Improved Brain MR Imaging from a Compact, Lightweight 3T Scanner with High-Performance Gradients.
Improved Brain MR Imaging from a Compact, Lightweight 3T Scanner with High-Performance Gradients.
复制标题
DOI：
10.1002/jmri.27812
复制
发表时间：
2022-01
期刊：
影响因子：
--
通讯作者：
Huston J 3rd
中科院分区：
文献类型：
--
作者：
Camerucci E;Campeau NG;Trzasko JD;Gray EM;Bernstein MA;Cogswell PM;Shu Y;Foo TK;Huston J 3rd
自2016年3月以来，一种低冷冻剂、紧凑型3 T（C3 T）MRI扫描仪（具有能够同时实现80 mT/m梯度振幅和700 T/m/s转换速率的高性能梯度）已用于研究患者，但尚未在临床实践中实施。比较使用C3 T系统和传统全身3 T（WB 3 T）扫描仪在5个常用脑成像序列的7个参数中获得的头部MRI检查。有前途。30例患者接受了临床指征的头部MRI。3T; T1 FLAIR、T1 MP-DWI、3D T2 FLAIR、T2 FSE和DWI。所有患者对扫描耐受良好。三位经委员会认证的神经放射科医生采用五点Likert量表，以盲法对C3 T和WB 3 T图像的质量进行比较评分，评分内容包括：信噪比（SNR）、病变显著性、运动伪影、灰/白色物质对比度、小脑叶、敏感性伪影和总体质量。左侧、右侧和双侧Wilcoxon符号秩检验; Fisher方法。p值< 0.05被认为具有统计学显著性。在几乎所有比较中，C3 T系统的性能均优于WB 3 T，除了T1 FLAIR和T1 MP-FLAIR序列的运动伪影，WB 3 T系统被认为更好。当将所有序列组合在一起时，C3 T系统在评价的所有图像质量参数中均优于WB 3 T系统，运动伪影除外（p= 0.13）。C3 T扫描仪为所有序列提供了更好的整体图像质量，并且在所有单独类别中表现更好，除了T1 FLAIR和T1 MP-SPECT上的运动伪影。
A low-cryogen, compact 3T (C3T) MRI scanner with high-performance gradients capable of simultaneously achieving 80 mT/m gradient amplitude and 700 T/m/s slew rate has been in use to study research patients since March 2016 but has not been implemented in the clinical practice. To compare head MRI examinations obtained with the C3T system and a conventional whole-body 3T (WB3T) scanner in seven parameters across five commonly used brain imaging sequences. Prospective. 30 patients with a clinically indicated head MRI. 3T; T1 FLAIR, T1 MP-RAGE, 3D T2 FLAIR, T2 FSE, and DWI. All patients tolerated the scans well. Three board-certified neuroradiologists scored the comparative quality of C3T and WB3T images in blinded fashion using a five-point Likert scale in terms of: signal-to-noise ratio (SNR), lesion conspicuity, motion artifact, gray/white matter contrast, cerebellar folia, susceptibility artifact, and overall quality. Left-sided, right-sided, and two-sided Wilcoxon signed rank test; Fisher’s method. A p value < 0.05 was considered statistically significant. The C3T system performed better than the WB3T in virtually all comparisons, except for motion artifacts for the T1 FLAIR and T1 MP-RAGE sequences, where the WB3T system was deemed better. When combining all sequences together, the C3T system outperformed the WB3T system in all image quality parameters evaluated, except for motion artifact (p= 0.13). The C3T scanner provided better overall image quality for all sequences, and performed better in all individual categories, except for motion artifact on the T1 FLAIR and T1 MP-RAGE.
登录
查看更多内容
影响因子：
3.3
作者：
Brau, Anja C. S.;Beatty, Philip J.;Bammer, Roland
通讯作者：
Bammer, Roland
DOI：
10.2214/ajr.20.22812
发表时间：
2021-03
期刊：
AJR. American journal of roentgenology
影响因子：
--
作者：
Cogswell PM;Trzasko JD;Gray EM;Campeau NG;Rossman PJ;Kang D;Robb F;Stormont RS;Lindsay SA;Bernstein MA;McGee KP;Huston J 3rd
通讯作者：
Huston J 3rd
影响因子：
3.5
作者：
Tao, S.;Trzasko, J. D.;Bernstein, M. A.
通讯作者：
Bernstein, M. A.
影响因子：
3.5
作者：
In MH;Shu Y;Trzasko JD;Yarach U;Kang D;Gray EM;Huston J;Bernstein MA
通讯作者：
Bernstein MA
影响因子：
4.4
作者：
Tan, Ek T.;Lee, Seung-Kyun;Foo, Thomas K. F.
通讯作者：
Foo, Thomas K. F.