Clinical utility of computed tomography and magnetic resonance techniques for noninvasive coronary angiography

Optimal ECG Trigger Point in Electron-Beam CT Studies: Three Methods for Minimizing Motion Artifacts

Computed tomography (CT) has become a standard test for many cardiovascular conditions (eg, aortic dissection and pulmonary embolism), and it has great potential in assessing other common diseases, including coronary artery disease. We review the principles of CT and its uses in cardiovascular medicine.

https://www.ccjm.org/content/ccjom/72/2/127.full.pdf

CT of the heart: principles, advances, clinical uses.

Effects of Window and Threshold Levels on the Accuracy of Three-Dimensional Rendering Techniques in Coronary Artery Electron-Beam CT Angiography

OBJECTIVE To establish and evaluate two protocols for the noninvasive visualization and assessment of coronary artery bypass graft (CABG) patency on electron beam tomography (EBT). METHODS Two hundred and fourteen consecutive patients who underwent coronary artery bypass graft surgery were scanned using both EBT angiography with 3-dimensional reconstruction and EBT flow study with time-density-curve analysis. RESULTS There were 589 CABGs evaluated in this study (10 grafts were excluded because of artifacts). Among them, 133 (98.5%) of 135 arterial grafts were patent, and 345 (77.7%) of 444 saphenous-vein grafts were patent. Within 5 years or between 5 and 10 years after operation, arterial graft patency exceeded venous graft patency (P < 0.001). Three-dimensional EBT angiography achieved higher sensitivity, specificity and accuracy (97.7%, 94.1% and 96.7%, respectively) than did EBT flow study (88.4%, 82.4% and 85.2%, respectively) for evaluating occlusion or patency of CABG. The intra-graft flow of patent arterial and venous grafts were 4.9 +/- 2.2 ml.min-1.g-1 and 6.9 +/- 2.8 ml.min-1.g-1, respectively (P < 0.001). CONCLUSION The combination of EBT three-dimensional reconstruction and flow study can be more effective in the assessment of CABG anatomy and quantification of patent CABG blood flow.

Evaluation of coronary artery bypass graft patency using three-dimensional reconstruction and flow study of electron beam tomography.

Electron-beam CT angiography with three-dimensional reconstruction in the evaluation of coronary artery bypass grafts.

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Electron-beam CT angiography with three-dimensional reconstruction in the evaluation of coronary artery bypass grafts.