PMID: 9556744Apr 29, 1998Paper

Why do anatomic backgrounds reduce lesion detectability?

Investigative Radiology
M P Eckstein, J S Whiting

Abstract

Developing metrics of medical image quality requires an understanding of how anatomic backgrounds reduce human visual detection performance. Visual psychophysics has shown that there are two distinct ways in which a complex background can degrade performance: (1) the presence of a deterministic high-contrast background, (2) variability in the background from location to location. The authors investigated how these two sources of performance degradation reduce human visual performance locating a lesion in anatomic backgrounds. Human performance localizing a disk-shaped lesion in one of four locations (four alternative forced choice) was measured for three background conditions. In the first condition the background was a uniform gray. In the second condition (the repeated background condition) an anatomic background was sampled on each trial and used as a background for the four possible lesion locations. In the third condition (the different background condition) four different anatomic backgrounds were sampled on each trial and used for the four possible lesion locations. Test images consisted of computer simulated lesions mathematically projected on digital x-ray coronary angiograms. For five levels of lesion contrast, visual...Continue Reading

References

Jun 1, 1976·AJR. American Journal of Roentgenology·H L Kundel, G Revesz
Aug 1, 1992·Vision Research·W S Geisler, D G Albrecht
Aug 1, 1992·Visual Neuroscience·D J Heeger
May 1, 1992·Journal of the Optical Society of America. A, Optics and Image Science·J P Rolland, H H Barrett
Jul 1, 1992·Physics in Medicine and Biology·M S Chesters
Apr 1, 1988·Journal of the Optical Society of America. A, Optics and Image Science·A E Burgess, B Colborne
Jan 1, 1985·Investigative Radiology·P T MaklerA Alavi
Sep 1, 1985·Journal of the Optical Society of America. A, Optics and Image Science·R A Smith, D J Swift
Oct 1, 1985·Journal of the Optical Society of America. A, Optics and Image Science·K J MyersG W Seeley
Nov 1, 1974·Investigative Radiology·G ReveszM A Graber
Dec 1, 1974·Vision Research·C F Stromeyer, S Klein
Nov 1, 1966·The Journal of Physiology·F W Campbell, J J Kulikowski
Aug 1, 1984·Journal of the Optical Society of America. A, Optics and Image Science·A Burgess, H Ghandeharian
Oct 2, 1981·Science·A E BurgessH B Barlow
Jan 1, 1981·Vision Research·J M Foley, G E Legge
Dec 1, 1980·Journal of the Optical Society of America·G E Legge, J M Foley
Jun 1, 1994·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·J M Foley
Apr 1, 1994·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A E Burgess
Nov 1, 1993·Proceedings of the National Academy of Sciences of the United States of America·H H BarrettK J Myers
Sep 1, 1996·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·M P Eckstein, J S Whiting
Sep 18, 1997·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·A B Watson, J A Solomon
Mar 1, 1995·Academic Radiology·M P Eckstein, J S Whiting

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Citations

Feb 24, 2001·Medical Physics·J J Heine, R P Velthuizen
Feb 6, 2004·Medical Physics·François O BochudMiguel P Eckstein

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