The effect of image distortion on 3-D reconstruction of coronary bypass grafts from angiographic views

Three-dimensional (3-D) reconstructions of coronary bypass grafts performed from X-ray angiographic images may become increasingly important for the investigation of damaging mechanical stresses imposed to these vessels by the cyclic movement of the heart. Contrary to what the authors had experience...

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Bibliographic Details
Published in:IEEE transactions on medical imaging 2000-07, Vol.19 (7), p.759-762
Main Authors: Dorsaz, P.-A., Dorsaz, L., Doriot, P.-A.
Format: Article
Language:English
Subjects:
Arteries
Biological and medical sciences
Coronary Angiography
Coronary Artery Bypass
Heart
Humans
Image intensifiers
Image Processing, Computer-Assisted
Image reconstruction
Imaging phantoms
Imaging, Three-Dimensional
Laboratories
Medical sciences
Phantoms, Imaging
Stress
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the heart
Three dimensional displays
Veins
X-ray imaging
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Summary:Three-dimensional (3-D) reconstructions of coronary bypass grafts performed from X-ray angiographic images may become increasingly important for the investigation of damaging mechanical stresses imposed to these vessels by the cyclic movement of the heart. Contrary to what the authors had experienced with coronary arteries, appreciable reconstruction artifacts frequently occur with grafts. In order to verify the hypothesis that those are caused by distortions present in the angiographic images (acquired with image intensifiers), the authors have implemented a grid correction technique in their 3-D reconstruction method and studied its efficiency with phantom experiments. In this article, the nature of the encountered artifacts and the way in which the dewarping correction eliminates them are illustrated by a phantom experiment and by the reconstruction of a real coronary bypass vein graft.
ISSN:0278-0062
1558-254X
DOI:10.1109/42.875203