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Proceedings Paper

Ectomographic Filtering Applied To Tomographic Digital Subtraction Angiography
Author(s): B. C. Yih; D. N.Ghosh Roy; R. A. Kruger; S. P.Del Rio; R. L. Power
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Paper Abstract

A filtered backprojection reconstruction method suggested by Knutsson et al (1,2) has been applied to circular tomographic DSA (digital subtraction angiography). We have applied this reconstruction technique, termed "ectomography," to phantom data as well as preliminary in vivo studies employing a dog model. The properties of this technique are illustrated using limited angle (20 degree) circular tomography. Both eight and 16 projections were studied with and without subtraction. The infocus depth of field is markedly increased with this technique. This increased depth of field appears to be extremely useful for displaying dilute objects, such as opacified vasculature. However, both noise and reconstruction artefact are increased. The present status of this work and the future directions for reducing these artefacts are discussed.

Paper Details

Date Published: 11 June 1985
PDF: 7 pages
Proc. SPIE 0535, Application of Optical Instrumentation in Medicine XIII, (11 June 1985); doi: 10.1117/12.947241
Show Author Affiliations
B. C. Yih, University of Utah Medical Center (United States)
D. N.Ghosh Roy, University of Utah Medical Center (United States)
R. A. Kruger, University of Utah Medical Center (United States)
S. P.Del Rio, University of Utah Medical Center (United States)
R. L. Power, University of Utah Medical Center (United States)


Published in SPIE Proceedings Vol. 0535:
Application of Optical Instrumentation in Medicine XIII
Samuel J. Dwyer; Roger H. Schneider, Editor(s)

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