Midterm follow-up of patients receiving radial artery as coronary artery bypass grafts using 16-detector-row CT coronary angiography

被引：4
作者：
Crusco F. [1 ,5 ]
Antoniella A. [2 ]
Papa V. [2 ]
Menzano R. [2 ]
Di Lazzaro D. [3 ]
Di Manici G. [3 ]
Ragni T. [3 ]
Giovagnoni A. [4 ]
机构：
[1] Dipartimento Diagnostica Per Immagini, AUSL 3 Umbria, Ospedale Foligno, Perugia
[2] Dipartimento Diagnostica Per Immagini, AUSL 2 Umbria, Ospedale Assisi, Perugia
[3] SC Cardiochirurgia, Ospedale S. Maria Misericordia, Perugia
[4] Istituto di Radiologia, Università Politecnica Delle Marche, Ospedale Torrette, Ancona
[5] I-06087 Perugia
来源：
La radiologia medica | 2007年 / 112卷 / 4期
关键词：
Coronary artery bypass graft; Multidetector CT; Radial artery;
D O I：
10.1007/s11547-007-0160-6
中图分类号：
学科分类号：
摘要：
Purpose. The study was undertaken to evaluate the 3-year outcome of patients undergoing coronary artery bypass grafting (CABG) involving the use of the radial artery (RA) in comparison with the left internal mammary artery (LIMA) and saphenous vein (SV) grafts by using 16-slice multidetector computed tomography (MDCT). Materials and methods. Fifty-one patients underwent electrocardiogram (ECG)-gated 16-MDCT 32±4 months after surgery. A total of 50 LIMA grafts, 55 SV grafts and 51 RA grafts were studied. Approximately 68.6% or RAs were free, 21.5% sequential and 9.8% composite. Grade 0 was defined as complete patency, grade 1 as focal stenosis (>70%) and grade 2 as graft occlusion. The Fisher exact test was used to analyse variables (p<0.05 significant). Concordance between readers for the detection of patency was calculated by the κ-value. Results. LIMA had the best patency rate (94.0%), followed by SV (83.6%) and RA (74.5%). Regarding RA, the patency rate by territory was 79.4% in the left circumflex coronary artery (LCX), 72.7% in the left anterior descending (LAD) and 50% in the right coronary artery (RCA); the occlusion rate was 20.0% among free grafts, 18.2% among sequential grafts and 20.0% among composite grafts. The κ-value was 0.86. Conclusions. Sixteen-slice MDCT scanners enable accurate analysis of CABG status and are a useful noninvasive diagnostic tool for midterm clinical follow-up of patients who have undergone CABG involving the use of RA. © 2007 Springer-Verlag.
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页码：538 / 549
页数：11
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