Next-generation MRI scanner designed for ultra-high-resolution human brain imaging at 7 Tesla
To increase granularity in human neuroimaging science, we designed and built a next-
generation 7 Tesla magnetic resonance imaging scanner to reach ultra-high resolution by …
generation 7 Tesla magnetic resonance imaging scanner to reach ultra-high resolution by …
Ultra-high field MRI: parallel-transmit arrays and RF pulse design
SN Williams, P McElhinney… - Physics in Medicine & …, 2023 - iopscience.iop.org
This paper reviews the field of multiple or parallel radiofrequency (RF) transmission for
magnetic resonance imaging (MRI). Currently the use of ultra-high field (UHF) MRI at 7 tesla …
magnetic resonance imaging (MRI). Currently the use of ultra-high field (UHF) MRI at 7 tesla …
A review of parallel transmit arrays for ultra-high field MR imaging
Parallel transmission (pTX) techniques are required to tackle a number of challenges, eg,
the inhomogeneous distribution of the transmit field and elevated specific absorption rate …
the inhomogeneous distribution of the transmit field and elevated specific absorption rate …
Deep learning‐based local SAR prediction using B1 maps and structural MRI of the head for parallel transmission at 7 T
Purpose To predict subject‐specific local specific absorption rate (SAR) distributions of the
human head for parallel transmission (pTx) systems at 7 T. Theory and methods …
human head for parallel transmission (pTx) systems at 7 T. Theory and methods …
Improved 1H body imaging at 10.5 T: Validation and VOP‐enabled imaging in vivo with a 16‐channel transceiver dipole array
Purpose To increase the RF coil performance and RF management for body imaging at 10.5
T by validating and evaluating a high‐density 16‐channel transceiver array, implementing …
T by validating and evaluating a high‐density 16‐channel transceiver array, implementing …
Tier‐based formalism for safety assessment of custom‐built radio‐frequency transmit coils
BR Steensma, A Sadeghi‐Tarakameh… - NMR in …, 2023 - Wiley Online Library
The purpose of this work is to propose a tier‐based formalism for safety assessment of
custom‐built radio‐frequency (RF) coils that balances validation effort with the effort put in …
custom‐built radio‐frequency (RF) coils that balances validation effort with the effort put in …
Radiofrequency safety of high permittivity pads in MRI—Impact of insulation material
Purpose High permittivity dielectric pads are known to be effective for tailoring the RF field
and improving image quality in high field MRI. Despite a number of studies reporting benign …
and improving image quality in high field MRI. Despite a number of studies reporting benign …
Triple‐tuned birdcage and single‐tuned dipole array for quadri‐nuclear head MRI at 7 T
Purpose The purpose of this work was to design and build a coil for quadri‐nuclear MRI of
the human brain at 7 T. Methods We built a transmit/receive triple‐tuned (45.6 MHz for 2^ 2 …
the human brain at 7 T. Methods We built a transmit/receive triple‐tuned (45.6 MHz for 2^ 2 …
The restricted SAR protocol: A method to assess MRI coil prototypes in an unconditionally safe manner
N Dudysheva, F Mauconduit… - Magnetic …, 2024 - Wiley Online Library
Purpose Testing an RF coil prototype on subjects involves laborious verifications to ensure
its safety. In particular, it requires preliminary electromagnetic simulations and their …
its safety. In particular, it requires preliminary electromagnetic simulations and their …
Local and whole‐body SAR in UHF body imaging: Implications for SAR matrix compression
Purpose Transmit arrays for body imaging have characteristics of both volume and local
transmit coils. This study evaluates two specific absorption rate (SAR) aspects, local and …
transmit coils. This study evaluates two specific absorption rate (SAR) aspects, local and …