ArticleMagnetic resonance imaging2017
Dependence on b-value of the direction-averaged diffusion-weighted imaging signal in brain.
Article in Magnetic resonance imaging, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.
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61 citing papers in PubMed.
- Beyond Directions: Symmetry-Aware Rotation Sets for Triaxial Diffusion Encoding by Geometric Filter Optimization.Magnetic resonance in medicine · 2026Article
- The Association of Apparent Myelin Water Fraction With Diffusional Kurtosis and Biophysical Modeling Parameters.NMR in biomedicine · 2026Article
- Axon Diameter Mapping in the Living Human Brain with Ultra-High-Gradient Diffusion MRI at 500 mT/m Gradient Strength.Human brain mapping · 2026Article
- 40 Years of diffusion MRI in the brain: From history to emerging frontiers.Imaging neuroscience (Cambridge, Mass.) · 2026Review
- Advanced microstructure imaging at high b-values and high resolution combining ultra-high performance gradient diffusion imaging and model-based deep learning demonstrated using 3D multi-slab acquisition.Magnetic resonance in medicine · 2026Article
- Enhanced structural brain connectivity analyses using high diffusion-weighting strengths.Brain structure & function · 2025Article
- Quasi-Diffusion Imaging: Application to Ultra-High b-Value and Time-Dependent Diffusion Images of Brain Tissue.NMR in biomedicine · 2025Article
- Feasibility of brain intra-axonal microstructure imaging with ultrahigh B-encoding using MAGNUS ultra-high-performance gradients.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- Intra-voxel angular dispersion of fibers in corpus callosum decreases with healthy aging.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- Article
- Quantifying human gray matter microstructure using neurite exchange imaging (NEXI) and 300 mT/m gradients.Imaging neuroscience (Cambridge, Mass.) · 2024Article
- Mapping tissue microstructure of brain white matter in vivo in health and disease using diffusion MRI.Imaging neuroscience (Cambridge, Mass.) · 2024Article
- Adult lifespan maturation and degeneration patterns in gray and white matter: A mean apparent propagator (MAP) MRI study.Neurobiology of aging · 2023Article
- versaFlow: a versatile pipeline for resolution adapted diffusion MRI processing and its application to studying the variability of the PRIME-DE database.Frontiers in neuroinformatics · 2023Article
- Minimal number of sampling directions for robust measures of the spherical mean diffusion weighted signal: Effects of sampling directions, b-value, signal-to-noise ratio, hardware, and fitting strategy.Magnetic resonance imaging · 2022Article
- Optimization of quasi-diffusion magnetic resonance imaging for quantitative accuracy and time-efficient acquisition.Magnetic resonance in medicine · 2022Article
- Estimating axial diffusivity in the NODDI model.NeuroImage · 2022Article
- Impact of intra-axonal kurtosis on fiber orientation density functions estimated with fiber ball imaging.Magnetic resonance in medicine · 2022Article
- Neurite Exchange Imaging (NEXI): A minimal model of diffusion in gray matter with inter-compartment water exchange.NeuroImage · 2022Article
- Mapping the human connectome using diffusion MRI at 300 mT/m gradient strength: Methodological advances and scientific impact.NeuroImage · 2022Review
1 more citing papers are in PubMed but not listed here.
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Abstract
purposeThe dependence of the direction-averaged diffusion-weighted imaging (DWI) signal in brain was studied as a function of b-value in order to help elucidate the relationship between diffusion weighting and brain microstructure.
methodsHigh angular resolution diffusion imaging (HARDI) data were acquired from two human volunteers with 128 diffusion-encoding directions and six b-value shells ranging from 1000 to 6000s/mm
resultsFor all regions of interest, a simple power law relationship accurately described the observed dependence of the direction-averaged signal as a function of the diffusion weighting. In white matter, the characteristic exponent was 0.56±0.05, while in gray matter it was 0.88±0.11. Comparable results were found with the HCP data.
conclusionThe direction-averaged DWI signal varies, to a good approximation, as a power of the b-value, for b-values between 1000 and 6000s/mm
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