Hybrid Subtraction In Digital Fluorography

G. S. Keyes; S. J. Riederer; B. F. Belanger; W. R. Brody

doi:10.1117/12.933804

29 December 1982 Hybrid Subtraction In Digital Fluorography

G. S. Keyes, S. J. Riederer, B. F. Belanger, W. R. Brody

Proceedings Volume 0347, Application of Optical Instrumentation in Medicine X; (1982) https://doi.org/10.1117/12.933804
Event: Application of Optical Instrumentation in Medicine X, 1982, New Orleans, United States

Abstract

Digital fluorography using temporal subtraction techniques has achieved excellent visualization of the vascular anatomy with intravenous injections of contrast medium. However, clinical studies have demonstrated that a major limitation to this method is patient motion. Movements such as swallowing, breathing, peristalsis, cardiac motion, and arterial pulsations cause artifacts in difference images which can reduce the diagnostic accuracy of the procedure. Many of these artifacts can be eliminated by the use of hybrid subtraction, a second-order technique which combines temporal and dual-energy subtraction. This procedure is described and compared to both temporal and dual energy subtraction methods in terms of data acquisition, iodine signal-to-noise ratios, dose, and x-ray tube loading. Images are shown to demonstrate the viability of this new technique.

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G. S. Keyes, S. J. Riederer, B. F. Belanger, and W. R. Brody "Hybrid Subtraction In Digital Fluorography", Proc. SPIE 0347, Application of Optical Instrumentation in Medicine X, (29 December 1982); https://doi.org/10.1117/12.933804

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