MRI‐related heating of implants and devices: a review
L Winter, F Seifert, L Zilberti, M Murbach… - Journal of Magnetic …, 2021 - Wiley Online Library
During an MRI scan, the radiofrequency field from the scanner's transmit coil, but also the
switched gradient fields, induce currents in any conductive object in the bore. This makes …
switched gradient fields, induce currents in any conductive object in the bore. This makes …
Parallel transmission for ultrahigh‐field imaging
The development of MRI systems operating at or above 7 T has provided researchers with a
new window into the human body, yielding improved imaging speed, resolution and signal …
new window into the human body, yielding improved imaging speed, resolution and signal …
SAR simulations & safety
TM Fiedler, ME Ladd, AK Bitz - NeuroImage, 2018 - Elsevier
At ultra-high fields, the assessment of radiofrequency (RF) safety presents several new
challenges compared to low-field systems. Multi-channel RF transmit coils in combination …
challenges compared to low-field systems. Multi-channel RF transmit coils in combination …
Numerical simulations of realistic lead trajectories and an experimental verification support the efficacy of parallel radiofrequency transmission to reduce heating of …
CE McElcheran, L Golestanirad, MI Iacono, PS Wei… - Scientific reports, 2019 - nature.com
Patients with deep brain stimulation (DBS) implants may be subject to heating during MRI
due to interaction with excitatory radiofrequency (RF) fields. Parallel RF transmit (pTx) has …
due to interaction with excitatory radiofrequency (RF) fields. Parallel RF transmit (pTx) has …
Improving safety of MRI in patients with deep brain stimulation devices
MRI is a valuable clinical and research tool for patients undergoing deep brain stimulation
(DBS). However, risks associated with imaging DBS devices have led to stringent …
(DBS). However, risks associated with imaging DBS devices have led to stringent …
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 …
Reconfigurable MRI coil technology can substantially reduce RF heating of deep brain stimulation implants: First in-vitro study of RF heating reduction in bilateral DBS …
Patients with deep brain stimulation (DBS) implants can significantly benefit from magnetic
resonance imaging (MRI), however access to MRI is restricted in these patients because of …
resonance imaging (MRI), however access to MRI is restricted in these patients because of …
Feasibility of using linearly polarized rotating birdcage transmitters and close‐fitting receive arrays in MRI to reduce SAR in the vicinity of deep brain simulation …
Purpose MRI of patients with deep brain stimulation (DBS) implants is strictly limited due to
safety concerns, including high levels of local specific absorption rate (SAR) of …
safety concerns, including high levels of local specific absorption rate (SAR) of …
Construction and modeling of a reconfigurable MRI coil for lowering SAR in patients with deep brain stimulation implants
Post-operative MRI of patients with deep brain simulation (DBS) implants is useful to assess
complications and diagnose comorbidities, however more than one third of medical centers …
complications and diagnose comorbidities, however more than one third of medical centers …
A comparative study of RF heating of deep brain stimulation devices in vertical vs. horizontal MRI systems
The majority of studies that assess magnetic resonance imaging (MRI) induced
radiofrequency (RF) heating of the tissue when active electronic implants are present have …
radiofrequency (RF) heating of the tissue when active electronic implants are present have …