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Proceedings Paper

Model based LV-reconstruction in bi-plane x-ray angiography
Author(s): Werner Backfrieder; Martin Carpella; Roland Swoboda; Clemens Steinwender M.D.; Christian Gabriel M.D.; Franz Leisch M.D.
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Paper Abstract

Interventional x-ray angiography is state of the art in diagnosis and therapy of severe diseases of the cardiovascular system. Diagnosis is based on contrast enhanced dynamic projection images of the left ventricle. A new model based algorithm for three dimensional reconstruction of the left ventricle from bi-planar angiograms was developed. Parametric super ellipses are deformed until their projection profiles optimally fit measured ventricular projections. Deformation is controlled by a simplex optimization procedure. A resulting optimized parameter set builds the initial guess for neighboring slices. A three dimensional surface model of the ventricle is built from stacked contours. The accuracy of the algorithm has been tested with mathematical phantom data and clinical data. Results show conformance with provided projection data and high convergence speed makes the algorithm useful for clinical application. Fully three dimensional reconstruction of the left ventricle has a high potential for improvements of clinical findings in interventional cardiology.

Paper Details

Date Published: 29 April 2005
PDF: 9 pages
Proc. SPIE 5747, Medical Imaging 2005: Image Processing, (29 April 2005); doi: 10.1117/12.594849
Show Author Affiliations
Werner Backfrieder, Univ. of Applied Sciences Upper Austria (Austria)
Martin Carpella, Univ. of Applied Sciences Upper Austria (Austria)
Roland Swoboda, Univ. of Applied Sciences Upper Austria (Austria)
Clemens Steinwender M.D., Linz General Hospital (Austria)
Christian Gabriel M.D., Red Cross Blood Lab. (Austria)
Franz Leisch M.D., Linz General Hospital (Austria)

Published in SPIE Proceedings Vol. 5747:
Medical Imaging 2005: Image Processing
J. Michael Fitzpatrick; Joseph M. Reinhardt, Editor(s)

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