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 …

Parallel transmission (pTX) techniques are required to tackle a number of challenges, eg,
the inhomogeneous distribution of the transmit field and elevated specific absorption rate …

Spoke trajectory parallel transmit (pTX) excitation in ultra-high field MRI enables B 1+
inhomogeneities arising from the shortened RF wavelength in biological tissue to be …

Purpose This work proposes a novel RF pulse design for parallel transmit (pTx) systems to
obtain uniform saturation of semisolid magnetization for magnetization transfer (MT) contrast …

A magnitude-least-squares radiofrequency pulse design algorithm is reported which uses
interleaved exact and stochastically-generated inexact updates to escape local minima and …

Abstract Purpose To mitigate B 1+ B _1^+ inhomogeneity at 7T for multi‐channel transmit
arrays using unsupervised deep learning with convolutional neural networks (CNNs) …

Purpose To investigate the effects of using different parallel‐transmit (pTx) head coils and
specific absorption rate (SAR) supervision strategies on pTx pulse design for ultrahigh‐field …

Poor homogeneity of the transmit (B1+) fields in MRI at 7 Tesla may cause regions of low
signal intensity and contrast variations1. Dynamic parallel transmit (pTx) pulses have shown …

Parallel transmission (pTx) is an important technique for reducing transmit field
inhomogeneities at ultrahigh-field (UHF) MRI. pTx typically involves solving an optimization …

While it offers important image quality benefits, Ultra-High Field MRI is particularly sensitive
to RF related artifacts caused by the decreasing wavelength of the B1+ field required to flip …