Results 191 to 200 of about 67,740 (222)

Assessment of Optimal T1/T2‐Weighted Combinations for Myelin Sensitivity: Effects of Echo Time and Exponents

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The aim of this study is to improve the traditional T1‐weighted (T1w) over T2‐weighted (T2w) ratio as a proxy for myelin by investigating the optimal T2w TE and combination of exponent‐weighted T1w and T2w images (T1wx1/T2wx2$$ \mathrm{T}1{\mathrm{w}}^{x_1}/\mathrm{T}2{\mathrm{w}}^{x_2} $$).
Simone Monachino, Gerhard S. Drenthen, Lis J. M. van den Boogaard, Marcel Breeuwer, Catarina Dinis Fernandes, Oliver H. H. Gerlach, Svitlana Zinger, Jacobus F. A. Jansen   +7 more
wiley   +1 more source

Patient radiation dosimetry for fluoroscopically guided interventions - a review of the history and limitations. [PDF]

Med Phys
Wunderle KA, Balter S.
europepmc   +1 more source

Toward Super‐Resolution Reconstruction of Diffusion–Relaxation MRI Using Slice Excitation With Random Overlap (SERO)

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Diffusion MRI probes tissue microstructure, but low SNR and limited resolution hinder detection of features and parameter estimates. We introduce slice excitation with random overlap (SERO), which enables variable repetition times (TRs) and diffusion weighting within a single shot.
Felix Mortensen, Jakub Jurek, Jens Sjölund, Geraline Vis, Ronnie Wirestam, Malwina Molendowska, Andrzej Materka, Filip Szczepankiewicz   +7 more
wiley   +1 more source

The effect of concomitant gradient fields on MRI with long readout radial-based trajectories. [PDF]

Magn Reson Med
Malmberg MA, Odéen H, Kim SE, Parker DL.   +3 more
europepmc   +1 more source

Relaxivity of Gadobutrol and Gadoteric Acid in Cerebrospinal Fluid at 3T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The aim was to estimate T1 relaxivity of gadobutrol and gadoteric acid in cerebrospinal fluid (CSF) at 3T, to support research on CSF‐flow and the glymphatic system in humans utilizing T1 mapping after intrathecal injection. Methods Using a phantom, relaxivity was estimated for gadobutrol and gadoteric acid in lumbar CSF and an ...
Sofia Behndig, Anders Garpebring, Daniel Dahlgren Lindström, Jan Malm, Anders Wåhlin, Anders Eklund   +5 more
wiley   +1 more source

Characterization and inter-scanner reproducibility of geometric distortion on a small footprint, high-performance, head-specific 0.5 T scanner. [PDF]

Med Phys
Wiens CN, Harris CT, Connell IRO.
europepmc   +1 more source

Trilateration of blast wave arrival time: an inverse method for determining explosive yield and position. [PDF]

Philos Trans A Math Phys Eng Sci
Karlsen J, Farrimond DG, Lodge TJ, Rigby SE, Tyas A, Clarke SD, Brewer TR.   +6 more
europepmc   +1 more source

Fast-RF-Shimming: Accelerate RF shimming in 7T MRI using deep learning. [PDF]

Meta Radiol
Lu Z, Liang H, Lu M, Wang X, Yan X, Huo Y.   +5 more
europepmc   +1 more source

A Novel CEST-Based Approach for Reliably Assessing Skeletal Muscle Oxidative Phosphorylation: OXCEST. [PDF]

Magn Reson Med
Burman R, Pang Y, Bag A, Finkel RS, Ness KK, Bagga P.   +5 more
europepmc   +1 more source

Assessing small-lesion detectability and acquisition time optimisation in silicon-detector-Based PET: a phantom study. [PDF]

EJNMMI Phys
Leybourne N, Prakash V, Hussein M, Fenwick A, Strouhal P, Evans P, Florescu L.   +6 more
europepmc   +1 more source