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Optical Engineering • Open Access

Editorial and Forum
Author(s): R. Barry Johnson

Paper Abstract

For over a decade, passive thermography has been utilized as a reasearch aid in the study of human breast cancerl . In this case, a passive thermographic system basically performs a spatial measurement of the 'natural thermal emission (heat) of the human body. The measured flux is then converted into an electrical signal, displayed, and recorded (generally on photographic film). Al-t hough passive thermography has proved to be of great value in diagnostic', work, there are limitations on its effectiveness. One such limitation is the thermographic system's inability to yield significant information relating to the depth of various portions of the breast's vascular tree. Efforts are currently in progress to overcome this problem by utilizing a technique called active-passive thermography. Before discussing this technique, the question of why the depth information is of importance is addressed.

Paper Details

Date Published: 1 August 1974
PDF: 18 pages
Opt. Eng. 13(4) 134368 doi: 10.1117/12.7971723
Published in: Optical Engineering Volume 13, Issue 4
Show Author Affiliations
R. Barry Johnson, Teledyne Brown Engineering and University of Alabama in Huntsville (United States)

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