Results 241 to 250 of about 55,120 (310)

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

Whole‐Brain Diffusion MRI at 7T With Universal Multiband GRAPE pTx Pulses

open access: yesMagnetic Resonance in Medicine, EarlyView.
Purpose To improve signal strength and homogeneity of whole‐brain diffusion‐weighted imaging (DWI) at 7T. Methods Universal multiband excitation and refocusing pulses were optimized with the gradient ascent pulse engineering (GRAPE) algorithm across a database of B1+$$ {B}_1^{+} $$ and B0$$ {B}_0 $$ maps obtained from 20 subjects.
Marten Laufenberg   +5 more
wiley   +1 more source

Optimal Transmission Performance of Quadrature Wireless Resonators at 3 T

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate a method for optimizing the efficiency of wireless resonators using tailored excitation from a dual‐transmit birdcage coil (BC), and to present the design and experimental investigation of a quadrature resonator for 3 T breast MRI application.
Leila Sharipova   +7 more
wiley   +1 more source

Endoscopic small bowel therapies for type 2 diabetes

open access: yesNutrition in Clinical Practice, EarlyView.
Abstract Type 2 diabetes is a global epidemic despite current medical treatments. Many patients are not responsive to medications, and patients with obesity are hesitant about bariatric surgery. Studies investigating the metabolic effects of Roux‐en‐Y gastric bypass have increasingly demonstrated that the duodenum plays a key role in the ...
Roma Patel   +4 more
wiley   +1 more source

Impact of hematuria on long term kidney outcomes in adults with immunoglobulin A nephropathy: a systematic literature review and meta-analysis. [PDF]

open access: yesFront Nephrol
Iff J   +11 more
europepmc   +1 more source

FLSea: Underwater Visual–Inertial and Stereovision Forward‐Looking Data Sets

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Visibility underwater is challenging and degrades as the distance between the subject and the camera increases. That is why forward‐looking underwater computer vision tasks are difficult. We have collected underwater forward‐looking stereovision and visual–inertial image sets using two underwater imaging platforms, a stereo camera rig, and an ...
Yelena Randall   +2 more
wiley   +1 more source

Long-term adaptation pathways for Venice and its lagoon under sea-level rise. [PDF]

open access: yesSci Rep
Lionello P   +14 more
europepmc   +1 more source

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