Results 151 to 160 of about 1,253 (283)

Multispectral Mid‐Infrared Imaging With Incoherent Light via Adiabatic Upconversion

open access: yesLaser &Photonics Reviews, EarlyView.
We demonstrate room‐temperature broadband MIR imaging based on adiabatic frequency upconversion, driven by a Q‐switched pump laser and incoherent illumination. The small‐foot‐print system upconverts the spectral range to the visible domain, without scanning, thermal control and with spatial resolution below 20μm$20\mathrm{\mu}\mathrm{m}$.
Daniel Beitner   +4 more
wiley   +1 more source

Disease Duration Differentiates Freezing of Gait Response to Subthalamic and Nigral Stimulation for Parkinson's Disease in an Exploratory Multicenter Controlled Trial

open access: yesMovement Disorders Clinical Practice, EarlyView.
Abstract Background Freezing of gait (FoG) belongs to most pressing unmet symptoms in the treatment of Parkinson's disease. Objectives To explore whether combined subthalamic and nigral (STN + SNr) deep brain stimulation improves FoG compared with optimized STN stimulation alone; to identify clinical variables associated with therapeutic response ...
Daniel Weiss   +29 more
wiley   +1 more source

Foundry-enabled wafer-scale characterization and modeling of silicon photonic DWDM links. [PDF]

open access: yesNanophotonics
Parsons R   +8 more
europepmc   +1 more source

Expanding the chemistry of borates with functional [BO2]- anions. [PDF]

open access: yesNat Commun, 2021
Huang C   +8 more
europepmc   +1 more source

Toward Inter‐Sonication Monitoring of Skull and Brain Temperatures in Transcranial MRgFUS Using a 3D Stack‐of‐Spirals Sequence

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop an MRI approach for simultaneous skull and brain temperature monitoring between sonications in transcranial MR‐guided focused ultrasound (MRgFUS) surgeries. Methods A 3D stack‐of‐spirals dual‐echo ultra‐short TE (UTE) sequence incorporating fat suppression, spiral deblurring, trajectory measurement, and B1 correction was ...
Sheng Chen   +4 more
wiley   +1 more source

High Dynamic Range Turbo‐FLASH B1 Mapping for Characterizing Multi‐Transmit Multi‐Receive RF Arrays, Validated at 7 T and 11.7 T

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Transmit (B1+) and receive (B1−) sensitivities of parallel‐transmit/receive RF array are a prerequisite for modern ultra‐high‐field MRI. Their accurate mapping remains challenging for coils with high transmit dynamic range, particularly in regions with low combined‐mode B1+ magnitude, where standard reconstruction is impaired by noise.
Natalia Dudysheva   +5 more
wiley   +1 more source

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