Highly‐accelerated Bloch‐Siegert mapping using joint autocalibrated parallel image reconstruction

A Sharma, S Tadanki, M Jankiewicz… - Magnetic Resonance …, 2014 - Wiley Online Library
Purpose To reconstruct accurate single‐and multichannel Bloch–Siegert transmit
radiofrequency () field maps from highly accelerated data. Theory and Methods The …

Four dimensional spectral‐spatial fat saturation pulse design

F Zhao, JF Nielsen, DC Noll - Magnetic resonance in medicine, 2014 - Wiley Online Library
Purpose The conventional spectrally selective fat saturation pulse may perform poorly with
inhomogeneous amplitude of static (polarizing) field (B0) and/or amplitude of (excitation) …

An eight-channel T/R head coil for parallel transmit MRI at 3T using ultra-low output impedance amplifiers

KL Moody, NA Hollingsworth, F Zhao, JF Nielsen… - Journal of Magnetic …, 2014 - Elsevier
Parallel transmit is an emerging technology to address the technical challenges associated
with MR imaging at high field strengths. When developing arrays for parallel transmit …

Regularized Estimation of Magnitude and Phase of Multi-Coil Field Via Bloch–Siegert Mapping and Coil Combination Optimizations

F Zhao, JA Fessler, SM Wright… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
Parallel excitation requires fast and accurate B1 map estimation. Bloch-Siegert (BS) B1
mapping is very fast and accurate over a large dynamic range. When applied to multi-coil …

Simultaneous fat saturation and magnetization transfer contrast imaging with steady‐state incoherent sequences

F Zhao, JF Nielsen, SD Swanson… - Magnetic resonance …, 2015 - Wiley Online Library
Purpose This work combines an n‐dimensional fat sat (uration) radiofrequency (RF) pulse
with steady‐state incoherent (SSI) pulse sequences, eg, spoiled gradient‐echo sequence, to …

Methods for MRI RF Pulse Design and Image Reconstruction.

F Zhao - 2014 - deepblue.lib.umich.edu
This thesis describes methods to improve magnetic resonance imaging (MRI) reconstruction
and system calibration, namely, B1 field mapping which is to measure the spatial distribution …

Optimized linear combinations of channels for complex multiple-coil B1 field estimation with Bloch-Siegert B1 mapping in MRI

F Zhao, JA Fessler, SM Wright… - 2013 IEEE 10th …, 2013 - ieeexplore.ieee.org
Bloch-Siegert B 1 mapping for multiple-channel parallel excitation systems usually produces
noisy estimates in low intensity regions. Methods that use linear combinations of multiple …

Eight-Channel Head Array and Control System for Parallel Transmit/Receive Magnetic Resonance Imaging

K Moody - 2014 - oaktrust.library.tamu.edu
Interest in magnetic resonance imaging (MRI) at high fields strengths (3 Tesla and above) is
driven by the associated improvements in signal-to-noise ratio and spectral resolution. In …

Highly-accelerated Bloch-Siegert.

A Sharma, S Tadanki, M Jankiewicz… - Magnetic …, 2014 - search.ebscohost.com
Highlyaccelerated BlochSiegert |B1+| mapping using joint autocalibrated parallel image
reconstruction Page 1 Magnetic Resonance in Medicine 71:1470–1477 (2014) Highly-Accelerated …

Transmit Radio-Frequency Field Mapping In High Field Magnetic Resonance Imaging

A Sharma - 2013 - ir.vanderbilt.edu
A fast approach to reconstruct transmit RF field (| B1+|) maps in high field parallel Magnetic
Resonance Imaging is presented in this thesis. First the concepts of parallel imaging …