Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance.

Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance. Research Abstract Details 

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Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance. Abstract Text:

J Wang,J E Gray,

OBJECTIVE: Viewing conditions can affect an observer's performance in object detection. Our objective was to determine the effect of viewbox masking and luminance on the detection of small low-contrast objects revealed by mammography. MATERIALS AND METHODS: Mammographic contrast-detail images having various film densities were viewed on masked and unmasked viewboxes. Similar images with fixed film contrast and density were viewed when luminance ranged from 250 to 8000 nits (1 nit = 1 cd/m2). RESULTS: Detection of small low-contrast objects was significantly easier using a masked viewbox with high luminance that using a regular unmasked viewbox. When a regular viewbox (approximately 3000 nits) was used masking had a more significant effect on films with high optical densities than on films with low optical densities. Brighter, masked viewboxes improved detection on films with higher optical densities. CONCLUSION: Better detection of small low-contrast objects results when mammographic images are masked and viewed on high-luminance viewboxes than when a regular unmasked viewbox is used.

Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance. Publishing Authors By Initials

J Wang,JE Gray,

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Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJR. American journal of roentgenology

VOLUME: 170

Page Numbers: 105-8

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ISSN: 0361-803X

DAY: 15

MONTH: Jan

YEAR: 1998

Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance. Information

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LANGUAGE: eng

NlmUniqueID: 7708173

Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance. Keywords Mesh Terms:

KEYWORDS: Phantoms, Imaging

MESH TERMS: standards

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Grant and Affiliation Information for Detection of small low-contrast objects in mammography: effect of viewbox masking and luminance.

AFFILIATION: Department of Radiology, University of Texas Southwestern Medical Center, Dallas 75235-9071, USA.

Country: UNITED STATES

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MEDLINETA: AJR Am J Roentgenol

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