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Proceedings Paper

Automated calculation of the axial orientation of intravascular ultrasound images by fusion with biplane angiography
Author(s): Andreas Wahle; Guido P. M. Prause; Clemens von Birgelen; Raimund Erbel; Milan Sonka
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Paper Abstract

This paper presents an approach for fusion of the two major cardiovascular imaging modalities, angiography and intravascular ultrasound (IVUS). While the path of the IVUS catheter, which follows the vessel curvature during pullback, is reconstructed from biplane angiograms, cross-sectional information about the vessel is derived from IVUS. However, after mapping of the IVUS frames into their correct 3-D locations along the catheter path, their orientations remain ambiguous. We determine the relative catheter twisting analytically, followed by a statistical method for finding the absolute orientation from the out-of-center position of the IVUS catheter. Our results as obtained from studies with cadaveric pig hearts and from three patients undergoing routine coronary intervention showed a good match of the absolute orientation by the algorithm. In all tested cases, the method determined the visually correct orientations of the IVUS frames. Local distortions were reliably identified and discarded.

Paper Details

Date Published: 21 May 1999
PDF: 11 pages
Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); doi: 10.1117/12.348504
Show Author Affiliations
Andreas Wahle, Univ. of Iowa (United States)
Guido P. M. Prause, Univ. of Iowa and Univ. of Bremen (Germany)
Clemens von Birgelen, Univ. Hospital Essen (Germany)
Raimund Erbel, Univ. Hospital Essen (Germany)
Milan Sonka, Univ. of Iowa (United States)

Published in SPIE Proceedings Vol. 3661:
Medical Imaging 1999: Image Processing
Kenneth M. Hanson, Editor(s)

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