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Proceedings Paper

Visual Perception Limits In Angiography
Author(s): Arthur E. Burgess; Keith Humphrey
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Paper Abstract

The results of two types of visual detection experiments will be presented and discussed. One set of experiments was done using single bar targets optically superimposed on a variety of backgrounds. The experiments were designed to determine functional relationships between the target contrast at the detection threshold and a number of variables. The variables included bar angular width, bar angular length, back-ground noise level, and viewing distance. The second set of experiments was done using radiographs of aluminum wires. The radiographs were produced using a conventional neuro-angiography system with a 0.38 mm focus. The aluminum wire diameter at the detection threshold was determined as a function of geometric magnification for several screen-film combinations. The aim of the experiments is to determine how to calculate visual signal-to-noise ratios. Some progress has been made toward this goal.

Paper Details

Date Published: 27 December 1977
PDF: 9 pages
Proc. SPIE 0127, Application of Optical Instrumentation in Medicine VI, (27 December 1977); doi: 10.1117/12.955915
Show Author Affiliations
Arthur E. Burgess, U.B.C. (Canada)
Keith Humphrey, U.B.C. (Canada)

Published in SPIE Proceedings Vol. 0127:
Application of Optical Instrumentation in Medicine VI
Joel E. Gray; William R. Hendee, Editor(s)

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