Eric Seth Michael
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View article: A unipolar head gradient for high‐field <scp>MRI</scp> without encoding ambiguity
A unipolar head gradient for high‐field <span>MRI</span> without encoding ambiguity Open
Purpose MRI gradients with a conventional, bipolar design generally face a trade‐off among performance, encoding ambiguity, and radiofrequency selectivity used to circumvent said ambiguity. This problem is particularly limiting in cutting‐…
View article: Enhanced spectral response in frequency‐dependent diffusion measurements using a linear encoding model
Enhanced spectral response in frequency‐dependent diffusion measurements using a linear encoding model Open
Purpose To devise a more comprehensive quantitative representation for spectral encodings in frequency‐dependent diffusion measurements for improved estimation of D (ω). Theory and Methods Whereas a spectral diffusion measurement is typica…
View article: Non‐monotonic time‐ and frequency‐dependent diffusion kurtosis in the human brain revealed by pulsed and oscillating gradient experiments
Non‐monotonic time‐ and frequency‐dependent diffusion kurtosis in the human brain revealed by pulsed and oscillating gradient experiments Open
Purpose To investigate the time and frequency dependence of diffusion kurtosis in the in vivo human brain with pulsed (PGSE) and oscillating gradient spin‐echo (OGSE) experiments over a range of diffusion times and frequencies using high‐p…
View article: Engineering clinical translation of OGSE diffusion MRI
Engineering clinical translation of OGSE diffusion MRI Open
Oscillating gradient spin echo (OGSE) diffusion MRI (dMRI) can probe the diffusive dynamics on short time scales ≲10 ms, which translates into the sensitivity to tissue microstructure at the short length scales m. OGSE‐based tissue microst…
View article: Basis function compression for field probe monitoring
Basis function compression for field probe monitoring Open
Purpose Field monitoring using field probes allows for accurate measurement of magnetic field perturbations, such as from eddy currents, during MRI scanning. However, errors may result when the spatial variation of the fields is not well‐d…
View article: Basis function compression for field probe monitoring
Basis function compression for field probe monitoring Open
Purpose: Field monitoring using field probes allows for accurate measurement of magnetic field perturbations, such as from eddy currents, during MRI scanning. However, errors may result when the spatial variation of the fields is not well-…
View article: Motion‐compensated diffusion encoding in multi‐shot human brain acquisitions: Insights using high‐performance gradients
Motion‐compensated diffusion encoding in multi‐shot human brain acquisitions: Insights using high‐performance gradients Open
Purpose To evaluate the utility of up to second‐order motion‐compensated diffusion encoding in multi‐shot human brain acquisitions. Methods Experiments were performed with high‐performance gradients using three forms of diffusion encoding …
View article: Evaluating diffusion dispersion across an extended range of b‐values and frequencies: Exploiting gap‐filled OGSE shapes, strong gradients, and spiral readouts
Evaluating diffusion dispersion across an extended range of b‐values and frequencies: Exploiting gap‐filled OGSE shapes, strong gradients, and spiral readouts Open
Purpose To address the long echo times and relatively weak diffusion sensitization that typically limit oscillating gradient spin‐echo (OGSE) experiments, an OGSE implementation combining spiral readouts, gap‐filled oscillating gradient sh…