Vivek Srikar Yedavalli

Metabolite Relaxation Times at 3T From Birth to 7 Years

The paper estimates age-related changes in metabolite relaxation times in pediatric thalamus using MRS and provides linear equations for age-specific correction.

Real-time AI integration for MR to detect artifacts and guide pulse sequence adaptations

This paper introduces an AI-integrated MRI pulse sequence that detects and adapts to out-of-voxel artifacts in real-time, improving data quality through gradient adjustments.

Non-invasive MRI mapping of tissue-CSF water exchange reveals glymphatic fluid movement in live human cortex

This study uses MRI to show glymphatic fluid movement in live human cortex, finding reduced exchange in Alzheimer's disease.

Identifying out-of-voxel echoes in edited MRS with phase cycle inversion

The paper introduces a method to identify out-of-voxel signals in MRS by analyzing phase cycles, leading to improved suppression of artifacts through optimized gradients.

Gradient scheme optimization for PRESS-localized edited MRS using weighted pathway suppression

This paper optimizes a gradient scheme for PRESS-localized edited MRS to suppress out-of-voxel artifacts using a volume-based likelihood model and genetic algorithm.

Age dependency of neurometabolite T1 relaxation times

The paper measures metabolite T1 relaxation times in healthy adults across age groups and finds age-related decreases in several metabolites in specific brain regions.

Metabolite T2 relaxation times decrease across the adult lifespan in a large multi-site cohort

The paper investigates age-related changes in metabolite T2 relaxation times across the adult lifespan in a multi-site cohort, finding significant declines in several metabolites with aging.

A Water Relaxation Atlas for Age and Region specific Metabolite Concentration Correction

This paper develops a water relaxation atlas to correct metabolite concentrations in MRS by integrating age and region-specific relaxation values into the analysis workflow.

Comparison of test-retest reproducibility of DESPOT and 3D-QALAS for water T1 and T2 mapping

This study compares the test-retest reproducibility of DESPOT and QALAS for T1 and T2 mapping in healthy volunteers, finding QALAS provides better reproducibility and reduced acquisition time.

Integrated Short-TE and Hadamard-edited Multi-Sequence (ISTHMUS) for Advanced MRS

The paper evaluates the ISTHMUS MRS sequence for reproducibility and data quality in the HBCD study, finding improved T2 correction and reduced operator workload.

Brain Glutathione and GABA+ levels in autistic children

This study found no significant differences in cerebral glutathione or GABA levels between autistic children and typically developing children, but found a positive correlation between GABA levels and ADHD inattention scores.

Impact of acquisition and modeling parameters on test-retest reproducibility of edited GABA+

This study evaluates how acquisition and modeling parameters affect test-retest reproducibility of GABA+ measurements using edited MRS, finding that model selection significantly impacts reproducibility.