Title:
RADIATION IMAGE DETECTION DEVICE, AND RADIATION IMAGE DETECTION DEVICE CONTROL METHOD
Document Type and Number:
Japanese Patent JP2014195480
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make it possible to appropriately capture a moving image at an X-ray image detection device that is incapable of communicating with an X-ray source.SOLUTION: An X-ray image detection device includes an FPD (Flat Panel Display) that detects an X-ray image by means of a plurality of pixels arranged in a matrix manner and accumulating therein signal charges corresponding to X-ray incident amounts. A control part of the X-ray image detection device creates an irradiation profile which expresses an X-ray irradiation amount per unit time, and a detection profile, which expresses an X-ray integrated detection amount per unit time, based on an output voltage Vout of a short circuit pixel of the FPD. The control part compares a threshold value Ts set from the irradiation profile and a period Tf in which the integrated detection amount specified from the detection profile becomes almost constant, with each other. When the period Tf is shorter than the threshold value Ts, the control part determines that a falling part of a previously irradiated X-ray having a pulse shape and a rising part of the next irradiated X-ray overlap each other and sets an operation mode of the FPD to a continuous irradiation corresponding mode.
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Inventors:
KITANO KOICHI
NISHINO NAOYUKI
OTA YASUYOSHI
IWAKIRI NAOTO
NAKATSUGAWA HARUYASU
NISHINO NAOYUKI
OTA YASUYOSHI
IWAKIRI NAOTO
NAKATSUGAWA HARUYASU
Application Number:
JP2011163479A
Publication Date:
October 16, 2014
Filing Date:
July 26, 2011
Export Citation:
Assignee:
FUJIFILM CORP
International Classes:
A61B6/00; G03B42/04
Attorney, Agent or Firm:
Kazunori Kobayashi