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The Diagnostic and Clinical Value of SCTA，MRA，CDFI for Abdominal Aortic Aneurysms
董其龙1 刘喜鸿2 陈自谦1
Qi－long Dong，Xi－hong Liu，Zi－qian Chen
1南京军区福州总医院医学影像科，福州 350025
2南方医科大学（原第一军医大学）医学影像专业，广州 510515
Abstract
Objective：To determine the value of SCTA，MRA，CDFI for abdominalaortic aneurysms（AAA）after diagnosis and therapy of clinic.
Methods：30 patients were diagnosed as AAA by SCTA MRA CDFI. After Clinical therapy，including 14 patients with operation and 16 patients with conservative therapy，22 patients were re－examined by CDFI，and 18 patients re－examined by SCTA，9 patients with MRA scan. The change of aneurismal diameter，and the complications after operation were recorded.
Results：In operative treatment group，there were 4 patients with complete aneurysmal occlusion，patients with perigraft channels，1 patient with decreased aneurysmal diameter and 3 patients with increased aneurysmal diameter. In conservative therapy group，there were 4 patients died of aneurysmal rupture，and 4 patitents with increased aneurysmal diameter，8 patients remained unchanged.
腹主动脉瘤（abdominal aortic aneurysm，AAA）是最常见的动脉瘤，大多数是由于动脉硬化引起。腹主动脉瘤最严重结果是脉瘤壁破裂，如为前壁破裂，死亡率高达90％。传统手术、介入下植入内支架是其主要有效治疗手段，手术并发症的风险问题，影响采用何种治疗手段。笔者通过对30例腹主动脉瘤临床治疗前后的观察，评价SCTA、MRA、彩色多谱勒对腹主动脉瘤的诊断及临床价值。
材料与方法
2001年4月至2006年4月，共对30例患者进行诊断及临床治疗，经SCTA、MRA、彩色多谱勒诊断为腹主动脉瘤30例（合并髂总动脉瘤8例、合并胸主动脉瘤1例）。29例男性患者，1例女性患者，年龄29～84岁，平均69岁。应用Discovery ultra16层螺旋SCTA管电压120kv管电流260mAs，扫描类型为Helical Full0.8 sec，层厚1.25mm，间距1.25mm，螺距1.375：1，重建视野36cm，重建矩阵515X512。根据病灶大小，选择扫描大小范围，采用120kV p，250mA。肘静脉注入欧乃派克，注射流速2.5～3.5ml/s，Smartprep扫描系统，靶血管区达预置阈值后，启动扫描程序，完扫描过程。图片于工作站（AW4.1）并做多平面重建（MPR）和三维最大密度投影（MIP）和容积重建（VR）、曲面重建（CPR）。 | 
