彩色多普勒超声与多层螺旋CT静脉成像对下肢深静脉血栓诊断的对比研究

目的：探讨彩色多普勒超声和多层螺旋CT静脉成像（MSCTV）对下肢静脉血栓诊断的价值并进行对比研究。方法：43例可疑下肢静脉血栓形成患者分别接受下肢静脉超声和MSCTV检查，超声检查主要运用二维超声，并辅以多普勒技术和加压技术等。多层螺旋CT（MSCT）扫描后采用多平面重建及曲面重建等后处理技术显示下肢静脉，患者均于超声检查后24h内进行MSCTV。结果：43例患者中，下肢静脉超声共发现37例患者存在下肢静脉血栓，计栓子83个，其中57个栓子位于胭静脉、股静脉内；MSCTV发现41例患者存在静脉血栓，其中3例为髂内静脉内孤立性栓子，1例为下腔静脉内孤立性栓子，计栓子88个，其中59个栓子位于胭静脉、股静脉内。彩色多普勒超声和MSCTV对下肢静脉血栓的诊断结果差异无显著性（P〉0．05）。结论：下肢静脉超声与MSCTV对下肢静脉血栓形成的诊断具有高度一致性。

A comparative study of ultrasound and multi-slice spiral CT venography on the diagnosis of venous thrombosis of lower limbs

Objective: To explore the diagnostic value of ultrasound and multi-slice spiral CT venography on the diagnosis of venous thrombosis of lower limbs and make a comparative study between these two modalities. Methods: 43 patients with suspected lower leg venous thrombosis were examined. Each patient underwent Color Doppler sonography and multi-slice spiral CT venography(MSCTV) within 24 hours after ultrasound study,and multiple planar reconstruction technique and curved planar reconstruction technique were made for venography of lower limbs. Results: Among 43 patients,37 patients were diagnosed as venous thrombosis of lower limbs by Ultrasound,83 thrombi in all,57 of them are located in femorapopliteal veins. 41 venous thrombosis patients diagnosed by multi-slice spiral CT venography,88 thrombi in all,59 of them in femorapopliteal veins. Diagnostic results of these two modalities for venous thrombosis had no obvious differenc(eP>0.05). Conclusion: Ultrasound and multi-slice spiral CT venography are valuable modalities on the diagnosis of venous thrombosis of lower limbs,and the comination of these two modalities can enhance detecting rate of renous thrombosis.