Performance evaluation of a retrofit digital detector-based mammography system

被引：9
|
作者：
Marshall, Nicholas W. [1 ]
van Ongeval, Chantal [1 ]
Bosmans, Hilde [1 ]
机构：
[1] Univ Hosp Gasthuisberg, Dept Radiol, Herestr 49, B-3000 Leuven, Belgium
来源：
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS | 2016年 / 32卷 / 02期
关键词：
Mammography; Image quality; Detector characterization; IMAGE QUALITY MEASUREMENTS; BREAST SCREENING-PROGRAM; FILM MAMMOGRAPHY; NOISE; PART; OPTIMIZATION; PARAMETERS; VARIANCE; SOFTWARE; CONTRAST;
D O I：
10.1016/j.ejmp.2016.01.002
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
A retrofit flat panel detector was integrated with a GE DMR+ analog mammography system and characterized using detective quantum efficiency (DQE). Technical system performance was evaluated using the European Guidelines protocol, followed by a limited evaluation of clinical image quality for 20 cases using image quality criteria in the European Guidelines. Optimal anode/filter selections were established using signal difference-to-noise ratio measurements. Only small differences in peak DQE were seen between the three anode/filter settings, with an average value of 0.53. For poly(methyl methacrylate) (PMMA) thicknesses above 60 mm, the Rh/Rh setting was the optimal anode/filter setting. The system required a mean glandular dose of 0.54 mGy at 30 kV Rh/Rh to reach the Acceptable gold thickness limit for 0.1 mm details. Imaging performance of the retrofit unit with the GE DMR+ is notably better than of powder based computed radiography systems and is comparable to current flat panel FFDM systems. (C) 2016 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：312 / 322
页数：11
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