Radiation imaging system and radiation imaging device

Patent metadata

Field	Value
Publication number	US-9265476-B2
Application number	US-201313753210-A
Country	US
Kind code	B2
Filing date	Jan 29, 2013
Priority date	Aug 27, 2010
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A radiation imaging system that can continuously use sections of a radiation imaging device that has not been damaged and a radiation imaging device are provided. The radiation imaging system comprises: a radiation device that applies radiation; and the radiation imaging device with an imaging panel that captures images of the applied radiation. The radiation imaging device comprises: a failure cause detection unit that detects environmental noise or falls that cause failures in the radiation imaging device; a malfunction diagnostic unit that, in a case where a detected environmental noise value reaches a threshold value or in a case where a fall has been detected, diagnoses a malfunction in the radiation imaging device; and a function limiting unit that applies limits to the radiation imaging device functions that are used continuously, in accordance with the diagnosis results of the malfunction diagnostic unit.

First claim

The invention claimed is:

1. A diagnostic method for a radiographic image capturing system having a radiation device for applying radiation, and a radiographic image capturing apparatus including an image capturing panel for capturing an image from the applied radiation, the diagnostic method comprising:
a fault diagnosing step for performing a first fault diagnosing process to periodically diagnose with a fixed period the radiographic image capturing apparatus for a fault; and
a fault factor detecting step for detecting an external pressure or dropping of the radiographic image capturing apparatus;
wherein if the detected external pressure is equal to or greater than a threshold value or dropping of the radiographic image capturing apparatus is detected, in the fault diagnosing step, the fixed period is shortened and the first fault diagnosing process is periodically performed.

2. The diagnostic method according to claim 1 , wherein
the radiation device applies diagnostic radiation for diagnosing the radiographic image capturing apparatus for a fault in the image capturing panel when the first fault diagnosing process is performed; and
the first fault diagnosing process performed in the fault diagnosing step diagnoses an unimageable region in which an image cannot be captured from the radiation within an entire image capturing area of the image capturing panel, based on image data generated from the diagnostic radiation by an idle exposure process or a blank reading process.

3. The diagnostic method according to claim 2 , wherein if the detected external pressure is equal to or greater than the threshold value or dropping of the radiographic image capturing apparatus is detected, in the fault diagnosing step a second fault diagnosing process is performed subsequently periodically along with the first fault diagnosing process.

4. The diagnostic method according to claim 3 , wherein the second fault diagnosing process diagnoses a resolution of an image based on image data generated by the idle exposure process using a resolution test chart.

5. The diagnostic method according to claim 1 , further comprising:
an indicating step for indicating, to a user, the results of the first fault diagnosing process performed in the fault diagnosing step.

6. The diagnostic method according to claim 1 , wherein if the external pressure, an environmental humidity, an environmental temperature, or a change in the environmental temperature is equal to or greater than a predetermined value, or if the number of times that the external pressure, the environmental humidity, the environmental temperature, or a change in the environmental temperature is equal to or greater than the predetermined value exceeds a predetermined number, in the fault diagnosing step the first fault diagnosing process is periodically performed at shortened intervals.

7. The diagnostic method according to claim 1 , further comprising:
a function limiting step for limiting a function of the radiographic image capturing apparatus based on the results of the first fault diagnosing process performed in the fault diagnosing step.

8. The diagnostic method according to claim 1 , wherein the radiographic image capturing apparatus comprises a portable radiographic image capturing apparatus.

9. The diagnostic method according to claim 1 , wherein the radiation device inhibits image-capturing radiation from being applied while the first fault diagnosing process is being performed in the fault diagnosing step.

10. A diagnostic method for a radiographic image capturing apparatus including an image capturing panel for capturing an image from applied radiation, comprising:
a fault diagnosing step for performing a first fault diagnosing process to periodically diagnose with a fixed period the radiographic image capturing apparatus for a fault; and
a fault factor detecting step for detecting an external force or dropping of the radiographic image capturing apparatus;
wherein in the fault diagnosing step, the fixed period is shortened and the first fault diagnosing process is periodically performed if the detected external force is equal to or greater than a threshold value or dropping is detected.

11. The diagnostic method according to claim 1 , wherein if the detected external pressure is equal to or greater than a threshold value or dropping of the radiographic image capturing apparatus is detected, in the fault diagnosing step, the first fault diagnosing process is performed, and the fixed period is shortened and the first fault diagnosing process is performed periodically.

12. The diagnostic method according to claim 10 , wherein in the fault diagnosing step, the first fault diagnosing process is performed, and the fixed period is shortened and the first fault diagnosing process is periodically performed if the detected external force is equal to or greater than a threshold value or dropping is detected.

Assignees

• Fujifilm Corp

Inventors

• Iwakiri Naoto
• Nishino Naoyuki
• Ohta Yasunori
• Nakatsugawa Haruyasu

Classifications

• A61B6/4233

  using matrix detectors · CPC title

• A61B6/586 Primary

  Detection of faults or malfunction of the device · CPC title

• A61B6/54

  Control of apparatus or devices for radiation diagnosis · CPC title

• A61B6/4283

  characterised by a detector unit being housed in a cassette · CPC title

• A61B6/56

  Details of data transmission or power supply, e.g. use of slip rings · CPC title