用于数字乳腺X线摄影X射线探测器的Y2O2S:Eu3+磷光体成像特性的研究。

An investigation of the imaging characteristics of the Y2O2S:Eu3+ phosphor for application in X-ray detectors of digital mammography.

作者信息

Cavouras D, Kandarakis I, Panayiotakis G S, Kanellopoulos E, Triantis D, Nomicos C D

机构信息

Department of Medical Instrumentation Technology Techological Educational Institution of Athens, Greece.

出版信息

Appl Radiat Isot. 1998 Aug;49(8):931-7. doi: 10.1016/s0969-8043(97)10108-7.

DOI:10.1016/s0969-8043(97)10108-7

PMID:9650263

Abstract

Y2O2S:Eu laboratory prepared screens were evaluated as mammographic image receptors and were compared to similarly prepared screens of Gd2O2S:Tb and Y2O2S:Tb phosphor materials, often used in X-ray imaging detectors. The evaluation was performed by determining the Modulation Transfer Function (MTF) and the spatial frequency dependent Detective Quantum Efficiency (DQE). Y2O2S:Eu exhibited higher DQE values at low frequencies and given its good spectral matching with digital optical detectors, it may be appropriate for use in X-ray digital mammography.

摘要

对实验室制备的Y2O2S:Eu增感屏作为乳腺摄影图像接收器进行了评估，并与同样制备的常用于X射线成像探测器的Gd2O2S:Tb和Y2O2S:Tb磷光体材料增感屏进行了比较。通过确定调制传递函数（MTF）和空间频率相关的探测量子效率（DQE）来进行评估。Y2O2S:Eu在低频下表现出更高的DQE值，并且鉴于其与数字光学探测器良好的光谱匹配性，它可能适用于X射线数字乳腺摄影。