Results 121 to 130 of about 6,769 (235)

Ultrashort Echo Time Magnetic Resonance Imaging of the Lung Using a High-Relaxivity T Blood-Pool Contrast Agent

Molecular Imaging, 2014
The lung remains one of the most challenging organs to image using magnetic resonance imaging (MRI) due to intrinsic rapid signal decay. However, unlike conventional modalities such as computed tomography, MRI does not involve radiation and can provide ...
Joris Tchouala Nofiele, Weiran Cheng, Inga E. Haedicke, Tameshwar Ganesh, Xiao-an Zhang, Hai-Ling Margaret Cheng   +5 more
doaj   +1 more source

In-Situ Far-Field Calibration of Multibeam Sonar Arrays for Precise Backscatter Imagery [PDF]

, 1996
Calibration of large hull-mounted sonar transducer arrays is usually done by measuring the performance of individual components in a test tank. Multiple transducer element beam patterns are superimposed and combined with window attenuation and other ...
de Moustier, Christian, Fusillo, Larry, Satriano, John H, Zietz, Stanley   +3 more
core   +1 more source

Polymerized Pro‐Estrogen Microneedles via Two Photon Polymerization

Macromolecular Rapid Communications, EarlyView.
Acrylic pro‐drugs of 17β‐estradiol were subjected to spatially controlled two‐photon polymerization to create bespoke microneedle geometries with potential biomedical applications for long‐term transdermal hormone delivery. ABSTRACT Two‐photon polymerization (TPP) is a powerful technique to create microscale structures with high precision, offering ...
Yang Lou, John T. Leman, Harper Serringer, Ke Xia, Christopher N. LaFratta, Chaitanya Ullal, Edmund F. Palermo   +6 more
wiley   +1 more source

Recent Advances in the Laser‐Based Fabrication and Applications of High‐Entropy Alloy Nanoparticles

MetalMat, EarlyView.
This review presents recent advances in the laser‐based fabrication of high‐entropy alloy nanoparticles, focusing on scalable, environmentally friendly, and compositionally tunable synthesis methods. It highlights the critical influence of laser parameters on nanoparticle size, phase, and morphology, enabling tailored properties for applications in ...
Bibek Kumar Singh, Rajesh Rawat, Archana Tiwari, Venugopal Rao Soma, Ajay Tripathi   +4 more
wiley   +1 more source

Ultrashort time-to-echo MRI of the cartilagenous endplate and relationship to degenerative disc disease and schmorl's nodes [PDF]

, 2011
Session - The Short of ItINTRODUCTION: The vertebral endplate is composed of an inner bony and outer cartilaginous endplates (CEP). The CEP supplies the intervertebral disc (IVD) with nutrients and metabolites, and is instrumental for metabolism ...
Anthony, M, Chan, Q, Cheung, KMC, Khong, PL, Kim, M, Law, TK, Samartzis, D   +6 more
core  

Acceleration of Phase‐Modulated Ultrashort Echo Time Sequence for Fast T2 and Adiabatic T1ρ Mapping of the Knee Joints

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop and validate an accelerated phase‐modulated ultrashort echo time (PM‐UTE) sequence for volumetric T2 and adiabatic T1ρ (AdiabT1ρ) mapping of both short‐ and long‐T2 tissues in the knee joint. Methods The proposed method estimates and removes the T1‐dependent component from a single reference acquisition, eliminating repeated
Jiyo S. Athertya, Dina Moazamian, Niloofar Shojaeiadib, Jiaji Wang, Xin Shen, Saeed Jerban, Jiang Du, Yajun Ma   +7 more
wiley   +1 more source

Design of Differential Single‐Block and Multi‐Block Presaturated Ultrashort Echo Time Pulse Sequences for Fast and Flexible Short‐T2 Imaging

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultrashort echo time (UTE) techniques are essential for the magnetic resonance imaging of short‐T2 signals. Current UTE techniques are time‐consuming and often require the acquisition of an inflexible volume. In this work, we implement new UTE sequences—differential single‐block presaturated UTE (δSB‐UTE) and differential multi‐block ...
Jason A. Reich, Shannon L. Taylor, Kevin D. Harkins, Rachelle L. Crescenzi, Erin L. MacMillan, Rebecca E. Feldman   +5 more
wiley   +1 more source

Three-Dimensional Ultrashort Echo Time (3D UTE) Imaging

, 2023
Carl, Michael, Jang, Hyungseok, Ma, Yajun, Fung, Maggie, Du, Jiang   +4 more
openaire   +3 more sources

Simulation Insights Into Enhanced Emitter Contact Passivation via LECO on Industrial TOPCon Solar Cells

Progress in Photovoltaics: Research and Applications, EarlyView.
Numerical simulations were employed to boost industrial TOPCon cells from 25.5% to 26.07% by suppressing J0e,metal,eff without compromising ρc with a dual optimization strategy: (1) engineering the selective emitter sheet resistance (Rsh_SE) to 117 Ω/□ and (2) reducing the LECO‐induced partial metal contact ratio (fpmc) to 1%.
Jiayu Xu, Yun Qin, Zhiyuan Zhang, Wei Fan, Wu Zhang, Qun Liu, Jiaji Lin, Yuhao Cheng, Ning Song, Bram Hoex, Lang Zhou, Fa‐Jun Ma   +11 more
wiley   +1 more source

Ultrasound attenuation of cortical bone correlates with biomechanical, microstructural, and compositional properties

European Radiology Experimental
Background We investigated the relationship of two commonly used quantitative ultrasound (QUS) parameters, speed of sound (SoS) and attenuation coefficient (α), with water and macromolecular contents of bovine cortical bone strips as measured with ...
Saeed Jerban, Victor Barrere, Behnam Namiranian, Yuanshan Wu, Salem Alenezi, Erik Dorthe, Darryl Dlima, Sameer B. Shah, Christine B. Chung, Jiang Du, Michael P. Andre, Eric Y. Chang   +11 more
doaj   +1 more source