Title:
X-RAY IMAGE DETERMINATION METHOD FOR LIQUID CRYSTAL X-RAY DETECTOR
Document Type and Number:
WIPO Patent Application WO/2019/212145
Kind Code:
A1
Abstract:
The present invention relates to an X-ray image determination method for a liquid crystal X-ray detector, the method being capable of acquiring an accurate X-ray diagnostic image by correcting: a read beam transmittance difference created by the difference in field of view of each liquid crystal; and distortion in a pixel-specific detection read beam strength, caused by the read beam transmittance difference. The X-ray image determination method for a liquid crystal X-ray detector, according to the present invention, comprises: a first step of changing a bias voltage applied to an X-ray detection liquid crystal panel in a state in which no X-rays are emitted at the X-ray detection liquid crystal panel, and measuring a transmittance (hereinafter, referred to as "reference transmittance") of each pixel; a second step of separating electrons and holes in a photoconductor part by applying a separation voltage to the X-ray detection liquid crystal panel and emitting X-rays thereat; a third step of measuring a transmittance (hereinafter, referred to as "detection transmittance") of the each pixel by applying a measurement voltage to the X-ray detection liquid crystal panel; a fourth step of deriving a bias voltage of the pixel reference transmittance corresponding to the detection transmittance of each pixel; and a fifth step of determining an X-ray image of the each pixel by subtracting an amount that is as much as the measurement voltage from the bias voltage derived in the fourth step.
Inventors:
RHO BONG GYU (KR)
Application Number:
PCT/KR2019/003109
Publication Date:
November 07, 2019
Filing Date:
March 18, 2019
Export Citation:
Assignee:
SESIM LTD (KR)
International Classes:
G01T1/24; G02F1/135
Foreign References:
| KR20050043047A | 2005-05-11 | |||
| JP2004020442A | 2004-01-22 | |||
| KR20100010964A | 2010-02-03 | |||
| KR20060098453A | 2006-09-19 | |||
| KR20160047314A | 2016-05-02 |
Attorney, Agent or Firm:
DAWOOL PATENT AND LAW FIRM (KR)
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