Parallel radiofrequency transmission at 3 tesla to improve safety in bilateral implanted wires in a heterogeneous model

CE McElcheran, B Yang, KJT Anderson… - Magnetic resonance …, 2017 - Wiley Online Library
Purpose Elongated implanted conductors can interact with the radiofrequency (RF)
transmission field during MRI, posing safety concerns of excessive heating in patients with …

High efficiency radiofrequency power amplifier module for parallel transmit arrays at 3 Tesla

M Twieg, MA Griswold - Magnetic resonance in medicine, 2017 - Wiley Online Library
Purpose The purpose of this study is to develop an in‐bore radiofrequency (RF) power
amplifier (RFPA) module with high power efficiency and density for use in parallel transmit …

[HTML][HTML] High Efficiency RFPA Module for pTX at 3 T

M Twieg, MA Griswold - Magnetic resonance in medicine, 2017 - ncbi.nlm.nih.gov
Purpose The purpose of this study is to develop an in-bore RF power amplifier (RFPA)
module with high power efficiency and density for use in parallel transmit (pTX) arrays at 3 T …

A 16 channel head-only pTX array using high efficiency in-bore RFPAs at 3T

M Twieg, BB Mehta, S Coppo, J Ruff… - Proc. 25th scientific …, 2017 - archive.ismrm.org
Parallel transmit (pTX) has been proposed as a solution to flip angle inhomogeneity and
SAR at ultrahigh fields, as well as safety hazards with implantable devices. However, pTX …

[图书][B] Parallel radiofrequency transmission for the reduction of heating in deep brain stimulation leads at 3T

C McElcheran - 2017 - search.proquest.com
Abstract Deep Brain Stimulation (DBS) is increasingly used to treat a variety of brain
diseases by sending electrical impulses to deep brain nuclei through long, electrically …

[图书][B] Applications of Gallium Nitride FETs to RF Arrays for Magnetic Resonance Imaging

M Twieg - 2016 - search.proquest.com
Magnetic resonance imaging (MRI) is an imaging technique with incredible utility for medical
applications, along with incredible technical complexity. Two of the primary subsystems of …