| Enhanced displays of medical images: evaluation of the effectiveness of color, motion, and contour for detecting and localizing liver lesions. | |
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MedLine Citation:
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PMID: 9419635 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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RATIONALE AND OBJECTIVES: Many perceptual studies have shown that the detection of large, low-contrast targets is better either in color or in contrast-reversing presentations than in standard gray scale. We determined the value of several new display techniques for viewing liver computed tomography (CT) scans. METHODS: Eight observers (four radiologists and four nonradiologists) viewed sets of 100 liver CT images (50 with lesions and 50 without) under five display conditions on a Macintosh computer: (1) color (equiluminant color contrast); (2) color-luminance (combined luminance and chromatic contrast); (3) flicker (luminance contrast that reversed polarity at 2 Hz); (4) contour (shaded intensity mapping); and (5) control (conventional gray scale). Receiver operating characteristics (ROC) techniques were used for analysis. RESULTS: The measured ROC curve areas for the different viewing conditions were as follows: control = 0.77 +/- 0.01 (mean +/- standard error of the mean); color = 0.78 +/- 0.01; color-luminance = 0.82 +/- 0.01; flicker = 0.78 +/- 0.01; and contour = 0.76 +/- 0.01. The percentage of lesions correctly located ranged from 0.82 (color-luminance) to 0.75 (flicker). Performance under the color-luminance condition was significantly better than in the control condition (p = .01), whereas the other experimental conditions were not significantly different from the control condition (p > .21). CONCLUSION: The use of mixed color and luminance displays may have perceptual advantages for radiologists and can improve performance over that of gray-scale viewing. |
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Authors:
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S E Seltzer; P Cavanagh; P F Judy; R G Swensson; L Scarff; W Monsky |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Academic radiology Volume: 2 ISSN: 1076-6332 ISO Abbreviation: Acad Radiol Publication Date: 1995 Sep |
Date Detail:
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Created Date: 1998-02-06 Completed Date: 1998-02-06 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 9440159 Medline TA: Acad Radiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 748-55 Citation Subset: IM |
Affiliation:
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Department of Radiology, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Color Humans Image Enhancement / methods* Liver / radiography* Liver Diseases / radiography Motion Observer Variation ROC Curve Tomography, X-Ray Computed / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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