Dorffner R, Thurnher S, Prokesch R, Youssefzadeh S, Hölzenbein T, Lammer J
Department of Radiology, University of Vienna, AKH, Waehringer Guertel 18-20, A-1090 Vienna, Austria.
Cardiovasc Intervent Radiol. 1998 Mar-Apr;21(2):179-82. doi: 10.1007/s002709900239.
We evaluated the vascular territory of accessory renal arteries in cases where the vessel might be overlapped by an aortic stent-graft. Spiral CT during selective accessory renal artery angiography was performed in four patients with abdominal aortic aneurysms (including one with a horseshoe kidney). The volume of the vascular territory of each renal artery was measured using a software program provided by the CT unit manufacturer. The supernumerary renal arteries perfused 32%, 37%, 15%, and 16% of the total renal mass, respectively. In two patients, stent-grafts were implanted, which resulted in occlusion of the supernumerary renal artery. The volume of the renal infarction was equal to the volume perfused by the artery as calculated before implantation of the stent-graft. The method proposed is accurate for estimating the size of the expected renal infarction. It might help to determine whether placement of a stent-graft is acceptable.
我们评估了在副肾动脉可能被主动脉覆膜支架覆盖的情况下，副肾动脉的血管供血区域。对4例腹主动脉瘤患者（包括1例马蹄肾患者）进行了选择性副肾动脉血管造影时的螺旋CT检查。使用CT设备制造商提供的软件程序测量每条肾动脉的血管供血区域体积。额外的肾动脉分别灌注了总肾实质的32%、37%、15%和16%。在2例患者中植入了覆膜支架，导致额外的肾动脉闭塞。肾梗死的体积与覆膜支架植入前计算的该动脉灌注体积相等。所提出的方法在估计预期肾梗死大小方面是准确的。它可能有助于确定覆膜支架的放置是否可接受。
