Radiation detecting apparatus, radiographic image capturing system, and radiographic image capturing method

• US 8,080,802 B2
• Filed: 12/23/2009
• Issued: 12/20/2011
• Est. Priority Date: 12/26/2008
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Nishino, Naoyuki, Tsubota, Keiji, Ohta, Yasunori, Yoshida, Yutaka, Hattori, Masato
• Primary Examiner(s): Kim, Kiho
• Application Number:
  US12/654,565
• Publication Number:
  US 20110042574A1
• Time in Patent Office: 727 Days
• Field of Search: 25037001-37015, 378/98.8
• US Class Current: 250/370.08
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 6/4233 using matrix detectors
• CPC Class Codes: A61B 6/4291 the detector being combined with a grid or grating
• CPC Class Codes: A61B 6/4464 the source unit or the detector unit being mounted to ceiling
• CPC Class Codes: A61B 6/4488 Means for cooling A61B6/045 takes precedence
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices
• CPC Class Codes: A61B 6/56 Details of data transmission or power supply, e.g. use of slip rings
• CPC Class Codes: G01T 1/17 Circuit arrangements not adapted to a particular type of detector pulse-selection circuits H03K, G01R

Abstract

In a radiographic image capturing system, when a radiation detector is activated by a battery which is capable of being charged by a charging apparatus, charging of the battery by the charging apparatus is controlled based on whether image-capturing with respect to a subject is performed or not and/or whether delivery of the radiographic image information from the radiation detector is performed or not.

Claims

1. A radiation detecting apparatus comprising:

a radiation detector for detecting radiation applied from an external image capturing apparatus and transmitted through a subject and converting the detected radiation into radiographic image information;

a battery for activating the radiation detector;

a determining unit for determining whether image-capturing with respect to the subject is performed or not, and/or whether delivery of the radiographic image information from the radiation detector is performed or not; and

a charging controller for controlling charging of the battery by an external charging apparatus based on a determination result by the determining unit.

2. A radiation detecting apparatus according to claim 1, wherein when the determining unit determines that the image-capturing with respect to the subject is being performed, the charging controller inhibits the charging apparatus from charging the battery, and/or when the determining unit determines that the delivery of the radiographic image information from the radiation detector is being performed, the charging controller limits the charging of the battery by the charging apparatus.

3. A radiation detecting apparatus according to claim 2, further comprising:

an A/D converter for performing an A/D conversion to convert the radiographic image information into digital radiographic image information; and

an image memory for storing the digital radiographic image information,

wherein the determining unit includes;

an end-of-A/D-conversion determining unit for determining whether the A/D conversion is finished or not; and

an end-of-information-delivery determining unit for determining whether any one of transfer of the radiographic image information from the A/D converter to the image memory, storage of the radiographic image information into the image memory and output of the radiographic image information from the image memory to external equipment is finished or not,

wherein when the end-of-A/D conversion determining unit determines that the A/D conversion is finished, the charging controller controls the charging apparatus to charge the battery at a first charging intensity, and

wherein when the end-of-information determining unit determines that any one of the transfer of the radiographic image information from the A/D converter to the image memory, the storage of the radiographic image information into the image memory and the output of the radiographic image information from the image memory to external equipment is finished, the charging controller controls the charging apparatus to charge the battery at a second charging intensity that is higher than the first charging intensity.

4. A radiation detecting apparatus according to claim 3, further comprising a signal transmitting/receiving unit for transmitting and receiving signals to and from external equipment,

wherein the charging controller generates a charging inhibition signal for inhibiting the charging apparatus from charging the battery in synchronization with application of the radiation to the subject, and the signal transmitting/receiving unit transmits the charging inhibition signal to external equipment.

5. A radiation detecting apparatus according to claim 4, further comprising a charging intensity switching unit for switching a charging intensity of the battery to the first charging intensity or the second charging intensity,

wherein when the end-of-A/D-conversion determining unit determines that the A/D conversion is finished, the charging controller generates a charging permission signal for permitting the charging apparatus to charge the battery,

wherein when the charging controller determines charging of the battery at the first charging intensity, the charging intensity switching unit generates a first charging control signal for controlling the charging apparatus to charge the battery at the first charging intensity, and when the charging controller determines charging of the battery at the second charging intensity, the charging intensity switching unit generates a second charging control signal for controlling the charging apparatus to charge the battery at the second charging intensity, and

wherein the signal transmitting/receiving unit transmits the charging permission signal and the first charging control signal or the second charging control signal, to external equipment.

6. A radiation detecting apparatus according to claim 4, further comprising a charging intensity switching unit for switching a charging intensity of the battery to the first charging intensity or the second charging intensity,

wherein when the end-of-A/D-conversion determining unit determines that the A/D conversion is finished, the charging controller generates a charging permission signal for permitting the charging apparatus to charge the battery,

wherein when the charging controller determines charging of the battery at the first charging intensity, the charging intensity switching unit controls the end-of-A/D-conversion determining unit to output a determination result representing that the A/D conversion is finished, and when the charging controller determines charging of the battery at the second charging intensity, the charging intensity switching unit controls the end-of-information- delivery determining unit to output a determination result representing that any one of the transfer of the radiographic image information from the A/D converter to the image memory, the storage of the radiographic image information into the image memory and the output of the radiographic image information from the image memory to external equipment is finished, and

wherein the signal transmitting/receiving unit transmits the charging permission signal and the determination result output from the end-of-A/D-conversion determining unit or the determination result output from the end-of-information-delivery determining unit, to external equipment.

7. A radiation detecting apparatus according to claim 4, wherein when the image capturing apparatus transmits an image-capturing request signal indicating that application of the radiation to the subject is started, and the signal transmitting/receiving unit receives the image-capturing request signal, the charging controller generates charging inhibition signal.

8. A radiation detecting apparatus according to claim 7, further comprising an image capturing controller for controlling application of the radiation by the image capturing apparatus,

wherein when the signal transmitting/receiving unit receives the image-capturing request signal, the image capturing controller generates an image-capturing permission signal for permitting application of the radiation, and

wherein the signal transmitting/receiving unit transmits the image-capturing permission signal to external equipment.

9. A radiation detecting apparatus according to claim 4, wherein the signal transmitting/receiving unit comprises a wireless transceiver for transmitting and receiving signals to and from external equipment by way of wireless communication.

10. A radiation detecting apparatus according to claim 1, wherein the charging apparatus comprises a contactless power feeder, the radiation detecting apparatus further comprising a contactless power receiving for receiving electric power supplied contactlessly by the contactless power feeder and supplying the battery with the received electric power.

11. A radiographic image capturing system comprising:

an image capturing apparatus for applying radiation to a subject;

a radiation detecting apparatus including a radiation detector for detecting the radiation transmitted through the subject and converting the detected radiation into radiographic image information, and a battery for activating the radiation detector;

a determining unit for determining whether image-capturing with respect to the subject is performed or not, and/or whether delivery of the radiographic image information from the radiation detector is performed or not;

a charging apparatus which is capable of charging the battery;

a controller for controlling the image capturing apparatus, the radiation detecting apparatus and the charging apparatus; and

a charging controller for controlling charging of the battery by the charging apparatus based on a determination result by the determining unit.

12. A radiographic image capturing system according to claim 11, wherein when the determining unit determines that the image-capturing with respect to the subject is being performed, the charging controller inhibits the charging apparatus from charging the battery, and/or when the determining unit determines that the delivery of the radiographic image information from the radiation detector is being performed, the charging controller limits the charging of the battery by the charging apparatus.

13. A radiographic image capturing system according to claim 12, wherein the radiation detecting apparatus further includes:

an A/D converter for performing an A/D conversion to convert the radiographic image information into digital radiographic image information; and

an image memory for storing the digital radiographic image information,

wherein the determining unit includes;

an end-of-A/D-conversion determining unit for determining whether the A/D conversion is finished or not; and

an end-of-information-delivery determining unit determining whether any one of transfer of the radiographic image information from the A/D converter to the image memory, storage of the radiographic image information into the image memory and output of the radiographic image information from the image memory to external equipment is finished or not, and

wherein when the end-of-A/D-conversion determining unit determines that the A/D conversion is finished, the charging controller controls the charging apparatus to charge the battery at a first charging intensity, and

wherein when the end-of-information-delivery determining unit determines that any one of the transfer of the radiographic image information from the A/D converter to the image memory, the storage of the radiographic image information into the image memory and the output of the radiographic image information from the image memory to external equipment is finished, the charging controller controls the charging apparatus to charge the battery at a second charging intensity that is higher than the first charging intensity.

14. A radiographic image capturing system according to claim 13, wherein the charging controller generates a charging inhibition signal for inhibiting the charging apparatus from charging the battery in synchronization with application of the radiation to the subject.

15. A radiographic image capturing system according to claim 14, further comprising a charging intensity switching unit switching a charging intensity of the battery to the first charging intensity or the second charging intensity,

wherein when the end-of-A/D-conversion determining unit determines that the A/D conversion is finished, the charging controller generates a charging permission signal for permitting the charging apparatus to charge the battery, and

wherein when the charging controller determines charging of the battery at the first charging intensity, the charging intensity switching unit generates a first charging control signal for controlling the charging apparatus to charge the battery at the first charging intensity, and when the charging controller determines charging of the battery at the second charging intensity, the charging intensity switching unit generates a second charging control signal for controlling the charging apparatus to charge the battery at the second charging intensity.

16. A radiographic image capturing system according to claim 14, further comprising a charging intensity switching unit for switching a charging intensity of the battery to the first charging intensity or the second charging intensity,

wherein when the end-of-A/D-conversion determining unit determines that the A/D conversion is finished, the charging controller generates a charging permission signal for permitting the charging apparatus to charge the battery, and

wherein when the charging controller determines charging of the battery at the first charging intensity, the charging intensity switching unit controls the end-of-A/D-conversion determining unit to output a determination result representing that the A/D conversion is finished, and when the charging controller determines charging of the battery at the second charging intensity, the charging intensity switching unit controls the end-of-information-delivery determining unit to output a determination result representing that any one of the transfer of the radiographic image information from the A/D converter to the image memory, the storage of the radiographic image information into the image memory and the output of the radiographic image information from the image memory to external equipment is finished.

17. A radiographic image capturing system according to claim 14, wherein when the image capturing apparatus outputs an image-capturing request signal indicating that application of the radiation to the subject is started, the charging controller generates the charging inhibition signal.

18. A radiographic image capturing system according to claim 17, further comprising an image capturing controller for controlling application of the radiation by the image capturing apparatus,

wherein when the image capturing apparatus outputs the image-capturing request signal, the image capturing controller generates an image-capturing permission signal for permitting application of the radiation.

19. A radiographic image capturing system according to claim 18, wherein all of the end-of-A/D-conversion determining unit, the end-of-information-delivery determining unit, the charging controller, the charging intensity switching unit and the image capturing controller are provided in any one of the radiation detecting apparatus, the controller, the image capturing apparatus and the charging apparatus, or in each of at least two thereof, or

the end-of-A/D-conversion determining unit, the end-of-information-delivery determining unit, the charging controller, the charging intensity switching unit and the image capturing controller are provided in at least two of the radiation detecting apparatus, the controller, the image capturing apparatus and the charging apparatus.

20. A radiographic image capturing system according to claim 19, wherein a signal transmitting/receiving unit for receiving the image-capturing request signal and transmitting, to external equipment, the charging permission signal and the first charging control signal, the second charging control signal, the charging inhibition signal or the image-capturing permission signal, is further provided in the radiation detecting apparatus, the controller, the image capturing apparatus and/or the charging apparatus that have at least one of the end-of-A/D-conversion determining unit, the end-of-information-delivery determining unit, the charging controller, the charging intensity switching unit and the image capturing controller.

21. A radiographic image capturing system according to claim 20, wherein the signal transmitting/receiving unit comprises a wireless transceiver for transmitting and receiving signals to and from external equipment by way of wireless communication.

22. A radiographic image capturing system according to claim 11, wherein the charging apparatus comprises a contactless power feeder, and the radiation detecting apparatus further comprises a contactless power receiver for receiving electric power supplied contactlessly by the contactless power feeder and supplying the battery with the received electric power.

23. A method of capturing a radiographic image by applying radiation to a subject by an image capturing apparatus, detecting the radiation with a radiation detector of a radiation detecting apparatus, and converting the detected radiation into radiographic image information with the radiation detector, the method comprising the step of, when the radiation detector is activated by a battery which is capable of being charged by the charging apparatus, controlling charging of the battery by a charging apparatus based on whether image-capturing with respect to the subject is performed or not, and/or whether delivery of the radiographic image information from the radiation detector is performed or not.