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Proceedings Paper

DICOM GSPS affects on contrast detection threshold
Author(s): David L. Leong; Tamara Miner Haygood; Gary J. Whitman; Selin Carkaci; Philip M. Tchou; Patrick C. Brennan
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Paper Abstract

While previous research has been done to determine the contrast detection threshold in medical images, we have found it difficult to translate the results into settings that can be used for the optimization of image quality. Since many of these papers were done before the widespread use of DICOM GSPS calibrated monitors, how the GSPS affects the detection threshold and whether the median background intensity shift has been minimized by GSPS remain unknown. We set out to determine if the median background affected the detection of a low-contrast object in a clustered lumpy background, which simulated a mammography image. Our results show that shifts in the median background intensity did not affect the detection performance. The contrast detection threshold appears close to +3 gray levels above the background.

Paper Details

Date Published: 24 February 2010
PDF: 9 pages
Proc. SPIE 7627, Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment, 762708 (24 February 2010); doi: 10.1117/12.845226
Show Author Affiliations
David L. Leong, Analogic Corp. (United States)
Univ. College Dublin (Ireland)
Tamara Miner Haygood, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Gary J. Whitman, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Selin Carkaci, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Philip M. Tchou, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Patrick C. Brennan, The Univ. of Sydney (Australia)


Published in SPIE Proceedings Vol. 7627:
Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment
David J. Manning; Craig K. Abbey, Editor(s)

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