Results 101 to 110 of about 6,973,682 (218)
Flow 2.0: A Standardized Toolbox for Real‐Time Phase‐Contrast MRI of Neurofluid Dynamics
ABSTRACT Purpose Real‐time phase‐contrast MRI (RT‐PC) enables continuous quantification of physiological flow dynamics across multiple temporal frequencies, but its broader application is limited by complex and fragmented post‐processing workflows.
Pan Liu, Olivier Balédent
wiley +1 more source
Evaluation of Phantom Doping Materials in Quantitative Susceptibility Mapping
ABSTRACT Purpose To measure magnetic susceptibility (χ) with Quantitative Susceptibility Mapping (QSM) and evaluate its repeatability using four phantom doping materials relevant to QSM applications. Methods A cylindrical phantom was constructed containing vials of agarose gel doped with two paramagnetic materials (ferritin, USPIO) and two diamagnetic ...
Padriac Hooper +5 more
wiley +1 more source
Aimed at the problems of severe layover, interferometric phase aliasing and phase jumps caused by dense urban features, which lead to difficulties in phase unwrapping and insufficient automation and intelligence in building areas under complex scenes ...
Miao Xu +4 more
doaj +1 more source
ABSTRACT Purpose To introduce a novel multiecho, multishot spiral MR elastography (MRE) sequence to image brain and skull displacement simultaneously using a joint fat‐water image reconstruction and distributed motion encoding. Methods Multiple echo times were implemented into a high‐resolution multishot spiral MRE sequence to capture water‐based brain
Alexa M. Diano +8 more
wiley +1 more source
ABSTRACT Purpose To develop a reconstruction framework for DW‐PROPELLER‐EPI that improves image quality and SNR efficiency under per‐blade acceleration while minimizing EPI‐related artifacts, enabling high‐resolution diffusion‐tensor imaging (DTI) with fewer blades.
Hailin Xiong +7 more
wiley +1 more source
Achieving high-accuracy and high-speed 3D shape measurement remains a significant challenge. This paper presents a novel technique using phase-order lines (POLs), which eliminates the need for phase unwrapping in a binocular system.
Ziyou Zhang, Weipeng Yang
doaj +1 more source
Quantitative Susceptibility Mapping of Kidney Stones: An Ex Vivo MRI Phantom Study
ABSTRACT Purpose To visualize and characterize the five most common kidney stone types based on their magnetic susceptibilities in MRI using QSM. Methods Three water‐based agar phantoms were constructed, containing a total of 53 ex vivo kidney stones of varying types and sizes.
Lion H. Mücke +8 more
wiley +1 more source
Multibaseline (MB) phase unwrapping (PU), as the core step in MB InSAR, breaks the limitation of phase continuity assumption. However, it still suffers from insufficient noise robustness and low unwrapping efficiency.
Hui Liu +7 more
doaj +1 more source
ABSTRACT Purpose To demonstrate the synergy of undersampled radial 2in1‐RARE‐EPI acquisition and nonlinear model‐based reconstruction for accelerated and simultaneous T2, T2*, and R2′ mapping in brains of patients with multiple sclerosis (MS). Methods 2in1‐RARE‐EPI combines a RARE module with an EPI module to capture T2 and T2* information.
Jose Raul Velasquez Vides +16 more
wiley +1 more source
Positioning and Mitigating Mining-Induced Phase Gradients for InSAR Phase Unwrapping
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

