Results 11 to 20 of about 14,740 (209)
3D MR Thermometry Using Bi-Directional Segmented EPI for Transcranial-Focused Ultrasound. [PDF]
Magn Reson MedABSTRACT Purpose To evaluate the feasibility of replacing clinically utilized 2D thermometry with 3D segmented EPI‐based thermometry with equivalent accuracy, precision, and scan time. Methods A 3D segmented EPI (segEPI) trajectory was modified to allow readouts along both the forward and reverse direction for each phase encoding line, and the sequence
Malmberg M +5 more
europepmc +2 more sources
A Flexible Approach for Fat-Water Separation With Bipolar Readouts and Correction of Gradient-Induced Phase and Amplitude Effects. [PDF]
Magn Reson MedABSTRACT Purpose To develop a fat‐water separation approach that corrects bipolar readout gradient‐induced effects without additional scans and is compatible with any fat‐water separation method. Theory and Methods The proposed approach combines joint fat‐water separation of the odd and even echoes of a bipolar multi‐echo gradient echo acquisition with
Campos Pazmiño J +3 more
europepmc +2 more sources
Laser &Photonics Reviews, Volume 20, Issue 5, 6 March 2026.In this work, we investigated the dynamic retinal pathology of glaucoma from onset to late stages through longitudinal in vivo high‐resolution imaging in a silicone oil‐induced ocular hypertension (SOHU) glaucoma mouse model. We developed an optimized adaptive optics two‐photon excitation fluorescence microscopy (AO‐TPEFM) technique for morphological ...
Yiming Fu +6 more
wiley +1 more source
Pharmacokinetic modeling strategies for dynamic hyperpolarized urea imaging
Magnetic Resonance in Medicine, Volume 95, Issue 3, Page 1671-1683, March 2026.Abstract Purpose To evaluate pharmacokinetic modeling methods for quantification of tissue perfusion/permeability with hyperpolarized 13C urea. Methods Three models for quantitative analysis of dynamic HP urea imaging data were proposed and evaluated in numerical simulations and a thyroid cancer mouse model.
Keith A. Michel +6 more
wiley +1 more source
High efficiency, high frequency magnetic deflection driver [PDF]
, 1968 Electromagnetic deflection yoke stores energy during the scan and releases it in the flyback or retrace. The operation of the device involves a method of switching to a voltage high enough to dissipate the flyback pulse during the retrace time and then ...
Schaff, F. L.
core +1 more source
Narrow bandwidth video Patent [PDF]
, 1969 Improvements in receiver of narrow bandwidth television ...
Bockwoldt, W. H.
core +1 more source
Semi-flexible bimetal-based thermal energy harvesters
, 2013 This paper introduces a new semi-flexible device able to turn thermal gradients into electricity by using a curved bimetal coupled to an electret-based converter.
Boisseau, S +4 more
core +1 more source
One-Quadrant Switched-Mode Power Converters [PDF]
, 2016 This article presents the main topics related to one-quadrant power converters. The basic topologies are analysed and a simple methodology to obtain the steady-state output-input voltage ratio is set out.
Petrocelli, R.
core +3 more sources
Optimized motion‐insensitive PDFF mapping of the liver
Magnetic Resonance in Medicine, Volume 95, Issue 1, Page 249-267, January 2026.Abstract Purpose To implement, optimize, and validate parallel imaging (PI)‐accelerated, 2D, flip angle modulated (FAM) chemical shift‐encoded quantification of liver proton‐density fat fraction (PDFF), with motion insensitivity. Methods The optimization cost function that determines flip angles in FAM was generalized for PI.
Jiayi Tang +12 more
wiley +1 more source
Sustained arc ignition system [PDF]
, 1977 Circuitry for maintaining an arc or spark across a spark gap for a desired length of time is disclosed. A high voltage, direct current source is connected in series with a secondary winding of a high voltage, stepup transformer or coil and a spark gap ...
Birchenough, A. G.
core +1 more source