Reducing SAR in parallel excitation using variable-density spirals: a simulation-based study.

TL;DR: To develop a robust technique for detecting blood oxygenation level‐dependent (BOLD) contrast in the human breast and to evaluate the signal in healthy and malignant breast.

TL;DR: To evaluate the reproducibility of presurgical functional MRI (fMRI) language mapping based on test–retest scans, comparing traditional activation t‐maps to relative activation maps normalized by activation mapping as percentage of local excitation (AMPLE).

TL;DR: This review article focuses on the safety of pTx that is improved by using intersubject variability analysis, proactively managing pTx and temperature-based pTx approaches that remove the necessity of time-consuming calibrations necessary for successful pTx.

TL;DR: Results of numerical simulations and phantom experiments show that the global specific absorption rate during parallel transmission decreases whenElectric field interactions are incorporated into pulse design optimization, and knowledge of electric field interactions enables robust prediction of the net power delivered to the sample or subject by parallel radiofrequency pulses before they are played out on a scanner.

TL;DR: Theoretical and experimental results are presented that establish the value of parallel excitation with a transmit coil array in accelerating excitation and managing RF power deposition and suggest that by exploiting the localization characteristics of the coils, an orchestrated play of shorter RF pulses can achieve desired excitation profiles faster without adding strains to gradients.

TL;DR: Using this analysis, it is shown how to design inherently refocused selective excitation pulses in one and two dimensions using a small-tip model, but holds well for 90° tip angles.

TL;DR: A tool for accelerating iterative reconstruction of field-corrected MR images: a novel time-segmented approximation to the MR signal equation that uses a min-max formulation to derive the temporal interpolator.

TL;DR: An approach that is formulated as a quadratic optimization problem in the spatial domain and allows the use of arbitrary k‐space trajectories is presented, which allows for the specification of a region of interest (ROI), which improves excitation accuracy at high speedup factors.