Results 71 to 80 of about 858 (163)

Single‐Breathhold 3D MR Elastography in the Liver, With Simultaneous R2* and PDFF Mapping

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 2, Page 682-697, August 2026.
Purpose To develop a sequence for the rapid acquisition of MR elastography (MRE) parameters in 3D, with simultaneous measurement of proton‐density fat fraction (PDFF) and R2* for multiparametric assessment of liver disease. Methods The proposed sequence uses an interleaved motion‐encoding scheme to acquire 3D volumes of all motion encodings and wave ...
Donovan P. Tripp   +10 more
wiley   +1 more source

Randomized Algorithms for Streaming Low‐Rank Approximation in Tree Tensor Network Format

open access: yesNumerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.
ABSTRACT In this work, we present the tree tensor network Nyström (TTNN), an algorithm that extends recent research on streamable tensor approximation, such as for Tucker and tensor‐train formats, to the more general tree tensor network format, enabling a unified treatment of various existing methods.
Alberto Bucci, Gianfranco Verzella
wiley   +1 more source

Cross‐Scale Synergistic Optimization for Miniature Meta‐Liquid Hybrid Zoom Imaging

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
A physically constrained optimization framework links electrowetting liquid lenses and metasurface dispersion engineering to realize a compact visible‐band achromatic zoom imager. By co‐optimizing zoom actuation, meta‐atom manufacturability, and system aberrations, the design achieves 1.5x zoom in a 15.5 mm track and clarifies robustness against ...
Zhuoxuan Fan   +10 more
wiley   +1 more source

On Dirichlet series like to compositions of Hadamard

open access: yesMatematychni Studii, 2019
O. M. Mulyava, M. M. Sheremeta
openaire   +1 more source

Atlas-Based Adaptive Hadamard-Encoded MR Spectroscopic Imaging at 3T. [PDF]

open access: yesTomography, 2023
Liu H, Autry AW, Larson PEZ, Xu D, Li Y.
europepmc   +1 more source

Analytic continuation of diagonals and Hadamard compositions of multiple power series [PDF]

open access: yesTransactions of the American Mathematical Society, 1938
Cameron, R. H., Martin, W. T.
openaire   +2 more sources

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