Title:
RADIATION IMAGING DEVICE AND RADIATION IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/162024
Kind Code:
A1
Abstract:
Provided is a radiation imaging device comprising: a detection element that is disposed on a detection unit for acquiring a radiation image, and that detects incident radiation; and an operation unit for measuring the amount of incident radiation on the basis of a signal outputted from the detection element during emission of the radiation. The operation unit: determines, prior to the emission of the radiation, the number of times to sample an offset component of the detection element according to a signal value outputted by the detection element in one round of sampling during the emission of radiation, such signal value being estimated from imaging information that has been set; acquires an offset correction value from the offset component of the detection element sampled over the number of times that the sampling was performed; and measures the incident amount of radiation on the basis of the correction value attained by correcting the signal value outputted from the detection element according to the offset correction amount during emission of the radiation.
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Inventors:
MIURA RYOSUKE (JP)
FUJIYOSHI KENTARO (JP)
FUJIYOSHI KENTARO (JP)
Application Number:
PCT/JP2019/047889
Publication Date:
August 13, 2020
Filing Date:
December 06, 2019
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H04N5/32; A61B6/00; G01T1/17; H04N5/341; H04N5/361
Foreign References:
| JP2017046073A | 2017-03-02 | |||
| JP2010212741A | 2010-09-24 | |||
| JP2016214394A | 2016-12-22 | |||
| JP2012175396A | 2012-09-10 | |||
| JP2013098598A | 2013-05-20 |
Attorney, Agent or Firm:
OHTSUKA, Yasunori et al. (JP)
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