Ferrari R, De Cecco C N, Iafrate F, Paolantonio P, Rengo M, Laghi A
Department of Radiological Sciences, University of Rome La Sapienza, Polo Pontino, I.C.O.T. Via Franco Faggiana 34, I-04100, Latina, and St. Andrea Hospital, Rome, Italy.
Radiol Med. 2007 Oct;112(7):988-98. doi: 10.1007/s11547-007-0200-2. Epub 2007 Oct 21.
This study was undertaken to evaluate the accuracy of 64-row computed tomography angiography (CTA) in the study of vascular anatomy by assessing the incidence of anatomical variations of the origin of the coeliac trunk, mesenteric arteries and collateral branches.
Sixty patients were evaluated with 64-row CTA (VCT, General Electric Healthcare, Milwaukee, WI, USA) with a collimation of 0.625 mm after the injection of iodinated nonionic contrast material (4 ml/s). Exclusion criteria were the presence of any pathological condition likely to affect normal vascular anatomy.
The coeliac trunk had a normal trifurcation in 56.7% of cases. The common hepatic artery was normal in 60% of patients. The inferior pancreaticoduodenal arteries were either absent or not assessable in 8.3% of cases and there was a double trunk in 5%, a common trunk in 83.3% and a single vessel in 3.3%. The number of jejunal and ileal arteries ranged from a minimum of six to a maximum of 13 (mean value 8.7+/-1.34). The Riolan arcade was assessable in 31.7% and developed in 68.4% of these.
The 64-row CTA enables visualisation of small vessels and accessory arteries that are difficult to identify with other techniques. The technique's high sensitivity allowed us to observe that the prevalence of vascular abnormalities is higher than that reported in the literature.
本研究旨在通过评估腹腔干、肠系膜动脉及其分支起源的解剖变异发生率，来评价64排计算机断层血管造影（CTA）在血管解剖学研究中的准确性。
60例患者接受了64排CTA（VCT，美国通用电气医疗集团，密尔沃基，威斯康星州）检查，注射碘非离子型对比剂（4ml/s）后准直为0.625mm。排除标准为存在任何可能影响正常血管解剖的病理状况。
腹腔干在56.7%的病例中呈正常三分叉。60%的患者肝总动脉正常。8.3%的病例中胰十二指肠下动脉缺如或无法评估，5%为双干，83.3%为共干，3.3%为单支血管。空肠和回肠动脉数量最少为6支，最多为13支（平均值8.7±1.34）。31.7%的病例中可评估Riolan弓，其中68.4%发育良好。
64排CTA能够显示其他技术难以识别的小血管和副动脉。该技术的高敏感性使我们观察到血管异常的发生率高于文献报道。
