Systematic dimensional analysis of the scaling relationship for gradient and shim coil design parameters
Purpose To demonstrate systematic, linear algebra–based, dimensional analysis to derive a
scaling relationship among the design parameters of MRI gradient and harmonic shim coils …
scaling relationship among the design parameters of MRI gradient and harmonic shim coils …
Orthopedic implants affect the electric field induced by switching gradients in MRI
Purpose To investigate whether the risk of peripheral nerve stimulation increases in the
presence of bulky metallic prostheses implanted in a patient's body. Methods A …
presence of bulky metallic prostheses implanted in a patient's body. Methods A …
Improved Resting-State Functional MRI Using Multi-Echo Echo-Planar Imaging on a Compact 3T MRI Scanner with High-Performance Gradients
In blood-oxygen-level-dependent (BOLD)-based resting-state functional (RS-fMRI) studies,
usage of multi-echo echo-planar-imaging (ME-EPI) is limited due to unacceptable late echo …
usage of multi-echo echo-planar-imaging (ME-EPI) is limited due to unacceptable late echo …
Average SAR prediction, validation, and evaluation for a compact MR scanner head-sized RF coil
A recently developed compact 3 T (C3T) MRI scanner with high performance gradients [1, 2]
has a dedicated radiofrequency (RF) transmit coil that exposes only the head, neck and a …
has a dedicated radiofrequency (RF) transmit coil that exposes only the head, neck and a …
Evaluation of a compact 3 T MRI scanner for patients with implanted devices
LJB Speltz, Y Shu, RE Watson, JD Trzasko… - Magnetic Resonance …, 2023 - Elsevier
Access to high-quality MR exams is severely limited for patients with some implanted
devices due to labeled MR safety conditions, but small-bore systems can overcome this …
devices due to labeled MR safety conditions, but small-bore systems can overcome this …
The benefit of high-performance gradients on echo planar imaging for BOLD-based resting-state functional MRI
Improved gradient performance in an MRI system reduces distortion in echo planar imaging
(EPI), which has been a key imaging method for functional studies. A lightweight, low …
(EPI), which has been a key imaging method for functional studies. A lightweight, low …
Enhanced clinical task-based fMRI metrics through locally low-rank denoising of complex-valued data
NK Meyer, D Kang, DF Black… - The Neuroradiology …, 2023 - journals.sagepub.com
Objective This study investigates a locally low-rank (LLR) denoising algorithm applied to
source images from a clinical task-based functional MRI (fMRI) exam before post-processing …
source images from a clinical task-based functional MRI (fMRI) exam before post-processing …
[HTML][HTML] Locally Low-Rank Denoising of Multi-Echo Functional MRI Data With Application in Resting-State Analysis
Objectives: Locally low-rank (LLR) denoising of functional magnetic resonance imaging
(fMRI) time series image data is extended to multi-echo (ME) data. The proposed method …
(fMRI) time series image data is extended to multi-echo (ME) data. The proposed method …
Improved Brain MR Imaging from a Compact, Lightweight 3T Scanner with High‐Performance Gradients
Background A low‐cryogen, compact 3T (C3T) MRI scanner with high‐performance
gradients capable of simultaneously achieving 80 mT/m gradient amplitude and 700 …
gradients capable of simultaneously achieving 80 mT/m gradient amplitude and 700 …
Calibration of concomitant field offsets using phase contrast MRI for asymmetric gradient coils
Purpose Asymmetric gradient coils introduce zeroth‐and first‐order concomitant field terms,
in addition to higher‐order terms common to both asymmetric and symmetric gradients …
in addition to higher‐order terms common to both asymmetric and symmetric gradients …