Can a multiphasic contrast-enhanced three-dimensional fast spoiled gradient-recalled echo sequence be sufficient for liver MR imaging?
Can a multiphasic contrast-enhanced three-dimensional fast spoiled gradient-recalled echo sequence be sufficient for liver MR imaging?
复制标题
多相对比增强三维快速破坏梯度回忆回波序列足以用于肝脏 MR 成像吗？
DOI：
10.2214/ajr.178.2.1780335
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
King C. Li
中科院分区：
文献类型：
--
作者：
C. Coulam;F. Chan;King C. Li
客观化
本研究的目的是通过对比多相Gd增强3D快速破坏梯度回声序列、T1加权和脂肪抑制快速自旋回波T2加权序列在肝脏综合评估中的准确性，来确定单独使用多相Gd增强三维快速破坏梯度回波序列检测和定性肝局灶性病变的准确性。
材料和方法
对61例患者的腹部MRI检查进行了回顾性分析。所有MR检查包括平扫自旋回波T1加权序列、平扫脂肪抑制快速自旋回波T2加权序列和连续屏气过程中获得的多相Gd增强3D快速破坏梯度回声序列。首先使用3D破坏的梯度回波序列评估肝脏的局灶性病变，然后在单独的检查中使用T1和T2加权序列。记录每个序列在病变检测和表征中的有用性。病变检测和定性的金标准是所有三种成像序列一起审查。
结果
共发现114个肝局灶性病变，其中54个为单纯性囊性病变。仅3D破坏的梯度回波序列就检出了114个病变中的92个(81%)，T1和T2加权序列检出了114个病变中的95个(83%)。在60个非单纯性囊性病变中，仅3D破坏梯度回声序列就检出了58个(97%)，T1和T2加权序列检出了51个(85%)。在24%的病变患者中，T1和T2加权序列被发现有助于病变的定性。
结论
一种多相增强3D快速破坏梯度回声序列单独检测大多数临床相关的肝局灶性病变。使用平扫T1和T2加权序列的额外肝脏检查有助于病变的定性，但仅极小地提高了检出率。
OBJECTIVE
The purpose of this study was to determine the accuracy of a multiphasic gadolinium-enhanced three-dimensional (3D) fast spoiled gradient-recalled echo sequence alone in the detection and characterization of focal liver lesions compared with a comprehensive liver evaluation using multiphasic gadolinium-enhanced 3D fast spoiled gradient-recalled echo, T1-weighted, and fat-suppressed fast spin-echo T2-weighted sequences.
MATERIALS AND METHODS
A retrospective review of abdominal MR imaging examinations in 61 patients was performed. All MR examinations included unenhanced spin-echo T1-weighted, unenhanced fat-suppressed fast spin-echo T2-weighted, and multiphasic gadolinium-enhanced 3D fast spoiled gradient-recalled echo sequences obtained during successive breath-holds. The liver was evaluated for focal lesions first with the 3D spoiled gradient-recalled echo sequences and then, during a separate sitting, with the T1- and T2-weighted sequences. The usefulness of each sequence in the detection and characterization of lesions was recorded. The gold standard for lesion detection and characterization was all three imaging sequences reviewed together.
RESULTS
A total of 114 focal liver lesions were identified, 54 of which were simple cysts. The 3D spoiled gradient-recalled echo sequence alone detected 92 (81%) of the 114 lesions, and the T1- and T2-weighted sequences detected 95 (83%) of the 114 lesions. Of the 60 lesions that were not simple cysts, the 3D spoiled gradient-recalled echo sequence alone detected 58 (97%), and T1- and T2-weighted sequences detected 51 (85%). In 24% of the patients with lesions, the T1- and T2-weighted sequences were found to be helpful for the characterization of lesions.
CONCLUSION
A multiphasic contrast-enhanced 3D fast spoiled gradient-recalled echo sequence alone detects most of the clinically relevant focal liver lesions. Additional liver examination using both unenhanced T1- and T2-weighted sequences is helpful for lesion characterization but increases the detection rate only minimally.
部分脂肪饱和对比增强三维磁共振血管造影与非脂肪饱和和传统脂肪饱和磁共振血管造影的比较。
DOI：
10.1148/radiology.216.1.r00jl04298
发表时间：
2000
期刊：
Radiology.
影响因子：
--
作者：
Hilfiker,PR;Herfkens,RJ;Heiss,SG;Alley,MT;Fleischmann,D;Pelc,NJ
通讯作者：
Pelc,NJ
超快对比增强三维 MR 血管造影：最先进的技术。
DOI：
10.1148/radiographics.18.2.9536477
发表时间：
1998
期刊：
Radiographics : a review publication of the Radiological Society of North America, Inc.
影响因子：
--
作者：
Alley,MT;Shifrin,RY;Pelc,NJ;Herfkens,RJ
通讯作者：
Herfkens,RJ