Development of a symmetric echo planar imaging framework for clinical translation of rapid dynamic hyperpolarized 13C imaging

JW Gordon, DB Vigneron… - Magnetic resonance in …, 2017 - Wiley Online Library
Purpose To develop symmetric echo planar imaging (EPI) and a reference scan framework
for hyperpolarized 13C metabolic imaging. Methods Symmetric, ramp‐sampled EPI with …

Hyperpolarized 13C MRI data acquisition and analysis in prostate and brain at University of California, San Francisco

JC Crane, JW Gordon, HY Chen, AW Autry… - NMR in …, 2021 - Wiley Online Library
Based on the expanding set of applications for hyperpolarized carbon‐13 (HP‐13C) MRI,
this work aims to communicate standardized methodology implemented at the University of …

Optimizing flip angles for metabolic rate estimation in hyperpolarized carbon-13 MRI

J Maidens, JW Gordon, M Arcak… - IEEE transactions on …, 2016 - ieeexplore.ieee.org
Hyperpolarized carbon-13 magnetic resonance imaging has enabled the real-time
observation of perfusion and metabolism in vivo. These experiments typically aim to …

Effects of excitation angle strategy on quantitative analysis of hyperpolarized pyruvate

CM Walker, D Fuentes, PEZ Larson… - Magnetic resonance …, 2019 - Wiley Online Library
Purpose Various excitation strategies have been proposed for dynamic imaging of
hyperpolarized agents such as [1‐13C]‐pyruvate, but the impact of these strategies on …

Towards a 'resolution limit'for DW‐MRI tumor microstructural models: a simulation study investigating the feasibility of distinguishing between microstructural changes

DJ McHugh, PL Hubbard Cristinacce… - Magnetic resonance …, 2019 - Wiley Online Library
Purpose To determine the feasibility of extracting sufficiently precise estimates of cell radius,
R, and intracellular volume fraction, fi, from DW‐MRI data in order to distinguish between …

Parallel dynamic programming for optimal experiment design in nonlinear systems

J Maidens, A Packard, M Arcak - 2016 IEEE 55th Conference …, 2016 - ieeexplore.ieee.org
We present a method of computing optimal input trajectories for parameter estimation in
nonlinear dynamical systems using dynamic programming. In contrast with previously …

Mutual-information based optimal experimental design for hyperpolarized C-pyruvate MRI

PK Jha, C Walker, D Mitchell, JT Oden… - Scientific reports, 2023 - nature.com
A key parameter of interest recovered from hyperpolarized (HP) MRI measurements is the
apparent pyruvate-to-lactate exchange rate, k PL, for measuring tumor metabolism. This …

Semidefinite relaxations in optimal experiment design with application to substrate injection for hyperpolarized MRI

J Maidens, M Arcak - 2016 American Control Conference (ACC), 2016 - ieeexplore.ieee.org
We consider the problem of optimal input design for estimating uncertain parameters in a
discrete-time linear state space model, subject to simultaneous amplitude and ℓ 1/ℓ 2-norm …

Symmetry reduction for dynamic programming and application to MRI

J Maidens, A Barrau, S Bonnabel… - 2017 American Control …, 2017 - ieeexplore.ieee.org
We present a method of exploiting symmetries of discrete-time optimal control problems to
reduce the dimensionality of dynamic programming iterations. The results are derived for …

[图书][B] Optimal control for learning with applications in dynamic MRI

JN Maidens - 2017 - search.proquest.com
Unknown parameters in models of dynamical systems can be learned reliably only when the
system is excited such that the measured output data is informative. Given a statistical model …