Visual Perception Limits In Angiography

Arthur E. Burgess; Keith Humphrey

doi:10.1117/12.955915

27 December 1977 Visual Perception Limits In Angiography

Arthur E. Burgess, Keith Humphrey

Proceedings Volume 0127, Application of Optical Instrumentation in Medicine VI; (1977) https://doi.org/10.1117/12.955915
Event: Application of Optical Instrumentation in Medicine VI, 1977, Boston, United States

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.

Citation Download Citation

Arthur E. Burgess and Keith Humphrey "Visual Perception Limits In Angiography", Proc. SPIE 0127, Application of Optical Instrumentation in Medicine VI, (27 December 1977); https://doi.org/10.1117/12.955915

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