Advancements in gradient system performance for clinical and research MRI

N Gudino, S Littin - Journal of Magnetic Resonance Imaging, 2023 - Wiley Online Library
In magnetic resonance imaging (MRI), spatial field gradients are applied along each axis to
encode the location of the nuclear spin in the frequency domain. During recent years, the …

MaxGIRF: Image reconstruction incorporating concomitant field and gradient impulse response function effects

NG Lee, R Ramasawmy, Y Lim… - Magnetic resonance …, 2022 - Wiley Online Library
Purpose To develop and evaluate an improved strategy for compensating concomitant field
effects in non‐Cartesian MRI at the time of image reconstruction. Theory We present a …

UTE‐SENCEFUL: first results for 3D high‐resolution lung ventilation imaging

L Mendes Pereira, T Wech, AM Weng… - Magnetic resonance …, 2019 - Wiley Online Library
Purpose This study aimed to develop a 3D MRI technique to assess lung ventilation in free‐
breathing and without the administration of contrast agent. Methods A 3D‐UTE sequence …

Rapid acquisition of the 3D MRI gradient impulse response function using a simple phantom measurement

J Rahmer, P Mazurkewitz, P Börnert… - Magnetic resonance in …, 2019 - Wiley Online Library
Purpose To provide a simple tool for rapid measurement of the 3D gradient modulation
transfer function (GMTF) of clinical MRI systems using a phantom. Knowledge of the transfer …

Simple auto‐calibrated gradient delay estimation from few spokes using Radial Intersections (RING)

S Rosenzweig, HCM Holme… - Magnetic resonance in …, 2019 - Wiley Online Library
Purpose To develop a simple and robust tool for the estimation of gradient delays from
highly undersampled radial k‐space data. Theory In radial imaging gradient delays induce …

Trajectory correction based on the gradient impulse response function improves high‐resolution UTE imaging of the musculoskeletal system

S Kronthaler, J Rahmer, P Börnert… - Magnetic …, 2021 - Wiley Online Library
Purpose UTE sequences typically acquire data during the ramping up of the gradient fields,
which makes UTE imaging prone to eddy current and system delay effects. The purpose of …

High‐quality FLORET UTE imaging for clinical translation

MM Willmering, G Krishnamoorthy… - Magnetic …, 2025 - Wiley Online Library
Purpose To develop a robust 3D ultrashort‐TE (UTE) protocol that can reproducibly provide
high‐quality images, assessed by the ability to yield clinically diagnostic images, and is …

Cardiac and respiratory self-gating in radial MRI using an adapted singular spectrum analysis (SSA-FARY)

S Rosenzweig, N Scholand… - IEEE transactions on …, 2020 - ieeexplore.ieee.org
Cardiac Magnetic Resonance Imaging (MRI) is time-consuming and error-prone. To ease
the patient's burden and to increase the efficiency and robustness of cardiac exams, interest …

Cardiac real‐time MRI using a pre‐emphasized spiral acquisition based on the gradient system transfer function

P Eirich, T Wech, JF Heidenreich… - Magnetic resonance …, 2021 - Wiley Online Library
Purpose Segmented Cartesian acquisition in breath hold represents the current gold
standard for cardiac functional MRI. However, it is also associated with long imaging times …

Fast measurement of the gradient system transfer function at 7 T

H Scholten, D Lohr, T Wech… - Magnetic resonance in …, 2023 - Wiley Online Library
Purpose In this work, a new method to determine the gradient system transfer function
(GSTF) with high frequency resolution and high SNR is presented, using fast and simple …