WO2006030592A1 - 放射線検出器及び放射線画像撮影システム - Google Patents
放射線検出器及び放射線画像撮影システム Download PDFInfo
- Publication number
- WO2006030592A1 WO2006030592A1 PCT/JP2005/014837 JP2005014837W WO2006030592A1 WO 2006030592 A1 WO2006030592 A1 WO 2006030592A1 JP 2005014837 W JP2005014837 W JP 2005014837W WO 2006030592 A1 WO2006030592 A1 WO 2006030592A1
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- Prior art keywords
- battery
- radiation detector
- detached
- attached
- volatile memory
- Prior art date
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- 230000005855 radiation Effects 0.000 title claims abstract description 146
- 238000003384 imaging method Methods 0.000 title claims description 30
- 238000001514 detection method Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 72
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000002601 radiography Methods 0.000 description 7
- 238000001917 fluorescence detection Methods 0.000 description 5
- 238000013500 data storage Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2006—Measuring radiation intensity with scintillation detectors using a combination of a scintillator and photodetector which measures the means radiation intensity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
Definitions
- Radiographic imaging system Radiation detector and radiographic imaging system
- the present invention relates to a radiation detector and a radiographic imaging system applied when radiographing a subject.
- the radiation image of the subject is detected by detecting the intensity distribution of the radiation transmitted through the subject.
- the radiographic imaging system that obtains is widely known.
- a so-called “Flat Panel Detector” radiation detector which is a thin flat plate with a large number of photoelectric conversion elements arranged in a matrix, has been developed and used.
- the radiation image of the subject can be easily and quickly obtained by photoelectrically converting the radiation transmitted through the subject into an electrical signal and performing image processing on the electrical signal after the photoelectric conversion.
- the radiation detector is roughly classified into a "stationary type” that is stationary at a predetermined position as a part of the system and a portable type (portable type) that is portable.
- a battery battery
- Examples of such radiation detectors are disclosed in Patent Documents 1 to 3.
- the radiation detector (radiation detector force set 40) described in Patent Document 1 is a portable force set type radiation detector.
- This radiation detector has a built-in battery (power supply 44) that drives a photoelectric conversion element (solid-state photodetection element 31), etc., and can supply power without being connected to an external signal processing device or power supply via a cable.
- power supply 44 power supply 44
- photoelectric conversion element solid-state photodetection element 31
- it has a configuration in which the degree of freedom of the radiography location is increased (see paragraphs 0033 to 0038).
- the radiation detector (force set type radiation image detector 1) described in Patent Document 3 is also a portable force set type radiation detector that is carried around.
- This radiation detector has a display unit (charging state display means 8c) for displaying the charging state of the battery (16), and is used for checking the charging state of the battery. It can be confirmed visually (paragraph number 0102).
- the radiation detector (X-ray imaging apparatus) described in Patent Document 2 is a radiation detector that can be used both as a stationary type and a cassette type.
- the imaging part (basic imaging part 31) containing a photoelectric conversion element (36b), etc., and the power supply part (extension part 32) containing a battery (battery circuit 47) etc. are separated. It is configured.
- Patent Document 2 when a radiation detector is used as a stationary type, an imaging part is installed on a stand (71) alone and power is supplied via a cable (77) (paragraph numbers 0026 to 0029).
- the imaging region and the power supply region are integrated so that the power supply region force also supplies power to the imaging region (paragraph numbers 0016 to 0024).
- Patent Document 1 JP-A-7-140255
- Patent Document 2 Japanese Patent Laid-Open No. 2003-248060
- Patent Document 3 Japanese Unexamined Patent Publication No. 2003-172783
- the radiation detector described in Patent Document 1 is portable and can be charged while being installed in a cradle when charging the battery. Because it must be done, the detector itself cannot be used during the charging period.
- the radiation detector described in Patent Document 2 since the power supply part with the built-in battery is detachable from the imaging part, the detector itself cannot be used during the charging period.
- the imaging part power supply unit is removed during communication between the radiation detector and the external system control unit or during operation of the radiation detector, the communication and radiation detection described above will be interrupted.
- the power supply site ie, battery
- An object of the present invention is to provide a radiation detector capable of accurately performing battery charging / replacement work as necessary. Another object of the present invention is to accidentally replace the battery. It is providing the radiation detector which can prevent removing.
- a radiation detector according to a first invention is
- a discriminator for discriminating whether the battery can be attached or detached A discriminator for discriminating whether the battery can be attached or detached.
- the radiation detector according to the first invention is
- the determination unit determines that the battery cannot be attached or detached.
- the radiation detector according to the first invention comprises:
- the determination unit determines that the battery cannot be attached or detached.
- the radiation detector is
- Non-volatile memory
- a switch unit for instructing transfer of data from the volatile memory to the nonvolatile memory
- the determination unit determines that the battery cannot be attached or detached.
- the radiation detector according to the first invention is:
- Non-volatile memory
- the determination unit determines that the battery cannot be attached or detached.
- the radiation detector according to the first invention It is preferable to provide a display unit for displaying that the battery cannot be attached or detached based on the determination result of the determination unit.
- the radiation detector according to the first invention comprises:
- a voltage detector for detecting a voltage value of the battery
- a display unit for displaying contents according to the determination result of the determination unit and the detection result of the voltage detection unit;
- the radiation detector according to the first invention comprises:
- a lock mechanism that makes the battery undetachable in an activated state
- the opening mechanism is operated.
- the radiation detector is
- a reset unit for instructing release of the operation of the lock mechanism is further provided, and the operation of the lock mechanism is released upon receiving an operation of the reset unit.
- a radiation detector according to a first invention is
- a lock mechanism that makes the battery undetachable in an activated state
- the determination unit determines that the battery can be attached and detached, it is preferable that the operation of the lock mechanism is released.
- the radiation detector according to the first invention is:
- a lock mechanism that makes the battery undetachable in an activated state
- the lock mechanism operates by receiving power from the battery, and the operation of the lock mechanism is released as the voltage value of the battery decreases.
- a radiographic image capturing system includes:
- a radiographic imaging system comprising a radiation detector and a console that can communicate with each other,
- the radiation detector is
- a discriminator for discriminating whether the battery can be attached or detached A discriminator for discriminating whether the battery can be attached or detached.
- An interface unit that transmits the determination result of the determination unit as a signal to the console
- the console is a console.
- a display unit for displaying the discrimination result of the discrimination unit based on the received signal.
- the determination unit determines whether or not the battery can be attached / detached, the battery charging / replacement operation is appropriately performed as necessary by checking the determination result of the determination unit. In addition, the battery can be prevented from being accidentally removed.
- the display unit of the console displays the determination result of the determination unit of the radiation detector, the battery charging / replacement work is performed appropriately as necessary by checking the determination result. In addition, it is possible to prevent accidental removal of the battery.
- FIG. 1 is a diagram showing a schematic configuration of a radiographic imaging system.
- FIG. 2 is a perspective view showing a schematic configuration of a radiation detector.
- FIG. 3 is a perspective view showing a configuration of a lock mechanism.
- FIG. 4 is a block diagram showing a circuit configuration of the radiation image capturing system.
- FIG. 5 is a flowchart showing the main routine processing executed by the control unit of the radiation detector over time.
- FIG. 6 is a flowchart showing each process (initialization process) of a subroutine executed by the control unit of the radiation detector over time.
- FIG. 8 is a drawing showing a display form indicating that the battery has insufficient charge and that the battery can be attached and detached.
- FIG. 9 is a drawing showing a display form indicating that the battery has a sufficient remaining charge and that the battery can be attached and detached.
- FIG. 10 is a drawing showing a display form indicating that the battery has insufficient charge and the battery cannot be attached or detached.
- FIG. 11 is a drawing showing a display state indicating that the remaining charge of the battery is sufficient and that the battery cannot be attached or detached.
- FIG. 12 is a flowchart showing each process (image data related process) of a subroutine executed by the control unit of the radiation detector over time.
- FIG. 1 is a diagram showing a schematic configuration of a radiographic image capturing system 1.
- the radiographic imaging system 1 includes an imaging device 2 that performs radiation imaging of the subject M by irradiating the subject M with radiation, and a console 3 that generates a radiographic image of the subject M. Yes.
- the imaging device 2 is installed and used in a medical facility such as a clinic 'hospital'.
- the imaging device 2 has a radiation source 4 and emits radiation when a tube voltage is applied to the radiation source 4.
- An aperture device 5 for adjusting the radiation field is provided at the radiation outlet of the radiation source 4 so as to be openable and closable.
- a bed 6 on which the subject M is placed is provided below the radiation source 4 and in the radiation irradiation range.
- the bed 6 is provided with a radiation detector 10 for detecting the radiation dose transmitted through the subject M.
- the radiation detector 10 is a portable force set type radiation detector that is detachably arranged on the bed 6.
- the console 3 is a general-purpose computer and incorporates a control device 30 (see FIG. 4) that generates a radiation image of the subject M based on the detection result of the radiation detector 10.
- a connector 31 for communicating with the imaging device 2
- a display 32 as a display unit for displaying a radiographic image of the subject M
- the imaging information about the subject M and the radiation detector 10 are transmitted to the control device 30. It has a keyboard, Z mouse 33, etc.
- FIG. 2 is a perspective view showing a schematic configuration of the radiation detector 10 according to the present invention.
- the radiation detector 10 has a thin, rectangular parallelepiped casing 11, and the casing
- a part of the top plate of 11 becomes a grid 12 that absorbs and removes scattered components of radiation.
- a handle 13 is disposed on the side of the housing 11 so that the radiation detector 10 can be easily carried.
- a rectangular scintillator 14 that emits fluorescence with an intensity corresponding to the intensity of radiation is disposed inside the housing 11.
- Scintillator 14 is a fluorescence of GOS (Gd O S: Tb), Csl, etc.
- a flat plate-like fluorescence detection panel 15 for detecting fluorescence is disposed below or below the scintillator 14.
- a large number of photoelectric conversion elements that receive fluorescence and accumulate charges corresponding to the amount of received light are arranged in a matrix (lattice).
- a scanning driver 16 that sends a pulse to each photoelectric conversion element to scan and drive each photoelectric conversion element, and a signal driver 17 that reads the amount of charge accumulated in each photoelectric conversion element; Powered.
- control device 18 for controlling the operation of the scanning driver 16 and the signal driver 17 and other members, a battery 19 as a power supply source, and a nonvolatile memory 24 for storing various data. And volatile memory 57 (see Figure 4).
- the battery 19 is detachably attached (detached and attached) to the casing 11, and can be easily replaced with another battery 19.
- Both the nonvolatile memory 24 and the volatile memory 57 are supplied with power from the battery 19 and store various data.
- the non-volatile memory 24 is composed of a solid-state memory such as a flash memory. Even if the power supply is interrupted due to the replacement of the battery 19, the data stored before the replacement of the battery 19 can be stored as it is. ing.
- the volatile memory 57 is composed of DRAM (Dynamic Random Access Memory). If the power supply is interrupted due to the replacement of 9, the data stored before the replacement of the battery 19 is lost.
- the indicator 22 is composed of LED (Light Emitting Diode) power that lights in “green” or “red”.
- the indicator 22 changes its lighting color as appropriate depending on whether the battery 19 can be attached or detached. Specifically, when the battery 19 can be attached or detached, the indicator 22 lights green. When battery 19 cannot be attached or detached, it lights up in red.
- the lighting color of the indicator 22 may be other than green and red so long as it can be determined whether or not the battery 19 can be attached or detached.
- the indicator 22 may indicate only that the battery 19 can be attached or detached, or may indicate only that the battery 19 cannot be attached or detached. In this case, it can be expressed by “lit” and “flashing”, “lit” and “off”, or “flashing” and “off”.
- the housing 11 has a power button 52 that switches ON / OFF of the power supply of the radiation detector 10, a reset button 53 as a reset unit that resets the operation state of the radiation detector 10 to a start state, Data save button 55 as a switch to transfer data from the volatile memory 57 to the non-volatile memory 24, return button to return the operation state of the radiation detector 10 to the state before the battery 19 is attached / detached after the battery 19 is attached / detached 23 mag is arranged.
- FIG. 3 is a perspective view showing a configuration in the vicinity of the notch 19 of the radiation detector 10, mainly showing a lock mechanism for locking the notch 19.
- a rectangular opening 40 having a size into which the notch 19 can be inserted is formed at the corner of the housing 11 of the radiation detector 10.
- a lid 41 that can cover the opening 40 is connected to the lower portion of the opening 40 via a hinge (not shown), and the lid 41 can be opened and closed with respect to the opening 40.
- a lock mechanism 43 for restricting attachment / detachment of the battery 19 is disposed on the side of the opening 40 of the housing 11. [0040]
- the lock mechanism 43 is a claw-shaped member that uses an actuator (not shown) such as a solenoid as a power source, and can be shifted between a state protruding from the opening 40 and a state retracted into the housing 11. .
- the lock mechanism 43 protrudes into the opening 40 when the actuator is operated, and is pulled into the housing 11 when the operation of the actuator is released.
- the lock mechanism 43 protrudes while the battery 19 is stored and installed in the housing 11, the battery 19 is locked and cannot be attached or detached, and conversely, the lock mechanism 43 When the battery is retracted, the battery 19 is unlocked and the battery 19 can be detached.
- FIG. 4 is a block diagram showing a circuit configuration of the radiation image capturing system 1.
- the control device 18 includes a general-purpose CPU (Central Processing Unit), ROM (Read Unly Memory), RAM (Random Access Memory), etc. have.
- the CPU executes various processes according to the processing program recorded in the ROM while using the RAM and the volatile memory 57 as a work area.
- the control unit 25 includes an interface 51, a scan driver 16, a signal driver 17, a non-linear 21, an Ingege evening 22, 3 ⁇ 4 3 ⁇ 460, a button 52, a button 23, a reset button 53, and a data save button. 55, the non-volatile memory 24, the volatile memory 57, the lock mechanism 43, and the like are connected, and the control unit 25 controls each component based on the operation status of each of these members.
- RU 1 the control unit 25 controls each component based on the operation status of each of these members.
- the interface 51 transmits and receives signals to and from an external device connected to the connector 20.
- the control unit 25 can communicate with external devices such as the console 3 through the interface 51.
- the power supply unit 60 includes a battery 19, a voltage detection unit 62, and the like.
- the notch 19 is connected to the control device 18 and the members connected thereto, and power is supplied to each of these members!
- the voltage detection unit 62 detects the “voltage value V” of the battery 19 and transmits the detection result to the control unit 25.
- the control unit 25 receives the detection result of the voltage detection unit 62 and the remaining charge of the battery 19 You will be able to grasp the amount.
- the voltage value V of the battery 19 detected by the voltage detection unit 62 is the “threshold value”. Depending on whether it is higher than “V” and “reference value V (V>V;)”, display panel 2
- the voltage value V of the battery 19 corresponds to any of the following cases (i) to (iii).
- the control unit 25 transmits a control signal to the display panel 21, and the display panel 21 displays that the remaining charge of the battery 19 is sufficient. (See figures in Fig. 9 and Fig. 11).
- the control unit 25 transmits a control signal to the display panel 21 and the display panel 21 has an insufficient charge amount of the battery 19. Is displayed (see figure in Fig. 8, Fig. 10).
- the voltage value V of the battery 19 corresponds to the above (iii)
- the supply of voltage from the battery 19 to the display panel 21 is stopped, and the display panel 21 is maintained in a non-display state. And
- the operating state of the lock mechanism 43 is also switched in association with the voltage value V of the notch 19. That is, when the voltage value V of the notch 19 corresponds to the above (i) and (ii), the control unit 25 can transmit the control signal to the lock mechanism 43 to operate the lock mechanism 43. It is summer. When the voltage value V of the battery 19 corresponds to the above (iii), the supply of voltage from the battery 19 to the lock mechanism 43 is stopped, and the lock mechanism 43 is forced to be released. Become.
- control unit 25 functions as a determination unit that determines whether the notch 19 is detachable or not according to the operating state of each component. 19 is specified depending on whether it can be attached or detached (a flag is set to that effect), and the operation of the lock mechanism 43 and its release are controlled in accordance with that specification. (See Figure 5 to Figure 12).
- control unit 25 receives the pressing operation of the power button 52, the return button 23, the reset button 53, and the data storage button 55 by the photographer, and controls each configuration! Specifically, when the photographer presses the power button 52, the control unit 25 supplies power from the notch 19 to each member so that the radiation detector 10 is turned on, The power supply from the battery 19 to each member is stopped, and the radiation detector 10 is turned off.
- the control unit 25 transfers data from the nonvolatile memory 24 to the volatile memory 57.
- the control unit 25 executes an initialization process (see FIG. 6) for resetting the operation state of the radiation detector 10 to the start state.
- the lock mechanism 43 is also deactivated.
- the control unit 25 transfers data from the volatile memory 57 to the nonvolatile memory 24.
- the control device 18 of the control device 30 includes a control unit 35 composed of a general-purpose CPU (Centra 1 Processing Unit), ROM (Read Only Memory; RAM (Random Access Memory), etc.
- the control unit 35 expands the processing program recorded in the ROM into the RAM, and executes the processing program by the CPU.
- Each member such as the display 32, the keyboard Z mouse 33, the interface 34, and the like is connected to the control unit 35, and the control unit 35 controls each configuration based on the operation status of each of these members. It becomes.
- the interface 34 transmits and receives signals to and from an external device connected to the connector 20, and the control unit 35 can communicate with the external device such as the radiation detector 10 through the interface 34.
- the connector 20 of the radiation detector 10 and the connector 31 of the console 3 are connected by a member such as a cable.
- the detector 10 and the console 3 can communicate with each other.
- Communication between the radiation detector 10 and the console 3 may be wired as described above, but may be well-known wireless, or a well-known wired line via a network. Or even when it is wireless, especially when applying communication over a network
- the connection from the console 3 and the radiation detector 10 to the network is preferably realized by a wireless LAN (Local Aria Network), for example.
- FIG. 5 is a flowchart showing each process of the main routine executed by the control unit 25 of the radiation detector 10 over time
- FIGS. 6, 7, and 12 show processes of the subroutine in the main routine
- 6 is a flow chart showing (initialization processing, display Z lock control processing, and imaging processing) over time.
- step Sl When the photographer presses the power button 52 to turn on the radiation detector 10, or presses the reset button 53 while the radiation detector 10 is turned on, the radiographer 10
- the control unit 25 starts executing each process of the main routine of FIG. 5, and first executes “initialization process” (step Sl).
- the initialization process is a process of resetting the operating state of the radiation detector 10 at the time of radiography of the subject M to a starting state.
- the initialization process as shown in FIG. It is defined that the battery 19 can be attached and detached (step SA1), and then it is determined whether or not the voltage value V of the battery 19 is greater than or equal to the reference value V based on the detection result of the voltage detector 62.
- the control unit 25 defines that the remaining charge of the battery 19 is sufficient (step SA3). On the other hand, if it is determined that the voltage value V of the notch 19 is less than the reference value V, the control unit 25
- step SA4 It is defined that the remaining charge of the battery 19 is insufficient.
- control unit 25 determines whether or not there is data in the nonvolatile memory 24 (step SA5).
- control unit 2 As a result of the determination, if it is determined that there is data in the nonvolatile memory 24, the control unit 2
- step SA6 specifies that the battery 19 cannot be attached or detached.
- the control unit 25 defines that the battery 19 can be attached and detached (step SA7).
- Step SA8 When the attachment / detachment state of the battery 19 is specified, the control unit 25 executes "display Z lock control processing". (Step SA8).
- the display Z lock control process determines whether the battery 19 has a sufficient remaining charge (see steps SA3 and SA4) and whether or not the battery 19 can be attached or detached (see steps SA6 and SA7).
- the control unit 25 controls each display mode of the display panel 21 and the indicator 22 in accordance with the specified contents of the above, and controls the operation and release of the lock mechanism 43.
- control unit 25 determines whether or not the remaining charge of the battery 19 is sufficient (see steps SA3 and SA4) and whether or not the battery 19 can be attached or detached. Determine whether each provision is possible (see steps SA6 and SA7) (step SB1).
- control unit 25 executes the first to fourth display processes corresponding to the following four cases defined in the previous process.
- the control unit 25 executes the first display process (step SB2). Specifically, the control unit 25 transmits a control signal to the display panel 21 and the indicator 22, and as shown in FIG. 8, for example, a symbol indicating that the remaining charge of the battery 19 is insufficient is displayed on the display panel. 21. Display indicator 22 in green.
- the control unit 25 is executing a process in accordance with the prescribed content that the battery 19 is not fully charged but the battery 19 can be attached and detached. , “Replace battery 19” t, and the character to determine whether or not the battery 19 can be attached or detached and the voltage value V of the battery 19 is greater than or equal to the reference value V Detection result
- the display panel 21 also displays the contents corresponding to the results.
- control unit 25 executes the second display process (step SB3). Specifically, the control unit 25 transmits a control signal to the display panel 21 and the indicator 22, and as shown in FIG. 9, for example, the display panel 21 displays a symbol indicating that the remaining charge of the battery 19 is sufficient. And indicator 22 lights up green.
- the control unit 25 transmits a control signal to the display panel 21 and the indicator 22, and as shown in FIG. 9, for example, the display panel 21 displays a symbol indicating that the remaining charge of the battery 19 is sufficient. And indicator 22 lights up green.
- control unit 25 executes the third display process (step SB4). Specifically, the control unit 25 transmits a control signal to the display panel 21 and the indicator 22 to display a symbol indicating that the remaining charge of the battery 19 is insufficient, for example, as shown in FIG. Display on panel 21 and light indicator 22 in red.
- the control unit 25 performs a process in accordance with the prescribed content that the remaining charge of the battery 19 is insufficient and the battery 19 cannot be attached or detached. Replace the battery 19 after the indicator 22 turns green. "T, the character that determines whether the battery 1 9 can be attached or removed and the voltage value V of the battery 19
- the display panel 21 also displays the content corresponding to the detection result of whether the force is greater than or equal to the reference value V
- the control unit 25 executes the fourth display process (step SB5). Specifically, the control unit 25 transmits a control signal to the display panel 21 and the indicator 22, and as shown in FIG. 11, for example, as shown in FIG. 21. Display indicator 22 in red.
- the control unit 25 performs a process in accordance with the specified contents that the battery 19 has a sufficient remaining charge but the battery 19 cannot be attached or detached. , “Do not remove battery 19” t, the character that determines whether battery 19 can be attached or removed and the voltage value V of battery 19 is greater than or equal to reference value V Detection result
- the display panel 21 also displays the contents corresponding to the results.
- the display panel 21 displays whether the remaining charge of the battery 19 is sufficient or insufficient, the determination result related to the attachment / detachment of the battery 19, and the detection result related to the voltage value V of the battery 19.
- Each form of display on the display panel 21 corresponding to and may be expressed by symbols or characters other than the forms shown in FIGS.
- control unit 25 controls the operation and release of the lock mechanism 43 as described below in conjunction with the display process. To do It has become.
- the control unit 25 determines whether or not the lock mechanism 43 is currently operating (step SB6), If it is determined that the lock mechanism 43 is in operation, a control signal is transmitted to the lock mechanism 43 to release the operation of the lock mechanism 43 (step SB7). At this time, the lock mechanism 43 receives a control signal from the control unit 25 and shifts from a state in which the lock mechanism 43 protrudes into the opening 40 to a state in which the lock mechanism 43 is retracted into the housing 11. On the other hand, if it is determined that the lock mechanism 43 is not currently operating, the control unit 25 transmits a control signal to the lock mechanism 43 to maintain the state as it is. At this time, the lock mechanism 43 continues to maintain the state of being pulled into the housing 11 in response to the control signal of the control unit 25.
- the control unit 25 determines whether the lock mechanism 43 is currently operating or not (step SB8). If it is determined that the lock mechanism 43 is activated, a control signal is transmitted to the lock mechanism 43 to activate the lock mechanism 43 (step S B9). At this time, the lock mechanism 43 shifts to a state where the lock mechanism 43 protrudes into the state force opening 40 that has been pulled into the housing 11 in response to the control signal of the control unit 25. On the other hand, if it is determined that the lock mechanism 43 is currently operating, the control unit 25 transmits a control signal to the lock mechanism 43 to maintain the state as it is. At this time, the lock mechanism 43 continues to maintain the state of protruding to the opening 40 upon receiving a control signal from the control unit 25.
- control unit 25 transmits the determination result related to the attachment / detachment of the battery 19 and the detection result related to the voltage value V of the battery 19 from the interface 51 to the console 3 as a signal.
- 3 control unit 35 receives these discrimination results and detection results on interface 34 and displays these discrimination results and detection results on display 32. Please let me.
- step SA9 the control unit 25 returns to the initialization process, determines whether or not there is data in the nonvolatile memory 24 (step SA9), and there is data in the nonvolatile memory 24. Only when it is determined that the data is transferred from the nonvolatile memory 24 to the volatile memory 57 (step SA10), and then it is specified that the battery 19 can be attached and detached (step SA11) and specified in the previous processing.
- step SA12 The display Z lock control process (see Fig. 7) similar to the above is executed (step SA12).
- the control unit 25 determines whether or not there is data in the non-volatile memory 24 in a state where it is specified that the battery 19 cannot be attached / detached, and is volatile. The data is transferred from the memory 57 to the non-volatile memory 24. After the determination process and the data transfer process, it is specified that the battery 19 can be attached and detached, and the initialization process is completed. It is summer.
- control unit 25 returns to the process of the main routine of FIG. 5, and determines whether or not the data save button 55 has been pressed by the photographer (step S2).
- step S3 If it is determined that the data save button 55 has been pressed as a result of the determination, the control unit 25 defines that the battery 19 cannot be attached or detached (step S3), and the previous processing.
- the display Z lock control process (see Fig. 7) similar to the above is executed according to the specified contents (step S4).
- step S5 the control unit 25 transfers the data held in the volatile memory 57 from the volatile memory 57 to the nonvolatile memory 24 (step S5), and then the battery 19 It is specified that it can be attached and detached (step S6), and the display Z lock control process (see Fig. 7) similar to the above is executed according to the contents specified in the previous process (step S7). Return to the process.
- the control unit 25 stores the non-volatile data from the volatile memory 57 in a state that it is determined that the battery 19 cannot be attached or detached. In other words, when data is held in the volatile memory 57 or when data is transferred from the volatile memory 57 to the non-volatile memory 24, the It is determined that 19 cannot be attached or detached.
- the data in the volatile memory 57 is transferred to the nonvolatile memory 24. Even if the battery 19 is attached or detached after the battery 19 is replaced, the current operating state of the radiation detector 10 can be shifted to the operating state after the battery 19 is attached or detached. In addition, once the data in the volatile memory 57 is transferred to the nonvolatile memory 24, the data continues to be stored in the nonvolatile memory 24 regardless of the subsequent attachment / detachment of the battery 19. The battery 19 can be replaced without worrying about the loss.
- step S10 determines whether or not the photographer has pressed the return button 23.
- the control unit 25 defines that the battery 19 cannot be attached or detached (step S11), and is defined in the previous process.
- the display Z lock control process (see FIG. 7) similar to the above is executed according to the contents (step S12).
- the control unit 25 transfers the data stored in the nonvolatile memory 24 from the nonvolatile memory 24 to the volatile memory 57 (step S13), and then the battery 19 (Step S14), the display Z lock control process (see Fig. 7) similar to the above is executed according to the contents specified in the previous process (Step S15). Return to processing.
- the control unit 25 changes from the non-volatile memory 24 to the volatile memory 57 in a state that it is determined that the battery 19 cannot be attached or detached. In other words, when the data is transferred from the nonvolatile memory 24 to the volatile memory 57, it is determined that the battery 19 cannot be attached or detached.
- the radiation detector 10 can be used even if the battery 19 has been attached or detached before the battery 19 is replaced.
- the operating state before the battery 19 is attached / detached can be transferred to the operating state after the battery 19 is attached / detached, and the operating state of the radiation detector 10 is restored to the original operating state before the battery 19 is attached / detached. Can do.
- a sensor for detecting the attachment / detachment of the battery 19 is provided in the housing 11, and that the new battery 19 is attached to the radiation detector 10 as the battery 19 is attached / detached. If the photographer detects that the control unit 25 does not press the return button 23, the control unit 25 automatically executes the processes in steps S11 to S15, and the operation state of the radiation detector 10 is changed. Try to restore the previous working state.
- step S10 As a result of the determination in the processing of step S10 above, if it is determined that the return button 23 is pressed and the control unit 25 determines that the voltage of the battery 19 It is determined whether or not the value V is greater than or equal to the reference value V (step S20).
- the control unit 25 defines that the remaining charge of the battery 19 is sufficient (step S21), and receives the “start signal” from the console 3 indicating that the subject M starts radiography. It is determined whether or not (step S22).
- control unit 25 executes “image data related processing” (step S23), receives the start signal, and so on. If it is determined, the control unit 25 returns to the process of step S2.
- the image data generation processing is processing related to the image data of the subject M. Specifically, the image data of the subject M is generated by detecting the radiation transmitted through the subject M, and the generated image data is displayed on the console. To send to 3.
- control unit 25 defines that the battery 19 cannot be attached or detached (step SC1), and is similar to the above in accordance with the content defined in the previous processing.
- the Z lock control process (see Fig. 7) is executed (step SC2).
- the control unit 25 executes an image data generation process (step SC3). Specifically, the control unit 25 transmits a control signal to the scanning driver 16 and the signal driver 17 so that a pulse is transmitted from the scanning driver 16 to each photoelectric conversion element of the fluorescence detection panel 15, and each photoelectric conversion element
- the signal driver 17 reads the amount of charge accumulated in the signal as a signal, and “image data” is generated from the read result by the signal driver 17.
- the image data generation process is based on the premise that the subject M has already undergone radiography.
- the following operations are performed. That is, the imaging device 2 is connected to the subject M lying on the bed 6 from the radiation source 4. Radiation is irradiated through the diaphragm 5, and the radiation that has passed through the subject M enters the radiation detector 10. When radiation enters the radiation detector 10, the scattered radiation is absorbed and removed by the grid 12 of the radiation detector 10 and incident on the scintillator 14. The scintillator 14 is fluorescent with an intensity corresponding to the intensity of the radiation. To emit. When the scintillator 14 emits fluorescence, each photoelectric conversion element of the fluorescence detection panel 15 receives the fluorescence emitted by the scintillator 14 and accumulates electric charges according to the amount of received light.
- control unit 25 buffers the image data in the volatile memory 57 and temporarily stores the image data in the volatile memory 57 (step SC4). ).
- control unit 25 After buffering the image data in the volatile memory 57, the control unit 25 communicates with the control unit 35 of the console 3 whether or not the console 3 is allowed to receive the image data (step SC5).
- the communication result power is repeatedly determined whether or not the image data can be transmitted to the console 3 (step SC6).
- control unit 25 transmits the image data while transmitting the image data from the connector 20 to the console 3 (step SC7). It is repeatedly determined whether or not is completed (step SC8).
- control unit 25 When it is determined that the transmission of the image data is completed as a result of the determination, the control unit 25 initializes the volatile memory 57 (step SC9), and the data (image data stored in the volatile memory 57 is stored). ) Is transferred from the volatile memory 57 to the nonvolatile memory 24 (step SC10).
- the control unit 35 of the control device 30 performs image processing on the received image data to generate a radiation image, and the radiation image is used as the radiation of the subject M. Display on the display 32 as an image.
- step SC11 the control unit 25 defines that the battery 19 can be attached and detached (step SC11), and includes the one specified in the previous process. Accordingly, the display Z lock control process (see FIG. 7) similar to the above is executed (step SC12), and the process returns to the process of step S2 of the main routine of FIG.
- the control unit 25 cannot attach or detach the notch 19.
- the image data is transmitted to the console 3.
- the control unit 25 transfers data from the volatile memory 57 to the non-volatile memory 24 in a state in which it is determined that the battery 19 cannot be attached or detached. For example, when data is stored in the volatile memory 57 or when data is transferred from the volatile memory 57 to the non-volatile memory 24, it is determined that the battery 19 is not removable. Yes.
- step S20 As a result of the determination in step S20 above, the voltage value V of the notch 19 is less than the reference value V.
- step S24 If it is determined that it is 0, it is defined that the remaining charge of the battery 19 is insufficient (step S24), and the display Z lock control process similar to the above is performed according to the contents defined in the previous process (Fig. 7) (step S25), and the process returns to step S2.
- the volatile memory 57 and the non-volatile memory 24 perform processing such as data transfer to the other side, communication between the radiation detector 10 and the console 3, and the like.
- the control unit 25 of the radiation detector 10 executes the display Z lock control process in advance in a state that it is determined that the notch 19 cannot be attached or detached. Therefore, the photographer can easily determine whether the notch 19 can be attached or removed, and it is necessary to check whether the display panel 21 and indicator 22 are displayed and whether the lock mechanism 43 is activated.
- the battery 19 can be charged and replaced, and the battery 19 can be accidentally removed while the radiation detector 10 is operating or communicating.
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Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004-269951 | 2004-09-16 | ||
JP2004269951A JP2007333380A (ja) | 2004-09-16 | 2004-09-16 | 放射線検出器 |
JP2004-283702 | 2004-09-29 | ||
JP2004283702A JP2007333382A (ja) | 2004-09-29 | 2004-09-29 | 放射線検出器 |
Publications (1)
Publication Number | Publication Date |
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WO2006030592A1 true WO2006030592A1 (ja) | 2006-03-23 |
Family
ID=36032919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/014837 WO2006030592A1 (ja) | 2004-09-16 | 2005-08-12 | 放射線検出器及び放射線画像撮影システム |
Country Status (2)
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US (1) | US20060054822A1 (ja) |
WO (1) | WO2006030592A1 (ja) |
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JP2010214108A (ja) * | 2009-03-13 | 2010-09-30 | General Electric Co <Ge> | 着脱式バッテリを有するディジタル画像検出器 |
US20220256103A1 (en) * | 2019-06-12 | 2022-08-11 | Konica Minolta, Inc. | Control apparatus, radiographic imaging system, control method, and recording medium |
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