| 李刚,王小宜,曾纪珍.MRI评价肺动静脉瘘[J].中国医学影像技术,2002,18(4):344~346 |
| MRI评价肺动静脉瘘 |
| MRI Evaluation of Pulmonary Arteriovenous Fistula |
| 投稿时间：2001-12-26 |
| DOI： |
| 中文关键词: 肺动静脉瘘 磁共振成像 磁共振血管造影 诊断 |
| 英文关键词:Pulmonary arteriovenous fistula MRI MRA Diagnosis |
| 基金项目: |
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| 中文摘要: |
| 目的 评价MRI、MRA等对肺部血管畸形的临床应用价值。方法 分析了6例手术或血管造影证实的AVF病例的多种表现,其中男5例,女1例,采用 1.0T超导MRI仪,体线圈技术。分别行SE、2D-TOF、3D-TOF及cine-MRI多种序列成像,共行35次MRI和MRA等检查。结果 6例AVF中共发现9个病灶。2例共3个病灶在SE序列中可见大小不等流空信号,其余为等信号之软组织块影、边缘不规则;在梯度回波序列(2D、3D-TOF及cine-MRI)中病灶均呈高信号或极高信号影,在2D-TOF中可见到5例病灶的供血动脉及3例引流静脉;在3D-TOF中可见到4例病灶的供血动脉及2例引流静脉;在cine-MRI序列中可见到3例病灶供血动脉及2例引流静脉,且cine-MRI可见到5例病灶内信号强弱变化同心动周期一致。结论 目前,MRI多种序列的结合应用,可以较准确地诊断AVF,作为一种无创性诊断方法有一定临床应用价值。 |
| 英文摘要: |
| Objective To evaluate MRI and MRA in clinical management for the diagnosis of pulmonary arteriovenous fistula(AVF). Methods The signs of MRI and MRA in 6 cases with AVF proved by operation or X-ray pulmonary angiography, including male (n=5) and female (n=1) were analyzed. Imaging was performed using a 1.0 Tesla superconducting MR system with a body coil. SE , 2D-TOF, 3D-TOF and cine-MRI sequences were carried out in the 6 patients with 35 pulmonary MRI and MRA. Results Nine lesions were discovered in 6 patients of AVF. Three lesions were hypointensity on T1-Weighted Spin-echo imaging in 2 cases, others were isointensity irregular masses. All lesions presented hyperintensity of much high-intensity on gradient-recalled echo (2D-TOF, 3D-TOF and cine-MRI) imaging. The supply artery of 5 cases and the drain veins of 3 cases were presented on 2D-TOF; The supply artery of 4 cases and the drain veins of 2 cases could be seen on 3D-TOF; The supply artery of 3 cases and the draining veins of 2 cases were viewed on cine-MRI, but also the signal intensity changes with the lesions were similar to the cardic cycle changes. Conclusion The varied sequences of MR imaging were combined with operation for rising diagnostic rate of AVF at present. MRI and MRA are noninvasive diagnostic Methods and have certain clinical value for AVF. |
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