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[Proximal anastomoses of aortocoronary bypasses. Evaluation with ECG-triggered single-slice computerized tomography]

A Von Smekal, M Lachat, Simon Wildermuth, G Khan, M Turina & B Marincek

abstract PURPOSE: Assessment of coronary artery bypass graft (CABG) patency with computed tomography methods has been demonstrated as an alternative to coronary angiography. The evaluation of the bypass anastomoses is still of limited success. Prospective ECG triggering of conventional CT scanners allows heart phase-triggered single-slice acquisition in the sub-second range. The goal of this study was to evaluate whether the use of ECG triggering can optimize the evaluation of proximal CABG anastomoses. MATERIALS AND METHODS: In ten patients after CABG surgery, ECG-triggered CT with thin (2 mm), contiguous slices was performed in the region of the proximal bypass anastomoses in the ascending aorta. The data evaluation was done on axial images and on reconstructed 2D and 3D data sets. RESULTS: The applied technique demonstrated good imaging quality, which allowed evaluation of the CABG anastomoses in all cases. Overall 18 CABG anastomoses could be visualized; 17 anastomoses could be assessed as normal, non-stenotic and patent. DISCUSSION: ECG-triggered thin-slice CT permits reliable assessment of proximal CABG anastomoses and expands the usage of CT in the evaluation of CABG.
   
citation Von Smekal A, Lachat M, Wildermuth S, Khan G, Turina M, Marincek B. [Proximal anastomoses of aortocoronary bypasses. Evaluation with ECG-triggered single-slice computerized tomography]. Der Radiologe 2000; 40:130-5.
   
type journal paper/review (Translation2::getLang(): unknown language "". Use Translation2::setLang() to set a default language.)
date of publishing 2-2000
journal title Der Radiologe (40/2)
ISSN print 0033-832X
pages 130-5
PubMed 10758626