Geometrically correct 3-D reconstruction of intravascular ultrasound images by fusion with biplane angiography-methods and validation

In the rapidly evolving field of intravascular ultrasound (IVUS), the assessment of vessel morphology still lacks a geometrically correct three-dimensional (3-D) reconstruction. The IVUS frames are usually stacked up to form a straight vessel, neglecting curvature and the axial twisting of the cathe...

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Bibliographic Details
Published in:IEEE transactions on medical imaging 1999-08, Vol.18 (8), p.686-699
Main Authors: Wahle, A., Prause, G.P.M., DeJong, S.C., Sonka, M.
Format: Article
Language:English
Subjects:
Algorithms
Angiography
Animals
Approximation theory
Biological and medical sciences
Blood vessels
Cardiovascular system
Catheters
Computer Simulation
Coronary Angiography
Coronary Vessels - diagnostic imaging
Image Processing, Computer-Assisted
Image reconstruction
Image segmentation
Imaging phantoms
In Vitro Techniques
Information geometry
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Morphology
Swine
Three dimensional displays
Ultrasonic imaging
Ultrasonic investigative techniques
Ultrasonography, Interventional
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Summary:In the rapidly evolving field of intravascular ultrasound (IVUS), the assessment of vessel morphology still lacks a geometrically correct three-dimensional (3-D) reconstruction. The IVUS frames are usually stacked up to form a straight vessel, neglecting curvature and the axial twisting of the catheter during the pullback. The authors' method combines the information about vessel cross sections obtained from IVUS with the information about the vessel geometry derived from biplane angiography. First, the catheter path is reconstructed from its biplane projections, resulting in a spatial model. The locations of the IVUS frames are determined and their orientations relative to each other are calculated using a discrete approximation of the Frenet-Serret formulas known from differential geometry. The absolute orientation of the frame set is established, utilizing the imaging catheter itself as an artificial landmark. The IVUS images are segmented, using the authors' previously developed algorithm. The fusion approach has been extensively validated in computer simulations, phantoms, and cadaveric pig hearts.
ISSN:0278-0062
1558-254X
DOI:10.1109/42.796282