Results 131 to 140 of about 22,111 (245)

Positioning and Mitigating Mining-Induced Phase Gradients for InSAR Phase Unwrapping

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Interferometric synthetic aperture radar (SAR) has been widely used for deformation monitoring in mining areas. However, the nonlinear high-phase gradients caused by subsidence funnels are a major source of error in accurate measurements, as they present
Xin Tian, Xia Wu, Hanwen Yu, Mi Jiang
doaj   +1 more source

Correlation of ultrasound attenuation with proton density fat fraction across multiple organs in healthy volunteers

open access: yesMedical Physics, Volume 53, Issue 5, May 2026.
Abstract Background Local determination of the attenuation in biological tissues has been the focus of extensive research over the past decades. Its characterization is of major interest for both noninvasive thermal therapies and diagnostic applications. Numerous ultrasound (US)‐based methods have been investigated in recent years to assess attenuation
Adrien Rohfritsch   +7 more
wiley   +1 more source

Divergence-Free Constrained Phase Unwrapping and Denoising for 4D Flow MRI Using Weighted Least-Squares. [PDF]

open access: yesIEEE Trans Med Imaging, 2021
Zhang J   +8 more
europepmc   +1 more source

A Novel 9‐Channel 1H, 3‐Channel 31P Radiofrequency Coil for Interleaved Multinuclear Studies of Human Calf Muscle at 7 T

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 5, Page 3008-3020, May 2026.
ABSTRACT Purpose To develop a double‐tuned calf coil with excellent 1H and 31P performance to study muscle physiology by interleaved 1H/31P MRS and parallel imaging at 7 T. Methods The coil combines three 1H transceive dipoles, six 1H receive‐only loops and three 31P transceive loops, arranged in a nested, half‐cylindrical layout.
Veronika Cap   +8 more
wiley   +1 more source

Phase unwrapping with a rapid opensource minimum spanning tree algorithm (ROMEO). [PDF]

open access: yesMagn Reson Med, 2021
Dymerska B   +6 more
europepmc   +1 more source

Assessing Age‐Associated Influences on Paramagnetic and Diamagnetic Susceptibility Maps in Postmortem Human Brains

open access: yesNMR in Biomedicine, Volume 39, Issue 5, May 2026.
We applied the APART‐QSM method to in situ postmortem MRI from 47 subjects (31–91 years) to assess age effects on paramagnetic and diamagnetic susceptibility. Diamagnetic susceptibility declined with age in basal ganglia, possibly reflecting shared biological factors.
José Henrique Monteiro de Azevedo   +7 more
wiley   +1 more source

Exploring the Role of Vascular Factors and Tissue Properties in Pulsatile Brain Deformation

open access: yesNMR in Biomedicine, Volume 39, Issue 5, May 2026.
This study combined strain tensor imaging (STI), intrinsic magnetic resonance elastography (iMRE), and atlas‐based regional metrics to explore physiological drivers of cardiac‐induced brain strain. Volumetric strain was mainly associated with vascular factors such as cerebral blood volume and pulse pressure, whereas octahedral shear strain correlated ...
Marius Burman Ingeberg   +3 more
wiley   +1 more source

“We Are One of the Most Depressed Professionals”: Nurses' Experiences of Psychological Hazards in A District Hospital

open access: yesNursing Open, Volume 13, Issue 5, May 2026.
ABSTRACT Aim This study explored the occupational hazards faced by nurses in a district hospital in Ghana, analysed their psychological outcomes, and examined how emotional labour mediates nurses' behaviour in patient care. Design A focused ethnographic study.
Perpetual N. B. Kodom   +2 more
wiley   +1 more source

Enhancing Ground-Based SAR Monitoring With PCA-Based Geometry Transformation for Improved Phase Unwrapping

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Ground-based synthetic aperture radar (GB-SAR) systems are most often used for landslide and open-pit mine monitoring due to their high temporal sampling and spatial coverage. For infrastructure monitoring, it has not yet attained widespread adoption for
Matthieu Rebmeister   +4 more
doaj   +1 more source

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