In vivo B0 field shimming methods for MRI at 7 T

JP Stockmann, LL Wald - Neuroimage, 2018 - Elsevier
Abstract Functional MRI (fMRI) at 7 T and above provides improved Signal-to-Noise Ratio
and Contrast-to-Noise Ratio compared to 3 T acquisitions. In addition to the beneficial …

B0 magnetic field homogeneity and shimming for in vivo magnetic resonance spectroscopy

C Juchem, RA de Graaf - Analytical biochemistry, 2017 - Elsevier
The homogenization of B 0 conditions is necessary for every magnetic resonance
spectroscopy (MRS) investigation. Its direct consequence is narrow spectral lines, on which …

[HTML][HTML] Enabling ambulatory movement in wearable magnetoencephalography with matrix coil active magnetic shielding

N Holmes, M Rea, RM Hill, J Leggett, LJ Edwards… - NeuroImage, 2023 - Elsevier
The ability to collect high-quality neuroimaging data during ambulatory participant
movement would enable a wealth of neuroscientific paradigms. Wearable …

A 32‐channel combined RF and B0 shim array for 3T brain imaging

JP Stockmann, T Witzel, B Keil… - Magnetic resonance …, 2016 - Wiley Online Library
Purpose We add user‐controllable direct currents (DC) to the individual elements of a 32‐
channel radio‐frequency (RF) receive array to provide B0 shimming ability while preserving …

Dynamic multi-coil shimming of the human brain at 7 T

C Juchem, TW Nixon, S McIntyre, VO Boer… - Journal of magnetic …, 2011 - Elsevier
High quality magnetic field homogenization of the human brain (ie shimming) for MR
imaging and spectroscopy is a demanding task. The susceptibility differences between air …

Dynamic multi-coil technique (DYNAMITE) shimming for echo-planar imaging of the human brain at 7 Tesla

C Juchem, SU Rudrapatna, TW Nixon, RA de Graaf - Neuroimage, 2015 - Elsevier
Gradient-echo echo-planar imaging (EPI) is the primary method of choice in functional MRI
and other methods relying on fast MRI to image brain activation and connectivity. However …

Integrated parallel reception, excitation, and shimming (iPRES)

H Han, AW Song, TK Truong - Magnetic resonance in medicine, 2013 - Wiley Online Library
Purpose: To develop a new concept for a hardware platform that enables integrated parallel
reception, excitation, and shimming. Theory: This concept uses a single coil array rather …

Recent advances in microresonators and supporting instrumentation for electron paramagnetic resonance spectroscopy

N Abhyankar, A Agrawal, J Campbell, T Maly… - Review of Scientific …, 2022 - pubs.aip.org
Electron paramagnetic resonance (EPR) spectroscopy characterizes the magnetic
properties of paramagnetic materials at the atomic and molecular levels. Resonators are an …

Development and implementation of an 84‐channel matrix gradient coil

S Littin, F Jia, KJ Layton, S Kroboth… - Magnetic resonance …, 2018 - Wiley Online Library
Purpose Design, implement, integrate, and characterize a customized coil system that
allows for generating spatial encoding magnetic fields (SEMs) in a highly‐flexible fashion …

Real‐time feedback for spatiotemporal field stabilization in MR systems

Y Duerst, BJ Wilm, BE Dietrich… - Magnetic resonance …, 2015 - Wiley Online Library
Purpose MR imaging and spectroscopy require a highly stable, uniform background field.
The field stability is typically limited by hardware imperfections, external perturbations, or …