[HTML][HTML] Gradient waveform design for tensor-valued encoding in diffusion MRI
Diffusion encoding along multiple spatial directions per signal acquisition can be described
in terms of a b-tensor. The benefit of tensor-valued diffusion encoding is that it unlocks …
in terms of a b-tensor. The benefit of tensor-valued diffusion encoding is that it unlocks …
Diffusion MRI with pulsed and free gradient waveforms: effects of restricted diffusion and exchange
Monitoring time dependence with diffusion MRI yields observables sensitive to compartment
sizes (restricted diffusion) and membrane permeability (water exchange). However …
sizes (restricted diffusion) and membrane permeability (water exchange). However …
Motion‐compensated gradient waveforms for tensor‐valued diffusion encoding by constrained numerical optimization
F Szczepankiewicz, J Sjölund… - Magnetic resonance …, 2021 - Wiley Online Library
Purpose Diffusion‐weighted MRI is sensitive to incoherent tissue motion, which may
confound the measured signal and subsequent analysis. We propose a “motion …
confound the measured signal and subsequent analysis. We propose a “motion …
Time dependence in diffusion MRI predicts tissue outcome in ischemic stroke patients
B Lampinen, J Lätt, J Wasselius… - Magnetic resonance …, 2021 - Wiley Online Library
Purpose Reperfusion therapy enables effective treatment of ischemic stroke presenting
within 4–6 hours. However, tissue progression from ischemia to infarction is variable, and …
within 4–6 hours. However, tissue progression from ischemia to infarction is variable, and …
Probing restricted diffusion and exchange using free gradient waveforms: validation by numerical simulations
Monitoring time-dependence with diffusion MRI yields observables sensitive to compartment
sizes (restricted diffusion) and membrane permeability (water exchange). However …
sizes (restricted diffusion) and membrane permeability (water exchange). However …
Characterisation of restricted diffusion and exchange using the velocity autocorrelation function
A Chakwizira, S Lasič, A Reymbaut… - Proceedings of the …, 2022 - archive.ismrm.org
Temporal velocity correlations of diffusing particles carry information about the structure of
the diffusion environment. Studying high-order velocity autocorrelation functions can aid in …
the diffusion environment. Studying high-order velocity autocorrelation functions can aid in …
Probing restricted diffusion and water exchange with free gradient waveforms: Addressing the need for a compartment model
A Chakwizira, F Szczepankiewicz, L Knutsson… - archive.ismrm.org
Diffusion MRI can be used to probe restricted diffusion (compartment size) and water
exchange (membrane permeability), but their effects on the signal are entangled. This …
exchange (membrane permeability), but their effects on the signal are entangled. This …
Cumulant expansions for measuring restricted diffusion and water exchange
A Chakwizira, F Szczepankiewicz, L Knutsson… - archive.ismrm.org
Cell sizes and membrane permeability can be inferred by probing time–dependent diffusion
due to restricted diffusion and water exchange. However, restriction and exchange have …
due to restricted diffusion and water exchange. However, restriction and exchange have …
Mapping water exchange in the human brain using diffusion MRI with free waveform encoding
Temporal velocity correlations of diffusing particles carry information about the structure of
the diffusion environment. Studying high-order velocity autocorrelation functions can aid in …
the diffusion environment. Studying high-order velocity autocorrelation functions can aid in …
[PDF][PDF] Unified theory and experimental approach for measuring restricted diffusion and water exchange
A Chakwizira - 2020 - lup.lub.lu.se
Fifteen million people lose their lives to stroke and cancer every year. This amounts to one in
every four deaths worldwide, making these among the deadliest diseases affecting …
every four deaths worldwide, making these among the deadliest diseases affecting …