AAPM/RSNA physics tutorial for residents - Digital mammography: An overview
AAPM/RSNA physics tutorial for residents - Digital mammography: An overview
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DOI：
10.1148/rg.246045102
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发表时间：
2004-11-01
期刊：
影响因子：
5.5
通讯作者：
Mahesh, M
中科院分区：
文献类型：
--
作者：
Mahesh, M
数字探测器技术的最新进展为全视野数字乳腺X射线摄影（FFDM）系统铺平了道路。这些系统的性能已经发展到取代屏幕胶片乳腺X射线摄影（SFM）系统变得现实的地步。尽管这两种技术之间存在一些共性，但在图像的记录、显示和存储方面存在根本差异。这些差异需要了解检测原理和数字图像的特性。在FFDM系统的开发中已经采用了几种方法：（a）使用闪烁体和电荷耦合器件（CCD）阵列进行狭缝扫描，（B）使用平板闪烁体和非晶硅二极管阵列，（c）使用平板非晶硒阵列，（d）使用光纤锥体和CCD阵列的平铺闪烁体，以及（e）光激励荧光板（计算机射线照相术）。尽管FFDM系统的初始成本高于SFM系统，但数字乳腺X射线摄影具有固有优势，例如宽动态范围、召回率降低、辐射剂量降低的可能性、患者吞吐量增加、后处理能力和数字采集。这些优点和快速发生的技术发展将有助于建立FFDM作为乳房评估的支柱。(C)RSNA，2004年。
Recent advances in digital detector technology have paved the way to full-field digital mammography (FFDM) systems. The performance of these systems has evolved to the point where replacement of screen-film mammography (SFM) systems is becoming realistic. Despite some commonality between the two techniques, there are fundamental differences in how images are recorded, displayed, and stored. These differences necessitate an understanding of the principles of detection and the characteristics of digital images. Several approaches have been taken in the development of FFDM systems: (a) slot scanning with a scintillator and a charge-coupled device (CCD) array, (b) a flat-panel scintillator and an amorphous silicon diode array, (c) a flat-panel amorphous selenium array, (d) a tiled scintillator with fiberoptic tapers and a CCD array, and (e) photostimulable phosphor plates (computed radiography). Although the initial cost of an FFDM system is high compared with that of an SFM system, digital mammography has inherent advantages, such as wide dynamic range, reduction in recall rates, potential for reduction in radiation dose, increased patient throughput, postprocessing capability, and digital acquisition. These advantages and the rapidly occurring technologic developments will help establish FFDM as a mainstay of breast evaluation. (C) RSNA, 2004.