[HTML][HTML] MP-PCA denoising of fMRI time-series data can lead to artificial activation “spreading”

FF Fernandes, JL Olesen, SN Jespersen, N Shemesh - NeuroImage, 2023 - Elsevier
MP-PCA denoising has become the method of choice for denoising MRI data since it
provides an objective threshold to separate the signal components from unwanted thermal …

Feasibility of accelerated prostate diffusion-weighted imaging on 0.55 T MRI enabled with random matrix theory denoising

G Lemberskiy, H Chandarana, M Bruno… - Investigative …, 2023 - journals.lww.com
Methods Twenty-one volunteers and 2 prostate cancer patients were imaged with a 6-
channel pelvic surface array coil and an 18-channel spine array on a prototype 0.55 T …

Volume electron microscopy in injured rat brain validates white matter microstructure metrics from diffusion MRI

R Coronado-Leija, A Abdollahzadeh, HH Lee… - Imaging …, 2024 - direct.mit.edu
Biophysical modeling of diffusion MRI (dMRI) offers the exciting potential of bridging the gap
between the macroscopic MRI resolution and microscopic cellular features, effectively …

Noise mapping and removal in complex-valued multi-channel MRI via optimal shrinkage of singular values

KM Huynh, WT Chang, SH Chung, Y Chen… - … Conference on Medical …, 2021 - Springer
In magnetic resonance imaging (MRI), noise is a limiting factor for higher spatial resolution
and a major cause of prolonged scan time, owing to the need for repeated scans. Improving …

[HTML][HTML] Optimal shrinkage denoising breaks the noise floor in high-resolution diffusion MRI

K Huynh, WT Chang, Y Wu, PT Yap - Patterns, 2024 - cell.com
The spatial resolution attainable in diffusion magnetic resonance (MR) imaging is inherently
limited by noise. The weaker signal associated with a smaller voxel size, especially at a high …

Feasibility of white matter standard model parameter estimation in clinical settings

S Coelho, SH Baete, G Lemberskiy… - Proceedings of the …, 2021 - archive.ismrm.org
Robust parameter estimation of the Standard Model (SM) for diffusion in white matter has
been elusive due to intrinsic model degeneracies and insufficient measurements. To design …

Random Matrix Theory reconstruction for T1 quantification on a field-cycling scanner for B0 ranging between 2-200mT

G Lemberskiy, V Mallikourti, DS Novikov, LM Broche - archive.ismrm.org
We showcase high SNR T1 maps over a range of low field strengths on a stroke patient
imaged using a field-cycling imaging scanner (FCI), an MR system capable of varying B0 …