右膈下动脉多层螺旋CT血管造影表现

Manifestation of right inferior phrenic artery in multi-slice spiral CT angiography

目的分析正常人和肝细胞癌(HCC)患者右侧膈下动脉(RIPA)在多层螺旋CT血管造影(MSCTA)中的表现。方法选择MSCTA清楚显示RIPA者304例(正常人242例,HCC患者62例),采用容积再现(VR)方法进行血管重建,观察RIPA的起源、分布及参与HCC供血情况。结果304例中,159例(52.3%)RIPA开口于腹主动脉,57例(18.8%)开口于右侧肾动脉,88例(29.0%)开口于腹腔动脉干,41例(13.5%)双侧膈动脉共干,6例(2.0%)与胃左动脉共干,3例(1.0%)双侧膈动脉、胃左动脉共干。RIPA参与HCC供血达17.7%(11/62)。结论MSCTA能清楚显示RIPA起源,准确评价其参与HCC供血情况,指导TACE治疗。

Objective To analysis appearance of the right inferior phrenic artery （RIPA） both of healthy person and hepatocellular carcinoma （HCC） patients in multi slice spiral CT angiography （MSCTA）. Methods Blood vessels were reconstructed by volume rendering （VR） , and the origin and branches of RIPA were observed in 304 cases in MSCTA, including 242 healthy person and 62 patients of HCC. Results There were 159 cases （52.3%）, 57 cases （18.8%） and 88 cases （29.0%） of RIPA originating from abdominal aorta, right renal artery and coeliac trunk, respectively. In addition, there were 41 cases （13.5%） of left inferior phrenic artery （LIPA） and RIPA originating from a same trunk, 6 cases （2.0%） of RIPA and left gastric artery （LGA） originating from one trunk and 3 cases （1.0%） of RIPA, LIPA and LGA originating from one trunk. In the patients of HCC, RIPA participating in blood supplying for tumor accounted for 17.7% （11/62）. Conclusion MSCTA can clearly show the origin of RIPA and provide useful information for TACE in patients of HCC.