摘要
目的:目前创伤和肿瘤引起的皮瓣移植手术开展明显增多,术前定位对手术成功率尤为关键,探讨三维增强磁共振血管成像(CE-MRA)在股前外侧皮瓣术前的临床应用价值。方法:对68例供体进行双下肢3DFLASH序列CE-MRA检查,数据采集后使用层块最大强度投影(TS-MIP)进行图像重组,观察和评价与供体皮瓣相关的旋股外侧动脉的起始、分支类型、穿支血管分布情况和覆盖范围等。结果:所查患者旋股外侧动脉获得良好显示,其中Ⅰ型101侧(101/136,74.3%)、Ⅱ型20侧(20/136,14.7%)、Ⅲ型3侧(3/136,2.2%)和Ⅳ型12侧(12/136,8.8%);94侧(94/136,69.1%)旋股外侧动脉显示了3级分支。CE-MRA图清晰显示了粗大穿支血管的起始及在皮下和肌肉间的走行,TS-MIP显示细节最好。结论:3DCE-MRA结合TS-MIP可准确、直观地显示供体股前外侧皮瓣血供及其分布的三维立体信息,有效指导皮瓣的设计。
Objective：To evaluate the vasculature of donor anterolateral thigh flaps with three-dimensional contrast-enhanced magnetic resonance angiography （3D CE-MRA）. Methods：Sixt-eight donors underwent 3D CE-MRA of lower extremities with a 1. 5T scanner. The three-dimensional FLASH sequence was applied for contrasted MR angiography. Thin-slab maximum intensity projection （TS-MIP） was used for revealing the vasculature of arteria cincumflexa femoris lateralis （ACFL）,including its origination, branching types, and distribution and covering of perforating artery. Results： The ACFLs in all donors were clearly revealed and classified as branching type A （101,74.3 0%）, type B （20,14.7%）, type C （3,2.2%） ,and type D （12,8.8%）. Three level detail branches were revealed in 94 ACFLs （69.1%）. The origin and distri-bution of perforating arteries were clearly displayed, especially on the TS-MIP. Conclusion： Three dimensional CE-MRA with TS-MIP can precisely reveal the detail vasculature of donor anterolateral thigh flaps, which may be helpful for flap-de-signing.
出处
《放射学实践》
2013年第7期788-792,共5页
Radiologic Practice
基金
2009年度金华市科技局重点科技项目(2009-3-001)
关键词
旋股外侧动脉
皮瓣
磁共振血管成像
图像处理
计算机辅助
Lateral femoral artery
Flaps
Magnetic resonance angiography
Image process, computer assisted
