采用标准分辨率和高分辨率磁共振血管造影对颅内盘绕型动脉瘤进行随访。

Follow up of coiled intracranial aneurysms with standard resolution and higher resolution magnetic resonance angiography.

作者信息

Dupre S, Coulthard A

机构信息

Department of Medical Imaging, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.

出版信息

J Med Imaging Radiat Oncol. 2008 Feb;52(1):57-63. doi: 10.1111/j.1440-1673.2007.01912.x.

DOI:10.1111/j.1440-1673.2007.01912.x

PMID:18373828

Abstract

Time-of-flight magnetic resonance angiography is a non-invasive alternative to digital subtraction angiography (DSA) for follow up of coiled intracranial aneurysms. Standard cranial MRA protocols are a compromise between spatial resolution and imaging time. This study compares a standard resolution MRA protocol with a protocol at higher spatial resolution MRA (HR-MRA) in 21 follow-up occasions in 17 coiled aneurysms in 15 patients. Images were reviewed for presence of residual or recurrent aneurysm and compared with DSA as the gold standard. Aneurysm flow signal on standard resolution MRA differed significantly from HR-MRA in 6/21 cases (P = 0.02) and DSA in 6/21 cases (P = 0.02). HR-MRA had 100% concordance with DSA (P = 1.0). In this study, three-dimensional time-of-flight magnetic resonance angiography carried out at standard resolution is inadequate for follow up of coiled intracranial aneurysms. HR-MRA is comparable to DSA for detection of aneurysm recurrence.

摘要

飞行时间磁共振血管造影术是用于颅内盘绕型动脉瘤随访的一种非侵入性替代数字减影血管造影（DSA）的方法。标准的头颅MRA方案是空间分辨率和成像时间之间的一种折衷。本研究在15例患者的17个颅内盘绕型动脉瘤的21次随访中，将标准分辨率MRA方案与更高空间分辨率MRA（HR-MRA）方案进行了比较。对图像进行复查以确定是否存在残余或复发性动脉瘤，并与作为金标准的DSA进行比较。标准分辨率MRA上的动脉瘤血流信号在6/21例中与HR-MRA有显著差异（P = 0.02），在6/21例中与DSA有显著差异（P = 0.02）。HR-MRA与DSA的一致性为100%（P = 1.0）。在本研究中，标准分辨率下进行的三维飞行时间磁共振血管造影术不足以用于颅内盘绕型动脉瘤的随访。HR-MRA在检测动脉瘤复发方面与DSA相当。