Objective: To investigate the diagnostic value of time-resolved imaging of contrast kinetics (TRICKS) in the evalution of lower extremity arterial disease of diabetic patients. Methods : Twenty patients with symptom of arteriosclerotic occlusive disease were evaluated with TRICKS techniques by using GE signa HD l. 5 T scanning , the raw data transmitted to ADW4. 3 workstation, using multi-planar reconstruction (MPR) and maximum intensity projection (MIP) technique to reproduce the original image of blood vessels. Interested in blood vessels is divided into six segments. followed by popliteal artery. tibial peroneal trunk artery. anterior tibial artery. posterior tibial artery. peroneal artery, dorsalis pedis artery stenosis evaluation And to use the image raw data right calf muscle to make the time- the signal strength analysis.Results: Twenty patients in the lower limb vessels meet the diagnostic requirements of all segments. Mixed with the low rate of intravenous dye does nor affect the diagnosis. The lower extremity vascular that contrast to the stenosis segment of a serious leg structure strengthening the biggest increase in slope is lower than the opposite side. the signal values are also differences. Conclusion : TRICKS be able ro clearly show the various segments of lower extremity vascular stenosis and can evaluate the extent of clinicians to provide accurate diagnosis and treatment based on location. TRICKS imaging with tissue perfusion analysis can evaluate the blood supply of lower limb soft tissue conditions.%目的:探讨TRICKS(时间决定对比剂动态成像法)扫描技术在诊断糖尿病下肢血管病变诊断中的应用.方法:对20例糖尿病下肢动脉病变患者行动态增强(TRICKS)扫描,原始数据传到ADW4.3工作站,利用多平面重建及最大密度投影技术对原始图像处理进行血管重现.感兴趣血管分为6个节段,依次对胭动脉、胫腓主干动脉、胫前动脉、胫后动脉、腓动脉、足背动脉狭窄程度进行评价.并利用图像原始数据对小腿肌肉作时间-信号强度分析.结果:20例患者中下肢血管各节段符合诊断要求.静脉混染率低不影响诊断.两下肢血管节段对比狭窄严重的小腿组织强化最大上升斜率较对侧为低,信号值也有差异.结论:TRICKS能清晰显示下肢各节段血管且能评价血管狭窄程度,为临床医生提供准确的诊断定位及治疗依据.TRICKS成像结合组织灌注分析能够评价下肢软组织的血供状况.
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