Combined use of the intravascular blood-pool agent, gadomer, and carbon dioxide: a novel type of double-contrast magnetic resonance angiography (MRA).
Combined use of the intravascular blood-pool agent, gadomer, and carbon dioxide: a novel type of double-contrast magnetic resonance angiography (MRA).
复制标题
血管内血池剂、gadomer 和二氧化碳的联合使用：一种新型双对比磁共振血管造影 (MRA)。
DOI：
10.1002/jmri.20304
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Wacker,FrankK
中科院分区：
文献类型：
--
作者：
Maes,RobbertM;Lewin,JonathanS;Duerk,JeffreyL;Wacker,FrankK
PurposeTo evaluate the combined use of carbon dioxide（CO2）and a gadolinium-based blood-pool agent for magnetic resonance angiography（MRA）.Materials and MethodsAfter a initial intravenous injection of the blood-pool agent Gadomer（Schering AG，德国），repeated transcatheter CO2 injections were performed in the aortic and the renal arteries of two fully麻醉patients.真实的-时间图像采集使用真正的快速成像与稳态进动（FISP）sequence.ResultsDuring的CO2注射，Gadomer增强的血液被完全取代，导致在一个即时的，暂时的，总的信号损失的血管腔。在注射或导管manipulation.ConclusionDue的磁化伪影很少发生T1缩短，循环血池剂防止流动伪影在导管操作，因为达到稳定状态要早得多。因此，这种双重对比MRA方法提高了导管的显著性，可能有助于在介入性MRI期间引导和控制血管内手术。J.磁共振成像2005;21：645-649.© 2005 Wiley利斯公司
PurposeTo evaluate the combined use of carbon dioxide (CO2) and a gadolinium‐based blood‐pool agent for magnetic resonance angiography (MRA).Materials and MethodsAfter an initial intravenous injection of the blood‐pool agent Gadomer (Schering AG, Germany), repeated transcatheter CO2injections were performed in the aorta and the renal arteries of two fully‐anesthetized pigs. Real‐time images were acquired using a true fast imaging with steady‐state precession (FISP) sequence.ResultsDuring the CO2injections, the Gadomer‐enhanced blood was totally replaced, resulting in an immediate, temporary, total signal loss in the vessel lumen. Susceptibility artifacts during the injections or catheter manipulations rarely occurred.ConclusionDue to T1‐shortening, the circulating blood‐pool agent prevents flow artifacts during catheter manipulations because the steady‐state is reached much earlier. Therefore, this double‐contrast MRA method improves catheter conspicuity and might be helpful for guiding and controlling intravascular procedures during interventional MRI. J. Magn. Reson. Imaging 2005;21:645–649. © 2005 Wiley‐Liss, Inc.