Radiation detector, method of manufacturing radiation detector, and radiographic image capturing apparatus incorporating radiation detector

Patent metadata

Field	Value
Publication number	US-8946644-B2
Application number	US-201113306502-A
Country	US
Kind code	B2
Filing date	Nov 29, 2011
Priority date	Dec 20, 2010
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

A radiographic image capturing apparatus includes a housing and a radiation detector accommodated in the housing. The radiation detector includes a scintillator for converting radiation into visible light and photodiodes for converting the visible light into electric charges. If it is assumed that a temperature-dependent rate of change in sensitivity of the scintillator with respect to the radiation is represented by A [%/K] and a temperature-dependent rate of change in sensitivity of the photodiodes with respect to visible light is represented by B [%/K], a scintillator and photodiodes are selected having temperature-dependent rates of change A and B that satisfy the following inequality (1):

−0.35 [%/ K]<A+B<0.35 [%/ K]   (1).

First claim

What is claimed is:

1. A radiation detector comprising a scintillator for converting radiation into visible light and photodiodes for converting the visible light into electric charges, wherein:
if it is assumed that a temperature-dependent rate of change in sensitivity of the scintillator with respect to the radiation is represented by A [%/K] and a temperature-dependent rate of change in sensitivity of the photodiodes with respect to visible light is represented by B [%/K], the…

Assignees

• Nariyuki Fumito
• Agano Toshitaka
• Ohta Yasunori
• Nakatsugawa Haruyasu
• Fujifilm Corp

Inventors

• Nariyuki Fumito
• Agano Toshitaka
• Ohta Yasunori
• Nakatsugawa Haruyasu

Classifications

• G01T1/2018 Primary

  Physics · mapped topic

• A61B6/4233

  Human Necessities · mapped topic

• Y10T29/49004

  Cross-Sectional Technologies · mapped topic