2D Thick-section MR digital subtraction angiography for the assessment of dural arteriovenous fistulas.
2D Thick-section MR digital subtraction angiography for the assessment of dural arteriovenous fistulas.
复制标题
二维厚切片 MR 数字减影血管造影用于评估硬脑膜动静脉瘘。
DOI：
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
I. Nagata
中科院分区：
文献类型：
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作者：
N. Horie;M. Morikawa;N. Kitigawa;K. Tsutsumi;M. Kaminogo;I. Nagata
背景和目的
尽管动静脉畸形(AVF)和脑肿瘤的动态增强MR血管成像研究已经显示出有希望的结果，但还没有正式的尝试来类似地评估硬脑膜AVF。为评价2D厚层增强MR数字减影血管成像(MRDSA)在硬脑膜动静脉瘘诊断和治疗中的应用价值，对MRDSA与动脉内数字减影血管造影(IADSA)进行了比较。
方法
我们对25例硬脑膜动静脉瘘进行了80次连续的MRDSA检查，其中包括11例海绵窦、9例乙状窦、2例天幕窦、1例前髁状静脉、1例颅颈交界处和1例脊柱。在开始注射加德宁螯合物后，连续获得磁共振图像，并构建减影图像。此后，我们评估了在围手术期或随访研究中与IADSA并行进行的所有46幅MRDSA图像的成像质量和血流动力学信息。
结果
大多数MRDSA图像发现早期静脉充盈、窦闭塞、软脑膜静脉回流和静脉曲张。然而，由于部分体积效应和低空间分辨率，很难识别供血动脉。最重要的是，MRDSA能准确发现有软脑膜静脉引流和静脉曲张的侵袭性病变。
结论
我们的MRDSA技术被发现在描述硬脑膜动静脉瘘的所有解剖细节方面的价值有限，尽管它能够识别与出血风险相关的重要血流动力学异常。因此，MRDSA是一种侵入性较小的动态血管造影工具，不仅可用于围手术期研究，也可用于后续研究。
BACKGROUND AND PURPOSE
Although dynamic contrast-enhanced MR angiography studies for arteriovenous malformations (AVFs) and brain tumors have shown promising results, no formal attempt has yet been made to similarly evaluate dural AVFs. To assess the practical applicability of 2D thick-section contrast enhanced MR digital subtraction angiography (MRDSA) for the diagnosis and management of dural AVFs, MRDSA and intra-arterial digital subtraction angiography (IADSA) were comparatively evaluated.
METHODS
We performed 80 consecutive MRDSA studies for 25 dural AVFs, including 11 cavenous sinuses, 9 sigmoid sinuses, 2 tentorial sinuses, one anterior condylar vein, one craniocervical junction, and one spine. MR images were continuously obtained following the initiation of a bolus injection of gadrinium chelates and subtraction images were constructed. We thereafter evaluated the imaging quality and hemodynamic information from all 46 MRDSA images performed in parallel with IADSA in either perioperative or follow-up studies.
RESULTS
Most MRDSA images detected early venous filling, sinus occlusion, leptomeningeal venous drainage, and varices. It was difficult, however, to identify the feeding arteries because of both the partial volume effect and a low spatial resolution. Most important, MRDSA accurately detected aggressive lesions with leptomeningeal venous drainage and varices.
CONCLUSION
Our MRDSA technique was found to have limited value for depicting all the anatomic details of dural AVFs, though it was able to identify important hemodynamic abnormalities related to the risk of hemorrhaging. MRDSA is therefore useful as a less invasive, dynamic angiographic tool, not only for perioperative studies but also for follow-up studies.
颈动脉分叉处的对比增强 3D MR DSA：与非增强 2D 和 3D 飞行时间 MR 血管造影比较的初步研究。
DOI：
10.1148/radiology.208.2.9680574
发表时间：
1998
期刊：
Radiology.
影响因子：
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作者：
Willig,DS;Turski,PA;Frayne,R;Graves,VB;Korosec,FR;Swan,JS;Mistretta,CA;Grist,TM
通讯作者：
Grist,TM