摘要
目的探讨CT血管造影(MSCTA)在移植肾动脉狭窄(TRAS)中的监测评价作用。方法 15例TRAS实施了MSCTA,后处理方法为MPR、CPR、VR、MPVR、MIP及VP。对所有后处理方法进行分析,观察移植肾动脉的情况,比较各自优缺点。结果 TRAS的CT征象表现为狭窄局部血管明显变细,肾实质强化减低。CT后处理方法:①MPR仅有1例可以将移植肾的肾动脉显示于同一层面中;②CPR的13例可在冠、矢状面上显示移植肾动脉全程情况;③VR的15例均可通过旋转体位清晰观察迂曲的移植肾动脉走行状态和血管狭窄外观;④MPVR的15例可同时显示出移植肾动脉及TRAS情况;⑤MIP中9例可以同一平面上显示TRAS的部位;⑥VP的15例可以较好地显示移植肾动脉管腔内部情况,狭窄程度显示清晰。15例TRAS中吻合口狭窄者8例,吻合口远处狭窄者4例,吻合口和远处均有狭窄者2例,全程狭窄者1例。结论 MSCTA作为术后监测TRAS的影像学检查技术,能够直接清晰的显示移植肾动脉狭窄部位、形态,而且可以指导PTA及观测血管内支架植入疗效,将在临床上发挥越来越重要的应用价值。
Objective To evaluate the value of muhislice CT angiography （MSCTA） in transplant renal artery stenosis（TRAS）. Methods Fifteen cases of TRAS underwent enhanced MSCT scanning postoperation. Multi-planar reformation （MPR）, CPR（curved-planar reformation）, volume rendering （VR）, multi-planar volume reformation （MPVR）, maximum intensity projection（MIP） and vessel probe（VP） reformation were performed to observe transplant kidney＇ s artery. To analyse all the reconstruction technique and find the advantage and shortage of them. Results CT findings of TRAS showed local vascular thining and enhanced renal parenchyma degradinged. CT reconstruction technique：（1）Transplant kidney＇ s artery of only one case could be shown in the same MPR plane; （2）Transplant kidney＇ s artery of 13 cases could be shown in CPR coronal and sagittal plane; （3）with 15 cases of VR, stage of courser and shape of angiostegnosis could be observed clearly through rotating the reconstruction image from different directions; （4）15 cases of MPVR could reveal transplant kidney＇ s artery and TRAS at the same time; （5）9 cases of MIP could show TRAS in one plane; （6）15 cases of VP could show condition inside the vessel of transplant kidney,with the degree of stenosis appeared clearly. Of 15 cases of TRAS,stenosis occurred in stoma （8 cases）, distant place from stoma （4 cases）, stoma and distant place from stoma （2 cases）, stenosis occurred in whole range （oe case. Conclusion MSCTA has an important role as an imaging technique to evaluate TRAS of transplant kidney, which can replace DSA. It can reveal the stenosis part of vessel and direct PTA, to evaluate therapeutic effect of endovascular stent placement. MSCTA will be widespread used clinically.
出处
《影像诊断与介入放射学》
2010年第3期151-154,共4页
Diagnostic Imaging & Interventional Radiology
