Automated calculation of the axial orientation of intravascular ultrasound images by fusion with biplane angiography

Andreas Wahle* (Corresponding Author), Guido P M Prause, Clemens von Birgelen, Raimund Erbel, Milan Sonka

*Corresponding author for this work

Research output: Contribution to journalConference articleAcademicpeer-review

8 Citations (Scopus)
17 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)1094-1104
Number of pages11
JournalProceedings of SPIE - the international society for optical engineering
Volume3661
Issue numberII
DOIs
Publication statusPublished - 1 Jan 1999
Externally publishedYes
Event1999 Medical Imaging - Image Processing - San Diego, United States
Duration: 20 Feb 199926 Feb 1999

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