16层螺旋CTA术前评估主动脉夹层及动脉瘤腔内隔绝术的价值

The Value of 16-slice Spiral CAT Preoperative Assessment in Aortic Dissection and Aneurysm Endovascular Exclusion

目的对于术前评估16层螺旋CT血管成像在腹主动脉瘤腔内和主动脉夹层带膜支架置入的价值的探讨。方法 16层螺旋CT血管成像术前对30例主动脉瘤患者进行检查。采用层面准值160.76,螺距0.9,重建层厚0.9mm,间隔0.8mm;按患者体重计算碘对比剂总量,用小剂量对比剂试验法测定CTA延迟扫描时间;动脉瘤腔内及主动脉夹层带膜支架置入,要运用专用软件重点测量术前所需的所有参数。结果型夹层21例,单个破口19例,多个破口2例。其中6例符合腔内隔绝术;腹主动脉瘤9例,其中3例符合腔内隔绝术。腹主动脉瘤16-MSCTA提示合并动脉粥样硬化改变6例,与病理诊断结果一致(100%)。结论 16-MSCTA可对瘤体从整体到局部进行多方位的测量和观察,给腔内隔绝术提供所需的各项参数,为腹主动脉瘤和主动脉夹层选择治疗方案,提供更多的信息以便于术前规划[1]。

Objective To preoperative assessment 16 layer spiral CT imaging blood vessels in abdominal aneurysm cavity and aortic dissection of stent placement with film the value of the discussion. Methods16 layer spiral CT imaging preoperative blood vessels to 30 cases of patients with aortic aneurysm is checked. The 160.75 level must value, pitch 0.9, 0.9 mm thick layer of reconstruction, the interval0.8 mm; According to the weight calculation iodine contrast agents in patients with total, with small dose contrast agents test method to determine the CTA scanning time delay; Inside the cavity aorticdissecting aneurysm and with film stents, to use special software key measure all the necessary parameters before. Results Type sandwich 21 cases, a single gap （19 cases）, multiple breach in 2 cases. Six patientsmeet cavity was cut~ Abdominal aneurysm 9 cases, three cases with cavity was cut. Abdominal aneurysm16-MSCTA tip merger atherosclerosis change in 6, and pathological diagnosis results （100%）. Conclusion 16- MSCTA occlusion of from the whole to the local multi-faceted measurement and observation, give cavity wascut to provide all the necessary parameters, for abdominal aortic aneurysm and aortic dissection choice treatment plan, provide more information in order to preoperative planning^[1].