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Proceedings Paper

Slot scanning versus antiscatter grid in digital mammography: comparison of low-contrast performance using contrast-detail measurement
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Paper Abstract

Slot scanning imaging techniques allow for effective scatter rejection without attenuating primary x-rays. The use of these techniques should generate better image quality for the same mean glandular dose (MGD) or a similar image quality for a lower MGD as compared to imaging techniques using an anti-scatter grid. In this study, we compared a slot scanning digital mammography system (SenoScan, Fisher Imaging Systems, Denver, CO) to a full-field digital mammography (FFDM) system used in conjunction with a 5:1 anti-scatter grid (SenoGraphe 2000D, General Electric Medical Systems, Milwaukee, WI). Images of a contrast-detail phantom (University Hospital Nijmegen, The Netherlands) were reviewed to measure the contrast-detail curves for both systems. These curves were measured at 100%, 71%, 49% and 33% of the reference mean glandular dose (MGD), as determined by photo-timing, for the Fisher system and 100% for the GE system. Soft-copy reading was performed on review workstations provided by the manufacturers. The correct observation ratios (CORs) were also computed and used to compare the performance of the two systems. The results showed that, based on the contrast-detail curves, the performance of the Fisher images, acquired at 100% and 71% of the reference MGD, was comparable to the GE images at 100% of the reference MGD. The CORs for Fisher images were 0.463 and 0.444 at 100% and 71% of the reference MGD, respectively, compared to 0.453 for the GE images at 100% of the reference MGD.

Paper Details

Date Published: 6 May 2004
PDF: 9 pages
Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); doi: 10.1117/12.535986
Show Author Affiliations
Chao-Jen Lai, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
Chris C. Shaw, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
William Geiser, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
Srinivas Cheenu Kappadath, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
Xinming Liu, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
TianPeng Wang, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
Shu-Ju Tu, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)
Mustafa C. Altunbas, Univ. of Texas M. D. Anderson Cancer Ctr. (United States)


Published in SPIE Proceedings Vol. 5368:
Medical Imaging 2004: Physics of Medical Imaging
Martin J. Yaffe; Michael J. Flynn, Editor(s)

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