[Three-dimensional computed tomography angiography of coronary artery bypass graft with electron beam tomography].
OBJECTIVE
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.
Hoshi
T
T
Department of Radiology, Saitama Cardiovascular and Respiratory Center, Itai 1696, Konan-machi, Osato-gun, Saitama 360-0105.
Yamauchi
T
T
Kanauchi
T
T
Konno
M
M
Imai
K
K
Suwa
J
J
Onoguchi
K
K
Hashimoto
K
K
Horie
T
T
D000368:Aged; D000369:Aged, 80 and over; D017023:Coronary Angiography / Q000379:methods; D001026:Coronary Artery Bypass; D023921:Coronary Stenosis / Q000000981:diagnostic imaging; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014654:Vascular Patency