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

Abstract:

: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 we 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), we have implemented a grid correction technique in our 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.

journal_name

IEEE Trans Med Imaging

authors

Dorsaz PA,Dorsaz L,Doriot PA

doi

10.1109/42.875203

subject

Has Abstract

pub_date

2000-07-01 00:00:00

pages

759-62

issue

7

eissn

0278-0062

issn

1558-254X

journal_volume

19

pub_type

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