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Fast Electromagnetic Analysis of MRI Transmit RF Coils Based on Accelerated Integral Equation Methods
A fast frequency domain full-wave electromagnetic simulation method is introduced for the analysis of MRI coils loaded with the realistic human body models, which provides a fast, yet comprehensive, analysis of coil designs, including the port S-parameters and the electromagnetic field distribution within the inhomogeneous body. Expand
Transcranial focused ultrasound for BOLD fMRI signal modulation in humans
An examination of the pairing of tFUS and blood oxygen level dependent (BOLD) functional MRI (fMRI) in humans is presented here. Expand
Parallel transmit pulse design for patients with deep brain stimulation implants
This study presents a parallel transmit (pTx) strategy that can be used to safely scan patients with deep brain stimulation (DBS) implants and shows promise in terms of patient safety. Expand
Reduction of implant RF heating through modification of transmit coil electric field
The transmit field was modified to reduce RF heating of implants and obtain uniform transmit sensitivity, and alternative methods to design implant‐friendly RF coils with optimized electromagnetic fields and reduced whole‐volume average specific absorption rate are proposed. Expand
Miniaturized fiber‐optic transmission system for MRI signals
The Miniature Fiber‐Optic Transmission (FOT) System was developed and it is believed that this design will reduce the cabling problems of arrays and enable placement of internal coils into body cavities with no safety hazard to the patient, such as electrical shock or burns. Expand
Toward imaging the body at 10.5 tesla
To explore the potential of performing body imaging at 10.5 Tesla (T) compared with 7.0T through evaluating the transmit/receive performance of similarly configured dipole antenna arrays, a large number of experiments have been conducted on a single chip. Expand
Reduction of the radiofrequency heating of metallic devices using a dual‐drive birdcage coil
In this work, it is demonstrated that a dual‐drive birdcage coil can be used to reduce the radiofrequency heating of metallic devices during magnetic resonance imaging. By controlling the excitationExpand
First in‐vivo human imaging at 10.5T: Imaging the body at 447 MHz
To investigate the feasibility of imaging the human torso and to evaluate the performance of several radiofrequency (RF) management strategies at 10.5T, a state-of-the-art imaging system is used. Expand
In vivo human head MRI at 10.5T: A radiofrequency safety study and preliminary imaging results
The purpose of this study is to safely acquire the first human head images at 10.5T, and to demonstrate the ability of the Imager to characterize the structure of the head at room temperature. Expand
A simple geometric analysis method for measuring and mitigating RF induced currents on Deep Brain Stimulation leads by multichannel transmission/reception
A relatively fast method can be used to calculate implant friendly excitation, reducing image artifacts as well as the temperature around the DBS electrodes, and when combined with a variety of MR sequences, can improve the image quality and patient safety in clinical imaging scenarios. Expand