Title:
DEVICE AND METHOD FOR DETECTING RADIATION
Document Type and Number:
Japanese Patent JP3839941
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To actualize a radiation detecting device which has small noise and small variance and can read a desired S/N signal out by adopting a method for reading in consideration of attenuation characteristics of a scintillator.
SOLUTION: A radiation detecting device having a scintillator 14, a photoelectric converting device having pixels S, and TFTs (T) for transfer has a means (shift register 102 in the Fig.) which transfers signals stored in pixels by turning on a starting TFT for transfer after a means (control circuit, CPU, and program memory in the Fig.) which is longer than a delay (n×τ1) (where τ1 is the time constant of fluorescent surface afterglow characteristics of the scintillator 14 and (n) is 1n (SN)) after irradiation with radiation stops so as to obtain a desired signal-to-noise S/N.
Inventors:
Itabashi Satoshi
Tadao Endo
Tadao Endo
Application Number:
JP32861897A
Publication Date:
November 01, 2006
Filing Date:
November 28, 1997
Export Citation:
Assignee:
Canon Inc
International Classes:
G01T1/20; A61B6/00; A61B6/03; G01J1/42; G01T1/00; G01T1/24; H04N5/32; (IPC1-7): G01T1/20; A61B6/03
Domestic Patent References:
| JP5237091A | ||||
| JP9140691A | ||||
| JP7502865A |
Attorney, Agent or Firm:
Jyohei Yamashita