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Proceedings Paper

Performance Evaluation And Quality Assurance Of Digital Fluoroscopy Imaging Systems
Author(s): Theodore L. Houk; Seong K. Mun
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Paper Abstract

We have developed a simple technique to evaluate and monitor the performance of digital fluoroscopy imaging systems in a clinical environment. We use a specially designed phantom based on a commercially available fluoroscopic stepwedge, placed on top of a water bath which is interlaced with rubber tubing simulating arteries. Noise characteristics are found by taking a difference image of the stationary phantom. Dynamic range and fidelity of logarithmic amplification in the presence of scattered radiation and veiling glare are measured by analyzing the image of the phantom and the difference image of the stepwedge in two different positions. Vascular contrast resolution is measured by taking the difference image of diluted contrast agent injected into the tubing. Further analysis of the obtained images can reveal possible instability in the video scanning pattern or the image intensifier electronic lens system and line-to-line sweep circuit clamping instability of a TV camera. We have used this technique on a routine basis for quality assurance of a digital system for some time.

Paper Details

Date Published: 13 December 1983
PDF: 4 pages
Proc. SPIE 0419, Application of Optical Instrumentation in Medicine XI, (13 December 1983); doi: 10.1117/12.936016
Show Author Affiliations
Theodore L. Houk, ADAC Laboratories (United States)
Seong K. Mun, Georgetown University Hospital (United States)

Published in SPIE Proceedings Vol. 0419:
Application of Optical Instrumentation in Medicine XI
Gary D. Fullerton, Editor(s)

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