16层螺旋CT静脉成像技术在下肢深静脉血栓性病变的应用价值

目的:探讨16层螺旋CT静脉血管成像技术对下肢深静脉血栓性病变的诊断价值。材料与方法:通过16层螺旋CT对31例患者行16层螺旋CT静脉血管成像(MSCTV)检查,所有采集的原始数据导入ADW4.1高级后处理工作站,经最大密度投影(MIP)、多平面重组(MPR)、容积再现法(VR)重建,从而得到清晰而满意的临床诊断图像。结果:所有受检者血管重建显示良好,31例MSCTV检查中, 26例可显示不同部位、不同程度深静脉血栓形成。MSCTV主要征象包括:受累肢体肿胀,原始轴位图上血管腔内的充盈缺损,重建图像上显示管腔狭窄、中断或变细,明显浅静脉、侧支静脉扩张、纡曲。结论:16层螺旋CT静脉血管成像检查技术可以充分而准确地显示下肢静脉血栓性病变情况,并可显示静脉血管情况,有明显临床应用价值,优于多普勒超声及数字血管减影(DSA)检查,MSCTV可作为下肢静脉血栓性病变诊断的首选检查方法。

The technique and value of 16-slice spiral CT venography in lower extremity thrombosis

Objective:To evaluate diagnostic value of 16-slice spiral CT venography(MSCTV)in detecting venous thrombosis of the lower extremity.Methods:The imaging diagnosis of patients with venous thrombosis of lower extremity was performed on MSCT and processed the data on ADW4.1 workstation.The data of MSCTV were reconstructed with maximum intensity projection(MIP),multiplanar reformation(MPR),volume rendering(VR).Result:Twenty-six cases suspected of having venous thrombosis of the lower extremity were demonstrated successfully with MSCTV.It could clearly reveal the location and extension of the lesion.The pathological changes in MSCTV included swelling of lower extremity,filling defect of vascular lumen,single and/or multiple stenosis and occlusion,forming of collateralization.Conclusion:MSCTV was valuable to demonstrate venous thrombosis of the lower extremity.MSCTV was better than Doppler ultrasonography and DSA in diagnosing venous thrombosis of the lower extremity.MSCTV may be useed as the first choice technique in diagnosing venous thrombosis of the lower extremity.