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The variation in user drawn outlines on digital images: Effects on quantitative autoradiography
Journal article   Peer reviewed

The variation in user drawn outlines on digital images: Effects on quantitative autoradiography

James L. Eilbert, C.R. Gallistel and Donald L. McEachron
Computerized medical imaging and graphics, v 14(5), pp 331-339
1990
PMID: 2224831

Abstract

2-Deoxyglucose Autoradiography Brain Densitometry Image processing Outlining
Variation in user outlines drawn to delineate neural regions is the only source of error added to autoradiographic images after the images have been digitized. By analyzing data compiled from many outlines drawn by several different investigators, it was demonstrated that this variation constitutes a major source of error affecting quantitative autoradiography. Both the gray level variation and average within a region, as well as the specific pixels included in an outline, were affected. However, using the intersection of multiple outlining attempts surrounding any given region and a consistent set of outlining criteria, it was possible to delineate a region which remained consistent from user to user. A technique for automating the consistent outlining process is discussed.

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Web of Science research areas
Engineering, Biomedical
Radiology, Nuclear Medicine & Medical Imaging
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