7T vs. 4T: RF power, homogeneity, and signal‐to‐noise comparison in head images

By J. T. Vaughan, M. Garwood, C. Collins, Wanzhan Liu, L. DelaBarre, G. Adriany, P. Andersen, H. Merkle, Rainer Goebel, Michael B. Smith and 1 more. Magnetic Resonance in Medicine, 2001

928 citations recorded by the source corpus.

Subfields: Atomic and Molecular Physics, and Optics, Radiology, Nuclear Medicine and Imaging

View Paper: https://www.semanticscholar.org/paper/ee9b16763d9ba5eb527d96c7c27c8f130a4c5288

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In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Analysis of functional image analysis contest (FIAC) data with brainvoyager QX: From single‐subject to cortically aligned group general linear model analysis and self‐organizing group independent component analysis (2006, methodology): “Since the data exhibited spatial intensity inhomogeneities, a correction method [Vaughan et al., 2001] was applied, which estimates a bias ﬁeld by analyzing the change of white matter intensities over space (Fig.”
Multi‐echo fMRI: A review of applications in fMRI denoising and analysis of BOLD signals (2017, methodology): “For these experiments, ASL is currently used, but often ASL is not optimal due to complexity in use and low signal to noise ratio of that technique (Aguirre and Detre, 2012; Wang et al., 2011).”
MP2RAGE, a self bias-field corrected sequence for improved segmentation and T1-mapping at high field (2010, background): “Although transmit and receive B1 fields can be numerically calculated (Vaughan et al., 2001), such simulations require a priori knowledge of the distribution of brain tissues and their conductivity as well as complete characterization of the used RF coils.”
High-field fMRI unveils orientation columns in humans (2008, background): “H igh-field MRI has pushed the level of detail to which submillimeter functional organizations can be mapped with fMRI because of increases in the signal-to-noise ratio (1) and the spatial accuracy of the functional signals (2).”
Multiband Multislice GE-EPI at 7 Tesla, With 16-Fold Acceleration Using Partial Parallel Imaging With Application to High Spatial and Temporal Whole-Brain FMRI (2010, background): “As with conventional PPI, the use of multibanded acquisitions can be implemented at lower magnetic fields such as 3 T, albeit with higher g-factors for an identical coil and sample when compared to 7 T. PPI performance and SNR are highly dependent on the performance of the RF coil.”
9.4T human MRI: Preliminary results (2006, methodology): “The patterns of nonuniformity are similar to those seen in 7T images, but are more severe (7).”