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对常规血管造影的25例病人作了CT血管成像(CTA)研究,男14例,女11例,年龄24～73岁。以4ml/s输入20ml非离子型对比剂后8～15s开始从胸_(12)至腰_5进行10mm层厚横断面成像。在最佳强化期间一次屏气获得从腹腔动脉至腹主动脉分叉处的CTA。以4ml/s速率输入120ml对比剂,然后用20ml盐水冲洗。1mm准直和2.0螺距(10例)或3mm准直和1.0～2.0螺距(15例)。22cm视野、1或1.5mm准直对靶影像重建。移出骨结构和其他周围组织后,以512×512矩阵成像,用最大强度投影
CT angiography (CTA) was performed on 25 patients undergoing routine angiography. There were 14 males and 11 females, aged 24-73 years. A 10 mm slice cross-sectional imaging from chest_ (12) to waist_5 was started 8 to 15 s after 20 ml of non-ionic contrast agent was infused at 4 ml / s. CAC was obtained from the celiac artery to the bifurcation of the abdominal aorta at one breath-hold during the best fortification. 120 ml of contrast agent is infused at a rate of 4 ml / s and then rinsed with 20 ml of saline. 1mm collimation and 2.0 pitch (10 cases) or 3mm collimation and 1.0 ~ 2.0 pitch (15 cases). 22cm field of view, 1 or 1.5mm alignment of the target image reconstruction. After removal of the bone structure and other surrounding tissue, imaging was performed on a 512 x 512 matrix with maximum intensity projection