Radiation detecting cassette and radiation image capturing system

• US 7,772,560 B2
• Filed: 08/18/2008
• Issued: 08/10/2010
• Est. Priority Date: 08/16/2007
• Status: Expired due to Fees

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Kito, Eiichi, Yoshimi, Takuya, Tanabe, Tsuyoshi, Ohta, Yasunori
• Primary Examiner(s): Hannaher; Constantine
• Application Number:
  US12/222,848
• Publication Number:
  US 20090046828A1
• Time in Patent Office: 722 Days
• Field of Search: 250/370.09
• US Class Current: 250/370.09
• CPC Class Codes: A61B 2560/0209 adapted for power saving
• CPC Class Codes: A61B 6/00 Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting, G01T1/161; apparatus for taking X-ray photographs G03B42/02
• CPC Class Codes: A61B 6/4283 characterised by a detector unit being housed in a cassette
• CPC Class Codes: A61B 6/4291 the detector being combined with a grid or grating
• CPC Class Codes: A61B 6/4423 related to hygiene or sterilisation
• 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: A61B 6/563 involving image data transmission via a network

Abstract

A radiation detecting cassette and a radiation image capturing system. A radiation detecting cassette has a radiation detector for detecting a radiation having passed through a patient and converting the detected radiation into radiation image data, a transceiver for transmitting the radiation image data by way of wireless communications, a cassette controller for controlling the radiation detector and the transceiver, a power supply for energizing the radiation detector and the transceiver, and a remaining power supply power level detector for detecting a remaining power level RC [%] of the power supply. The cassette controller includes a data transmission and reception controller. The cassette controller stops transmitting the radiation image data by way of wireless communications and prioritizes the capturing of a radiation image when the detected remaining power level of the power supply is smaller than a predetermined threshold.

Claims

1. A radiation detecting cassette comprising:

a radiation conversion panel which detects a radiation having passed through a subject and converts the detected radiation into radiation image data;

a wireless communication unit which transmits said radiation image data by way of wireless communications;

a control unit which controls said radiation conversion panel and said wireless communication unit;

a power supply which energizes said radiation conversion panel and said wireless communication unit; and

a remaining power level detecting unit which detects a remaining power level of said power supply;

wherein said control unit controls said wireless communication unit to stop transmitting said radiation image data by way of wireless communications and continues capturing of a radiation image with said radiation conversion panel as a result of the detected remaining power level of said power supply being detected as smaller than a predetermined threshold.

2. A radiation detecting cassette according to claim 1, wherein said predetermined threshold is variable.

3. A radiation detecting cassette according to claim 1, further comprising a nonvolatile memory which stores said radiation image data,

wherein said control unit stores said radiation image data in said nonvolatile memory while stopping transmission of said radiation image data by way of wireless communications.

4. A radiation detecting cassette according to claim 1, further comprising a volatile memory which temporarily stores said radiation image data,

wherein said control unit temporarily stores said radiation image data in said volatile memory before transmitting said radiation image data by way of wireless communications.

5. A radiation detecting cassette according to claim 1, further comprising a wired communication unit which transmits said radiation image data by way of wired communications,

wherein said control unit controls said wired communication unit to transmit said radiation image data to an external device when the remaining power level of said power supply is smaller than said predetermined threshold and greater than a second threshold which is lower than said predetermined threshold.

6. A radiation detecting cassette according to claim 1, further comprising a remaining power level display unit which displays the remaining power level of said power supply,

wherein said remaining power level display unit displays that the remaining power level of said power supply is nil when the remaining power level of said power supply drops to a provisional empty value which is indicative of a power level capable of acquiring radiation image data of at least one radiation image.

7. A radiation detecting cassette according to claim 6, wherein said control unit inhibits said power supply from supplying electric power to said radiation conversion panel when the remaining power level of said power supply drops to said provisional empty value, and permits said power supply to supply electric power to said radiation conversion panel when a power supply permission instruction is given from an external device.

8. A radiation image capturing system comprising:

a radiation detecting cassette comprising;

a radiation conversion panel which detects a radiation having passed through a subject and converts the detected radiation into radiation image data;

a wireless communication unit which transmits said radiation image data by way of wireless communications;

a control unit which controls said radiation conversion panel and said wireless communication unit;

a power supply which energizes said radiation conversion panel and said wireless communication unit;

a remaining power level detecting unit which detects a remaining power level of said power supply;

wherein said control unit controls said wireless communication unit to stop transmitting said radiation image data by way of wireless communications and continues capturing of a radiation image with said radiation conversion panel as a result of the detected remaining power level of said power supply being smaller than a predetermined threshold; and

a console which performs wireless communications with said radiation detecting cassette and controls said radiation detecting cassette;

wherein said radiation detecting cassette indicates the remaining power level of said power supply detected by said remaining power level detecting unit to said console;

said console instructs said radiation detecting cassette to stop transmitting said radiation image data by way of wireless communications and continue capturing of a radiation image with said radiation conversion panel as a result of the detected remaining power level of said power supply being smaller than said predetermined threshold; and

said control unit of said radiation detecting cassette stops transmitting said radiation image data by way of wireless communications and continues capturing of the radiation image when instructed by said console.

9. A radiation image capturing system according to claim 8, wherein said console includes remaining power level display unit which displays the remaining power level of said power supply;

and

wherein said remaining power level display unit displays that the remaining power level of said power supply is nil when the remaining power level of said power supply drops to a provisional empty value which is indicative of a power level capable of acquiring radiation image data of at least one radiation image.

10. A radiation image capturing system according to claim 9, wherein when the remaining power level of said power supply drops to the provisional empty value, said console transmits a power supply inhibition instruction to said control unit for inhibiting said power supply from supplying electric power to said radiation conversion panel, and said control unit inhibits said power supply from supplying electric power to said radiation conversion panel in response to said power supply inhibition instruction;

and

wherein when said console is instructed from an external device to supply electric power from said power supply to said radiation conversion panel, said console transmits a power supply permission instruction to said control unit for supplying electric power from said power supply to said radiation conversion panel, and said control unit permits said power supply to supply electric power to said radiation conversion panel in response to said power supply permission instruction.

11. A method of detecting radiation using a radiation detecting cassette, the method comprising:

detecting radiation which has passed through a subject and converting the detected radiation into radiation image data using a radiation conversion panel;

transmitting said radiation image data by way of wireless communications using a wireless communication unit;

energizing said radiation conversion panel and said wireless communication unit using a power supply;

detecting a remaining power level of said power supply; and

stopping the transmitting of said radiation image data by way of wireless communications and continuing capturing of a radiation image with said radiation conversion panel as a result of the detected remaining power level of said power supply being detected as smaller than a predetermined threshold.