Vanninen R L, Vainio P A, Manninen H I, Suhonen M, Jaakola P
Department of Clinical Radiology, Kuopio University Hospital, Finland.
Scand J Thorac Cardiovasc Surg. 1995;29(1):7-10. doi: 10.3109/14017439509107194.
The right gastroepiploic artery, increasingly used as an in situ coronary artery bypass graft, has good long-term patency. This study aimed to assess the accuracy and limitations of magnetic resonance imaging (MRI) and colour Doppler ultrasound (US) in postoperative follow-up of such cases. In eight consecutive patients (6 men, 2 women, mean age 57 years), conventional angiography, MRI and US were performed to evaluate graft patency. Colour Doppler US, performed within a week of the operation, correctly detected flow in three patent grafts. MRI (1.5 tesla) was performed c. 17 months after surgery, using a spine coil and a coronal two-dimensional Flash-type imaging sequence. At angiography six of the eight gastroepiploic artery grafts were patent, and two were occluded. The sensitivity and specificity of MRI were 100%. This accuracy makes MRI a promising method for noninvasive post-operative evaluation of right gastroepiploic artery graft patency.
胃网膜右动脉越来越多地被用作原位冠状动脉搭桥移植物，其长期通畅性良好。本研究旨在评估磁共振成像（MRI）和彩色多普勒超声（US）在此类病例术后随访中的准确性和局限性。对连续8例患者（6例男性，2例女性，平均年龄57岁）进行了传统血管造影、MRI和US检查，以评估移植物的通畅情况。术后一周内进行的彩色多普勒US正确检测到3个通畅移植物中的血流。MRI（1.5特斯拉）在术后约17个月进行，使用脊柱线圈和冠状二维快速成像序列。血管造影显示，八根胃网膜右动脉移植物中有六根通畅，两根闭塞。MRI的敏感性和特异性均为100%。这种准确性使MRI成为一种很有前景的用于无创评估胃网膜右动脉移植物通畅情况的术后评估方法。
