Advanced MRI Techniques and Applications

Validation of a new coil array tailored for dog functional magnetic resonance imaging (fMRI) studies

The paper validates a new coil array for dog fMRI, showing improved signal-to-noise ratio compared to human knee coils in structural and functional imaging.

Empirical Transmit Field Bias Correction of T1w/T2w Myelin Maps

This paper introduces two empirical methods to correct B1+ transmit field biases in T1w/T2w myelin maps, improving their accuracy for neuroanatomical and statistical analyses.

Along-tract quantification of resting-state BOLD hemodynamic response functions in white matter

The paper quantifies resting-state BOLD hemodynamic response functions (HRF) in white matter, showing significant differences from gray matter and variation along WM pathways.

31P Transversal Relaxation Times and Metabolite Concentrations in the Human Brain at 9.4T

The paper demonstrates a method to estimate 31P transversal relaxation times and metabolite concentrations in the human brain at 9.4T, finding T2 values and pH levels consistent with literature.

Phenotypic and genetic associations of quantitative magnetic susceptibility in UK Biobank brain imaging

The paper develops a QSM pipeline to analyze brain magnetic susceptibility in UK Biobank data, finding associations with iron, disease, and genetic variants.

Real-time motion monitoring improves functional MRI data quality in infants

This study shows that real-time motion monitoring with FIRMM software improves the quality and usability of fMRI data in infants by reducing motion artifacts.

A deep learning-based multisite neuroimage harmonization framework established with traveling-subject dataset

This paper introduces a deep learning framework to harmonize multisite neuroimaging data by removing site effects while preserving biological features, showing improved performance over traditional methods.

Early detection of cerebrovascular pathology and protective antiviral immunity by MRI

This study uses MRI to detect early cerebrovascular pathology and track antiviral T cells in a murine model of CNS infection.

Non-invasive assessment of normal and impaired iron homeostasis in living human brains.

This paper introduces an MRI technique to assess iron homeostasis in living human brains, showing it varies with age and disease states.

Modeling the hemodynamic response function using EEG-fMRI data during eyes-open resting-state conditions and motor task execution

This paper models the hemodynamic response function using EEG-fMRI data during resting-state and motor tasks, finding frequency-specific and region-specific contributions to BOLD signal variance.

Imaging of the pial arterial vasculature of the human brain in vivo using high-resolution 7T time-of-flight angiography

This study demonstrates that high-resolution 7T time-of-flight MRI can image pial arteries in vivo, showing that resolution, not blood flow speed, limits visualization of these vessels.

Changes in prefrontal GABA and glutamate through adolescence supports excitation/inhibition balance

This study uses MRI to track changes in GABA and glutamate levels in the prefrontal cortex across adolescence, finding increased balance between these neurotransmitters.

Rapid Parameter Estimation for Selective Inversion Recovery Myelin Imaging using an Open-Source Julia Toolkit

This paper introduces a Julia-based toolkit for rapid and accurate parameter estimation in SIR MRI, achieving a 20-fold speedup over MATLAB.

Non-linear frequency-dependence of neurovascular coupling in the cerebellar cortex implies vasodilation-vasoconstriction competition

The paper investigates neurovascular coupling in the cerebellar cortex and finds non-linear frequency dependence due to competition between vasodilation and vasoconstriction pathways.

Video-evoked fMRI BOLD responses are highly consistent across different data acquisition sites

This study shows video-evoked fMRI BOLD responses are consistent across different data acquisition sites, both for matched and unmatched datasets.

A library for fMRI real-time processing systems in python (RTPSpy) with comprehensive online noise reduction, fast and accurate anatomical image processing, and online processing simulation

Choroid plexus tissue perfusion and secretory function in rats measured by non-invasive MRI reveal significant effects of anesthesia

This study uses non-invasive MRI to measure choroid plexus perfusion and secretory function in rats, finding that anesthesia affects perfusion but not secretory function.

Perception affects the brain's metabolic response to sensory stimulation

The paper shows that perceived and unperceived visual stimuli with similar BOLD-fMRI responses have distinct neurometabolic profiles in V1, with lactate and glutamate accumulation only during perception.

Age-related differences in GABA: Impact of analysis technique

This study examines how different analysis techniques affect age-related differences in GABA concentrations, finding that tissue composition significantly influences results.

Unsupervised physiological noise correction of fMRI data using phase and magnitude information (PREPAIR)

PREPAIR corrects physiological noise in fMRI data using phase and magnitude information, outperforming existing methods without external recordings.

Test-retest reproducibility of in vivo magnetization transfer ratio and saturation index in mice at 9.4 Tesla

This study evaluates the test-retest reproducibility of MTR and MTsat in mouse brains at 9.4 T, finding high reproducibility and sample size requirements for detecting effect sizes.

Whole brain mapping of glutamate in adult and old primates at 11.7T

The paper maps glutamate distribution in adult and old primate brains using high-field gluCEST imaging, identifying age-related changes in specific brain regions and networks.

Not all noise-reduction methods for fMRI preprocessing are created equal

This study compares FIX and CompCor noise-reduction techniques in fMRI datasets, finding that FIX better conserves signal while removing similar amounts of noise during both noxious and non-noxious stimulations.

Restoring statistical validity in group analyses of motion-corrupted MRI data

The paper introduces a data-driven method to restore statistical validity in MRI group analyses by assigning image weights based on quality indices, improving performance across brain regions despite motion effects.

Test-retest reproducibility of human brain multi-slice 1H FID-MRSI data at 9.4 T after optimization of lipid regularization, macromolecular model and spline baseline stiffness

The paper evaluates how lipid suppression, macromolecular models, and baseline stiffness affect reproducibility of metabolite ratios in human brain MRSI data at 9.4 T.

Model-based dynamic off-resonance correction for improved accelerated fMRI in awake behaving non-human primates

This paper introduces a model-based method to correct dynamic off-resonance in accelerated fMRI of awake non-human primates, reducing artifacts and improving image quality.

Comparison of seven modelling algorithms for GABA-edited 1H-MRS

The paper compares seven algorithms for modelling GABA-edited 1H-MRS data from 222 subjects across 20 sites, finding moderate agreement and highlighting the need for standardized parameters.

Dynamic observation of 2H labeled compounds in the human brain with 1H versus 2H magnetic resonance spectroscopy at 9.4T

The paper compares two techniques for measuring glucose metabolism in the human brain using deuterium-labeled compounds and MR spectroscopy, estimating TCA cycle and glutamine synthesis rates.

Whole-brain studies of spontaneous behavior in head-fixed rats enabled by zero echo time MB-SWIFT fMRI

This paper introduces MB-SWIFT fMRI to study whole-brain activity in head-fixed rats during spontaneous behavior, showing functional parcellation and behavior-related brain activity.

Charting human subcortical maturation across the adult lifespan with in vivo 7 T MRI

This study maps age-related changes in 17 human subcortical structures using in vivo 7 T MRI, revealing shifts in location and properties across the adult lifespan.