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Acceleration of 2D-MR fingerprinting by reducing the number of echoes with increased in-plane resolution: a volunteer study.


ABSTRACT: OBJECTIVE:To compare the absolute values and repeatability of magnetic resonance fingerprinting (MRF) with 3000 and 1500 echoes/slice acquired in 41 s and 20 s (MRF3k and MRF1.5k, respectively). MATERIALS AND METHODS:MRF3k and MRF1.5k scans based on fast imaging with steady precession (FISP) were conducted using a 3 T scanner. Inter-scan agreement and intra-scan repeatability were investigated in 41 and 28 subjects, respectively. Region-of-interest (ROI) analysis was conducted on T1 values of MRF3k by two raters, and their agreement was evaluated using intraclass correlation coefficients (ICCs). Between MRF3k and MRF1.5k, differences in T1 and T2 values and inter-measurement correlation coefficients (CCs) were investigated. Intra-measurement repeatability was evaluated using coefficients of variation (CVs). A p value?

SUBMITTER: Yokota Y 

PROVIDER: S-EPMC7669790 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Acceleration of 2D-MR fingerprinting by reducing the number of echoes with increased in-plane resolution: a volunteer study.

Yokota Yusuke Y   Okada Tomohisa T   Fushimi Yasutaka Y   Yamamoto Akira A   Nakajima Satoshi S   Fujimoto Koji K   Oshima Sonoko S   Koerzdoerfer Gregor G   Nittka Mathias M   Pfeuffer Josef J   Togashi Kaori K  

Magma (New York, N.Y.) 20200404 6


<h4>Objective</h4>To compare the absolute values and repeatability of magnetic resonance fingerprinting (MRF) with 3000 and 1500 echoes/slice acquired in 41 s and 20 s (MRF3k and MRF1.5k, respectively).<h4>Materials and methods</h4>MRF3k and MRF1.5k scans based on fast imaging with steady precession (FISP) were conducted using a 3 T scanner. Inter-scan agreement and intra-scan repeatability were investigated in 41 and 28 subjects, respectively. Region-of-interest (ROI) analysis was conducted on  ...[more]

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