RAPID 3-DIMENSIONAL T1-WEIGHTED MR IMAGING WITH THE MP-RAGE SEQUENCE

被引：122

作者：

MUGLER, JP

BROOKEMAN, JR

机构：

[1] Departments of Radiology and Biomedical Engineering, University of Virginia Health Sciences Center, Charlottesville, Virginia, 22908, Box 190

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1991年 / 1卷 / 05期

关键词：

ARTIFACT; BRAIN; MR STUDIES; IMAGE PROCESSING; MAGNETIC RESONANCE (MR); EXPERIMENTAL; MODEL; MATHEMATICAL; PULSE SEQUENCES; RAPID IMAGING; 3-DIMENSIONAL IMAGING;

D O I：

10.1002/jmri.1880010509

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

The authors investigated the application of three-dimensional (3D) magnetization-prepared rapid gradient-echo (MP-RAGE) imaging to the acquisition of small (32 x 128 x 256) T1-weighted 3D data sets with imaging times of approximately 1 minute. A theoretical model was used to study the contrast behavior of brain tissue. On the basis of these theoretical results, 3D MP-RAGE sequences were implemented on a 1.5-T whole-body imager. Thirty-two-section 3D data sets demonstrating good signal-to-noise ratios and resolution and strong T1-weighted contrast were obtained in 1 minute. Compared with standard short TR/TE spin-echo sequences with the same imaging times and comparable sequence parameters, the 3D MP-RAGE sequence delivered increases of more than 50% in the white matter/gray matter signal difference-to-noise and white matter signal-to-noise ratios, and provided almost twice as many sections. These sequences may find a clinical role in 3D scout imaging and screening and in patients with claustrophobia or trauma.

引用

页码：561 / 567

页数：7

共 12 条

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