下肢慢性静脉功能不全动脉铸型的三维重建及意义

摘要

Objective To evaluate the three-dimensional reconstruction and significance of arterial cast on chronic venous insufficiency of low extremity. Methods A set of specimen on chronic venous insufficiency of left lower extremity amputation residues was infused with epoxy resin-lead oxide through the femoral artery,and then casted. The CT data of the cast specimen was used to reconstruct 3D modal of ar-tery on chronic venous insufficiency of left lower extremity,using the volume rendering(VR) and maximum intensity projection(MIP). Re-sults The cast specimen and 3D reconstruction of chronic venous insufficiency of left lower extremity amputation residues could clearly dis-play distribution and run of lower extremity arteries,blood supply of lesion and local region embolism of small artery ( arteriole) . Conclusion The 3D modal of artery on chronic venous insufficiency of left lower extremity should provide morphological basis of exact etiology and perfect pathogenesis,also has a certain guiding significance of clinical diagnosis and treatment.%目的：探讨下肢慢性静脉功能不全动脉铸型的三维重建及意义。方法采用改良环氧树脂混合液-氧化铅填充剂对1例左侧下肢截肢残体慢性静脉功能不全( CVI)标本进行灌注并铸型，并在铸型基础上行64层螺旋CT薄层扫描，以容积再现法( VR)和最大密度投影法( MIP)重建三维数字化模型。结果血管铸型和CT三维重建的左侧下肢截肢残体CVI动脉模型均清晰地显示下肢动脉的分布及走行、内侧踝关节溃疡灶内踝网血供情况及局部区域性小动脉(微动脉)栓塞情况。结论下肢CVI动脉模型可为CVI确切病因和完善病理机制提供形态学基础，对临床诊断和治疗具有一定指导意义。