output
20152023
most citedAdvancing machine learning for MR image reconstruction with an open competition: Overview of the 2019 fastMRI challenge

267 citations

Showing physics.med-phShow all

10 papers · 1 filter

physics.med-ph2023★ 17 cited

Unconstrained quantitative magnetization transfer imaging: disentangling T1 of the free and semi-solid spin pools

Jakob Assländer, Andrew Mao, Elisa Marchetto +5

Since the inception of magnetization transfer (MT) imaging, it has been widely assumed that Henkelman's two spin pools have similar longitudinal relaxation times, which motivated m…

physics.med-ph2022★ 13 cited

Rapid quantitative magnetization transfer imaging: utilizing the hybrid state and the generalized Bloch model

Jakob Assländer, Cem Gultekin, Andrew Mao +7

Purpose: To explore efficient encoding schemes for quantitative magnetization transfer (qMT) imaging with few constraints on model Theory and Methods: We combine two recently propo…

physics.med-ph2021★ 29 cited

Generalized Bloch model: a theory for pulsed magnetization transfer

Jakob Assländer, Cem Gultekin, Sebastian Flassbeck +2

Purpose: The paper introduces a classical model to describe the dynamics of large spin-1/2 ensembles associated with nuclei bound in large molecule structures, commonly referred to…

physics.med-ph2020★ 13 cited

Optimization of MR Fingerprinting for Free-Breathing Quantitative Abdominal Imaging

Max H. C. van Riel, Zidan Yu, Shota Hodono +4

In this work, we propose a free-breathing magnetic resonance fingerprinting method that can be used to obtain -robust quantitative maps of the abdomen in a clinically accept…

physics.med-ph2020★ 126 cited

In vivo observation and biophysical interpretation of time-dependent diffusion in human cortical gray matter

Hong-Hsi Lee, Antonios Papaioannou, Dmitry S. Novikov +1

The dependence of the diffusion MRI signal on the diffusion time is a hallmark of tissue microstructure at the scale of the diffusion length. Here we measure the time-dependenc…

physics.med-ph2019★ 112 cited

A time-dependent diffusion MRI signature of axon caliber variations and beading

Hong-Hsi Lee, Antonios Papaioannou, Sung-Lyoung Kim +2

MRI provides a unique non-invasive window into the brain, yet is limited to millimeter resolution, orders of magnitude coarser than cell dimensions. Here we show that diffusion MRI…

physics.med-ph2018★ 44 cited

Hybrid-State Free Precession in Nuclear Magnetic Resonance

Jakob Assländer, Dmitry S. Novikov, Riccardo Lattanzi +2

The dynamics of large spin-1/2 ensembles in the presence of a varying magnetic field are commonly described by the Bloch equation. Most magnetic field variations result in unintuit…

physics.med-ph2018★ 9 cited

Low Rank plus Sparse Decomposition of ODFs for Improved Detection of Group-level Differences and Variable Correlations in White Matter

Steven H. Baete, Jingyun Chen, Ying-Chia Lin +3

A novel approach is presented for group statistical analysis of diffusion weighted MRI datasets through voxelwise Orientation Distribution Functions (ODF). Recent advances in MRI a…

physics.med-ph2018★ 41 cited

Multicompartment Magnetic Resonance Fingerprinting

Sunli Tang, Carlos Fernandez-Granda, Sylvain Lannuzel +5

Magnetic resonance fingerprinting (MRF) is a technique for quantitative estimation of spin-relaxation parameters from magnetic-resonance data. Most current MRF approaches assume th…

physics.med-ph2017★ 35 cited

Optimized Quantification of Spin Relaxation Times in the Hybrid State

Jakob Assländer, Riccardo Lattanzi, Daniel K Sodickson +1

Purpose: The analysis of optimized spin ensemble trajectories for relaxometry in the hybrid state. Methods: First, we constructed visual representations to elucidate the differenti…