Share Email Print
cover

Proceedings Paper

Visual Perception Limits In Angiography
Author(s): Arthur E. Burgess; Keith Humphrey
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

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)

© SPIE. Terms of Use
Back to Top