Three-dimensional, T1-weighted gradient-echo imaging of the brain with a volumetric interpolated examination

Wetzel, Stephan G., Johnson, Glyn, Tan, Andrew G. S., Cha, Soonmee, Knopp, Edmond A., Lee, Vivian S., Thomasson, David and Rofsky, Neil M. (2002) Three-dimensional, T1-weighted gradient-echo imaging of the brain with a volumetric interpolated examination. American Journal of Neuroradiology, 23 (6). pp. 995-1002. ISSN 1936-959X

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Abstract

BACKGROUND AND PURPOSE: T1-weighted, 3D gradient-echo MR sequences can be optimized for rapid acquisition and improved resolution through asymmetric k-space sampling and interpolation. We compared a volumetric interpolated brain examination (VIBE) sequence with a magnetization-prepared rapid acquisition gradient echo (MP RAGE) sequence and a 2D T1-weighted spin-echo (SE) sequence. METHODS: Thirty consecutive patients known or suspected to have focal brain lesions underwent postcontrast studies (20 mL of gadopentetate dimeglumine) with VIBE, MP RAGE, and 2D T1-weighted SE imaging. Source and 5-mm VIBE and MP RAGE reformations, and 5-mm T1-weighted SE images were compared qualitatively and by using signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). SNRs in a gadolinium-doped water phantom were also measured for all three sequences. RESULTS: On the source images, SNRs for gray matter (GM) and white matter (WM), and CNRs for WM-to-GM and contrast-enhancing lesion-to-GM were slightly, but significantly higher for the VIBE sequence than for the MP RAGE sequence (P

Item Type: Article
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
University of East Anglia > Faculty of Medicine and Health Sciences > Research Groups > Clinical Science and Trials
Depositing User: Pure Connector
Date Deposited: 28 Sep 2015 14:52
Last Modified: 25 Jul 2018 11:06
URI: https://ueaeprints.uea.ac.uk/id/eprint/54437
DOI:

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