Results 111 to 120 of about 6,973,682 (218)

Simultaneous 3‐D Adiabatic T1ρ, T2*, and Quantitative Susceptibility Mapping for Characterization of Myocardial Infarction in Ex Vivo Mouse

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
This study combines segmented T1ρ preparation into a 3‐D gradient‐echo sequence for simultaneous quantitative susceptibility, T2*, and T1ρ mapping of infarcted mouse hearts ex vivo. The method enabled assessment of T1ρ and T2* relaxation time maps and magnetic susceptibility, with ischemic regions clearly identified by all contrasts and consistent with
Iida Räty, Olli Nykänen, Sanna Kettunen, Svetlana Laidinen, Anna‐Kaisa Ruotsalainen, Mikko J. Nissi, Elias Ylä‐Herttuala   +6 more
wiley   +1 more source

Quantifying the Diamagnetic and Paramagnetic Components of Beta‐Amyloid Plaques Using Decomposed Quantitative Susceptibility Mapping in Mouse Models of Alzheimer's Disease

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
Ex vivo MRI was performed on AD mouse models using high‐resolution multi‐echo gradient‐echo imaging on a 9.4T scanner to generate quantitative susceptibility maps (QSM) and separate diamagnetic and paramagnetic components. Amyloid‐β$$ \beta $$ plaques were detected from the susceptibility maps.
Juan Liu, Jingjia Chen, Season K. Wyatt‐Johnson, Jie Chen, Zhuoheng Liu, Hongbo Wu, Li Feng, Randy R. Brutkiewicz, Nian Wang   +8 more
wiley   +1 more source

The Iseult Coil, a Hybrid RF Coil for the First Human Brain Images at 11.7 T: Receive Performance Comparison With a Twin Coil at 7 T

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
Our 8‐Tx/32‐Rx coil is based on two rows of transceiver microstrips intertwined with receive‐only loops. Comparison of the intrinsic SNR at 7 and 11.7 T leads to a 2.2 ratio for the human brain, and 2.75 for a 16‐cm agar sphere, translating into α = 1.5 and 1.95 in the B0α$$ {B}_0^{\alpha } $$‐SNR model, respectively.
Alexis Amadon, Paul‐François Gapais, Guillaume Ferrand, Vincent Gras, Franck Mauconduit, Caroline Le Ster, Alexandre Vignaud, Nicolas Boulant, Michel Luong   +8 more
wiley   +1 more source

A Singularity Point Degradation Four Directions Least-square Algorithm for InSAR Phase Unwrapping

工程科学与技术, 2009
:Phase unwrapping is the key step of InSAR (Interferometric Synthetic Aperture Radar) imaging,and how to process phase singularity points (SPs) effectively is very difficult problem in phase unwrapping.
doaj  

An Improved SBAS-InSAR Processing Method Considering Phase Consistency: Application to Landslide Monitoring in Hualong County, Qinghai Province, China

Sensors
Phase consistency is a critical prerequisite for achieving high-precision time-series InSAR deformation retrieval. However, conventional SBAS-InSAR methods provide only limited consideration of phase consistency during the inversion process.
Wulinhong Luo, Bo Liu, Guangcai Feng, Zhiqiang Xiong, Wei Yin, Haiyan Wang, You Yu, Peiyu Chen, Jixiong Yang   +8 more
doaj   +1 more source

The Role of Tectonic Inheritance in Active Rift Seismicity and Magmatism: Constraints From 3‐D Gravity Inversion and D‐InSAR Modeling of the 2025 Fentale Swarm, Ethiopia

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The role of inherited lithospheric structures in active rift seismicity and magma intrusion remains a key uncertainty in continental breakup dynamics. We investigate the January 2025 Northern Main Ethiopian Rift swarm using constrained 3‐D gravity inversion and D‐InSAR observations to characterize crustal architecture, seismicity, and active ...
Denberu Besfat, Tilahun Mammo
wiley   +1 more source

LDM-PUNet: A Lightweight Network for Denoising and Phase Unwrapping SAR Interferograms in Mining Deformation Monitoring

Remote Sensing
Interferometric synthetic aperture radar (InSAR) enables large-scale, all-weather, day-and-night monitoring of surface deformation, but phase unwrapping remains challenging in mining areas with large-gradient deformation.
Qi Liu, Weitao Yan, Junjie Chen
doaj   +1 more source

Aseismic Slip Along the Evaporite‐Rich Strike‐Slip Katouna‐Stamna Fault in Greece

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Aseismic slip has been observed on many active faults globally, but its controlling mechanisms remain unclear. This study focuses on the NW‐striking, left‐lateral Katouna‐Stamna Fault in Western Greece. We use InSAR surface deformation measurements to confirm the presence of aseismic slip and compare this behavior with structural evidence from
Joel Szrek, Silvia Crosetto, Sabrina Metzger, Giorgio Gomba, Claudio Faccenna, Romain Jolivet   +5 more
wiley   +1 more source

Phase Unwrapping via Deep Learning for Surface Shape Measurement by Using Wavelength-Tuning Interferometry

Applied Sciences
In the field of optical metrology, wavelength-tunable interferometry is widely used to obtain the phase information of measured objects. Due to the modulo 2π operation, the extracted phase is inherently wrapped into the range of −π to π, which ...
Bohang Zhong, Huaian Yi, Fuqing Miao
doaj   +1 more source

Fluid Injection Triggers Large‐Scale Slow‐Slip Activation of the Rocky Mountain Fold and Thrust Belt

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Using interferometric synthetic aperture radar (InSAR) we show that hydraulic fracturing treatments near the subsurface deformation limit of the Rocky Mountain Fold and Thrust Belt produced 12 intraplate, aseismic, slow‐slip events with magnitudes Mw ${M}_{w}$ 4.71–5.06 at 1,640–2,410 m depths.
Mirko van der Baan, Sergey Samsonov, Hannes Vasyura‐Bathke, Raisha Pradisti, David W. Eaton, Hongxue Han   +5 more
wiley   +1 more source