Improved Brain MR Imaging from a Compact, Lightweight 3T Scanner with High‐Performance Gradients

Background 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/second slew rate has been in use to study research patients since March 2016 but has not been implemented in the clinical practice. Purpo...

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Bibliographic Details
Published in:Journal of magnetic resonance imaging 2022-01, Vol.55 (1), p.166-175
Main Authors: Camerucci, Emanuele, Campeau, Norbert G., Trzasko, Joshua D., Gray, Erin M., Bernstein, Matt A., Cogswell, Petrice M., Shu, Yunhong, Foo, Thomas K., Huston, John
Format: Article
Language:English
Subjects:
3T
Brain
Brain - diagnostic imaging
Cerebellum
Conspicuity
Gray Matter
Humans
Image quality
Magnetic Resonance Imaging
Medical imaging
MRI
Neuroimaging
Parameters
Patients
Prospective Studies
Rank tests
Scanners
Sequences
Slew rate
Statistical analysis
Statistical tests
Substantia alba
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Summary:Background 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/second slew rate has been in use to study research patients since March 2016 but has not been implemented in the clinical practice. Purpose 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. Study Type Prospective. Subjects Thirty patients with a clinically indicated head MRI. Sequence  3T; T1 FLAIR, T1 MP‐RAGE, 3D T2 FLAIR, T2 FSE, and DWI. Assessment 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, lesion conspicuity, motion artifact, gray/white matter contrast, cerebellar folia, susceptibility artifact, and overall quality. Statistical Test Left‐sided, right‐sided, and two‐sided Wilcoxon signed rank test; Fisher's method. A P value
ISSN:1053-1807
1522-2586
DOI:10.1002/jmri.27812