胸主动脉瘤的MRA诊断及其对腔内隔绝术的指导意义

Thoracic aortic aneurysm diagnosed by MRA:The directive significance for endovascular exclusion

目的 探讨MRA对胸降主动脉瘤的诊断价值及对腔内隔绝术的指导意义。方法 本组6例患者行MRA检查,并以此为依据接受腔内隔绝术治疗。结果 MRA显示瘤体大小为36×32mm至51× 63mm,瘤颈远近端的正常主动脉直径为24-30mm和26-32mm,重要分支清晰可见,腔内隔绝术均获成功。结论 MRA可清楚显示胸降主动脉瘤的立体结构,主要分支与主动脉瘤的关系,对诊断和指导腔内隔绝术具有重要价值。

Purpose To discuss the significance of MRA in diagnosis of thoracic aortic aneurysms before endovascular exclusion. Methods Six patients received the MRA sequence, and results were based to operate the endovascular exclusion. Results The size of the aneurysms showed on the MRA images were 36 × 32mm to 51 × 63mm, while the diameters of the proximal and distal necks were 24mm to 30mm and 26mm to 32mm. The main branches were clearly manifested. All the EVE procedures were succeeded. Conclusion The solid figures of the a-neurysms, the relationship between the main branches and the aneurysms are all manifested clearly on the MRA images. This is of high value of diagnosis and directing the EVE procedure.