CCD-based detector for full-field digital mammography

被引：2

作者：

Stanton, M ^{[1
]}

Phillips, W ^{[1
]}

Stewart, A ^{[1
]}

Smilowitz, L ^{[1
]}

Williams, MB ^{[1
]}

Simoni, P ^{[1
]}

Ingersoll, C ^{[1
]}

McCauley, T ^{[1
]}

Qian, H ^{[1
]}

机构：

[1] Brandeis Univ, Rosenstiel Basic Med Sci Res Ctr, Waltham, MA 02454 USA

来源：

MEDICAL IMAGING 1999: PHYSICS OF MEDICAL IMAGING, PTS 1 AND 2 | 1999年 / 3659卷

关键词：

digital mammography; DQE; MTF; CCD detector; detector characterization;

D O I：

10.1117/12.349554

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We describe a 19 x 28 cm digital x-ray detector for use in clinical screening mammography. The detector design uses 6 CCD/taper modules tiled together to provide a full breast image without any image gaps at the tapers interfaces. We have attempted to limit the cost and mechanical complexity of the detector while maintaining a high DQE and a resolution cutoff of 10 lp/mm. The camera design employs a Gd2O2S phosphor x-ray converter, 3.3:1 demagnifying fiber optic tapers, and front-illuminated Thomson THX 7899 CCDs (2048 x 2048, 14 mu m pixels) coupled to the tapers with optical epoxy. The effective pixel size in the 4000 x 6000 pixel full image is 47 mu m. The signal for each pixel is digitized to 16-bits and the effective dynamic range is similar to 9000. Readout time for the 48Mbyte image is 8s. Each CCD is cooled to -3 degrees C by a thermoelectric (TE) cooling module.

引用

页码：740 / 748

页数：9

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