Three-dimensional computed tomography angiography of coronary artery bypass graft with electron beam tomography] |
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Authors: | T Hoshi T Yamauchi T Kanauchi M Konno K Imai J Suwa K Onoguchi K Hashimoto T Horie |
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Institution: | Department of Radiology, Saitama Cardiovascular and Respiratory Center, Itai 1696, Konan-machi, Osato-gun, Saitama 360-0105. |
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Abstract: | OBJECTIVES: Assessment of coronary artery bypass graft patency by three-dimensional reconstructed computed tomography angiography (3D-CTA) derived from electrocardiography-gated contrast-enhanced electron beam tomography (EBT) was evaluated. METHODS: Thirty-nine patients with 99 grafts (45 arterial grafts and 54 venous grafts) underwent 3D-CTA and selective coronary angiography within a 3-week interval. 3D-CTA images of the coronary bypass grafts were compared with the coronary angiography images used as the control. RESULTS: 3D-CTA defined 42 of 44 arterial grafts as patent (sensitivity: 95%), all 47 venous grafts as patent (sensitivity: 100%) and all 7 venous grafts as occlusive (specificity: 100%). The overall sensitivity and specificity were 98% and 88%, respectively. CONCLUSIONS: 3D-CTA is an useful noninvasive technique with adequate sensitivity and specificity to assess coronary artery bypass graft patency. |
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