TY - JOUR AU - Jungmann, Florian; Emrich, Tilman; Mildenberger, Peter; Emrich, Anna Lena; Düber, Christoph; Kreitner, K. F. TI - Multidetector Computed Tomography Angiography (MD-CTA) of Coronary Artery Bypass Grafts – Update 2017 TT - Multidetektor-Computertomografie-Angiografie (MD-CTA) aortokoronarer Bypässe – Update 2017 SN - 1438-9029 SN - 1438-9010 PY - 2018 JO - Rofo JF - RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren LA - DE VL - 190 IS - 03 SP - 237 EP - 249 ET - 2017/11/03 DA - 2018/03/01 KW - coronary artery bypass grafting KW - multidetector computed tomography KW - cardiac-gated imaging techniques KW - vascular patency KW - radiation monitoring AB - Background Coronary artery bypass grafting (CABG) is still an important therapeutic approach in the treatment especially of advanced coronary artery disease. In this study, we elucidate the current role of multidetector computed tomography angiography (MD-CTA) in imaging patients after CABG surgery.Method This study is based on recent reports in the literature (2007 – 2016) on imaging of CABG using 64-slice MD-CT scanners and beyond. We included 13 reports that compared ECG-gated MD-CTA with conventional invasive coronary angiography (ICA) as the reference standard for the assessment of graft patency and for the detection of > 50 % stenoses. These studies had to provide absolute values for true-positive, true-negative, false-positive and false-negative results or at least allow calculation of these numbers. In total, 1002 patients with 2521 bypass grafts were the basis for this review.Results and Conclusion The sensitivity and specificity for the assessment of graft patency or the detection of > 50 % graft stenosis were 97.2 % and 97.5 %, respectively. The negative and positive predictive values were 93.6 % and 99 %, respectively. By using prospective ECG-gating and an increasing pitch factor, the radiation dose exposure declined to 2.4 mSv in the latest reports. ECG-gated MD-CTA provides a fast and reliable, noninvasive method for assessing patients after CABG. The most substantial benefit of the newest CT scanner generations is a remarkable reduction of radiation dose exposure while maintaining a still excellent diagnostic accuracy during recent years.Key Points Citation Format PB - © Georg Thieme Verlag KG DO - 10.1055/s-0043-120528 UR - http://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0043-120528 ER -