The value of true-FISP sequence added to conventional gadolinium-enhanced MRA of abdominal aorta and its major branches
The value of true-FISP sequence added to conventional gadolinium-enhanced MRA of abdominal aorta and its major branches
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DOI：
10.1016/j.ejrad.2008.09.004
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发表时间：
2009-12-01
影响因子：
3.3
通讯作者：
Sardanelli, Francesco
中科院分区：
文献类型：
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作者：
Iozzelli, Andrea;D'Orta, Giovanni;Sardanelli, Francesco
为了验证在钆基磁共振血管造影（Gd-MRA）中加入稳态进动（true-FISP）的真快速成像技术对腹主动脉和主要腹部血管的成像效果，连续35例（年龄67 +/- 11岁）已知或怀疑腹部和/或周围血管疾病的患者在自由呼吸时使用矢状面和轴向2D真快速fisp和冠状面3d快速低角度射击（FLASH） Gd-MRA（屏气，以2 ml/s的速度注射0.2 mmol/kg Gd-DOTA）。我们评估：肾上主动脉、腹腔干、肠系膜上动脉、右肾动脉、左肾动脉、肾下主动脉、肠系膜下动脉、主动脉分叉/髂总动脉、腰椎动脉和主动脉粥样硬化。评估可能存在的副肾动脉、侧支血管和血管假体/支架。两个序列上的每个项目的质量评分为4分，从0（不可见）到3（良好到卓越的图像质量），并使用Wilcoxon检验。主要诊断结果：主动脉正常或动脉粥样硬化（n = 25）；主动脉瘤（n = 2）；主动脉-髂手术假体未闭（n = 2）；未通畅髂血管支架（n = 2）；髂动脉瘤（n = 1）；主动脉血管内假体未闭（n = 1）；主动脉-股动脉旁路术（n = 1）和主动脉-髂手术假体内漏（n = 1）。我们还发现了3例副肾动脉，2例侧支循环，3例手术主动脉-髂假体。true-FISP评分（25.9 +/- 4.1，中位数27）显著高于Gd-MRA评分（23.9 +/- 3.6，中位数24）（p = 0.003）。True-FISP在显示肠系膜下动脉（评分2.5 +/- 1.1比1.0 +/- 1.4,p < 0.001）和动脉粥样斑块（评分2.5 1.1比1.2 +/- 1.1,p < 0.001）方面具有优势。仅用Gd-MRA显示一条侧支血管。综上所述，true-FISP是一个强大而快速的非屏气序列，可以添加到Gd-MRA中，获得信息增加。2008爱思唯尔爱尔兰有限公司版权所有。
To test true-fast imaging with steady-state precession (true-FISP) added to gadolinium-based MR angiography (Gd-MRA) for imaging abdominal aorta and major abdominal vessels, 35 consecutive patients (age 67 +/- 11 years) with known or suspected abdominal and/or peripheral vascular disease were studied with sagittal and axial 2D true-FISP during free breathing and coronal 3 D fast low-angle shot (FLASH) Gd-MRA (breath-holding, 0.2 mmol/kg of Gd-DOTA at 2 ml/s). We evaluated: suprarenal aorta, celiac trunk, superior mesenteric artery, right renal artery, left renal artery, infrarenal aorta, inferior mesenteric artery, aortic bifurcation/common iliac arteries, lumbar arteries and aortic atheromasia. The possible presence of accessory renal arteries, collateral vasculature and vascular prosthesis/stent was evaluated. A quality four-point score was assigned to each item on both sequences, from 0 (not visible) to 3 (good-to-excel lent image quality) and Wilcoxon test was used. Main diagnoses resulted: normal or atheromasic aorta (n = 25); aortic aneurysm (n = 2); patent aorto-iliac surgical prosthesis (n = 2); patent vascular iliac stent (n = 2); aneurysm of iliac artery (n = 1); patent aortic endovascular prosthesis (n = 1); patent aorto-femural bypass (n = 1) and aorto-iliac surgical prosthesis endoleak (n = 1). We also found three patients with accessory renal arteries, two with collateral circulation, and three with surgical aorto-iliac prosthesis. The score of true-FISP (25.9 +/- 4.1, median 27) was significantly higher (p = 0.003) than that of Gd-MRA (23.9 +/- 3.6, median 24). True-FISP was superior for visualizing inferior mesenteric artery (score 2.5 +/- 1.1 vs. 1.0 +/- 1.4; p < 0.001) and atheromasic plaques (2.5 1.1 vs. 1.2 +/- 1.1; p < 0.001). One collateral vasculature was demonstrated only with Gd-MRA. Summarizing, true-FISP is a power and fast non-breath-hold sequence to be added to Gd-MRA, obtaining an information increase. (C) 2008 Elsevier Ireland Ltd. All rights reserved.