Results 101 to 110 of about 6,676 (242)

A pilot study of short T2* measurements with ultrashort echo time imaging at 0.35 T

BioMedical Engineering OnLine, 2018
Purpose Ultrashort echo time (UTE) sequences play a key role in imaging and quantifying short T2 species. However, almost all of the relevant studies was conducted at relatively high fields. The purpose of this work was to further explore the feasibility
Xiuyuan Chen, Bensheng Qiu
doaj   +1 more source

Optically induced coherent intra-band dynamics in disordered semiconductors

, 2001
On the basis of a tight-binding model for a strongly disordered semiconductor with correlated conduction- and valence band disorder a new coherent dynamical intra-band effect is analyzed. For systems that are excited by two, specially designed ultrashort
A. Haché, A. Haché, B. Golding, C. Schlichenmaier, C. Sieh, Ch. Lonsky, D. Bennhardt, D. Brinkmann, Dai-Sik Kim, E.L. Hahn, G. Khitrova, G. Noll, I. Varga, I.D. Abella, I.L. Aleiner, J. Stippler, J.E. Graebner, J.L. Black, M. Lindberg, N.A. Kurnit, O.M. Becker, P. Thomas, R. Atanasov, S. Sauter-Fischer, S. W. Koch, S. Weiser, S.W. Koch, T. Meier, V.V. Samartsev, W. Niggemeier   +29 more
core   +1 more source

Enhanced Nonlinear Optical Absorption Properties and Carrier Dynamics of Violet Phosphorene by Oxidation for Ultrafast Photonic Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study investigates the effects of oxidation treatment on the nonlinear optical absorption properties and carrier dynamics of two‐dimensional violet phosphorene (VP), elucidating the underlying physical mechanisms. Furthermore, ultrashort laser pulses are achieved utilizing the enhanced saturation absorption and shortened carrier relaxation ...
Bo Li, Han Pan, Qingling Tang, Zhongben Pan, Hongwei Chu, Ying Li, Dechun Li   +6 more
wiley   +1 more source

Quantitative MRI Musculoskeletal Techniques: An Update. [PDF]

, 2019
OBJECTIVE. For many years, MRI of the musculoskeletal system has relied mostly on conventional sequences with qualitative analysis. More recently, using quantitative MRI applications to complement qualitative imaging has gained increasing interest in the
Chang, Eric Y, de Mello, Ricardo, Du, Jiang, Ji, Yang, Ma, Yajun   +4 more
core   +1 more source

Quantitative Ultrashort Echo Time Magnetic Resonance Imaging: Perfusion [PDF]

, 2023
Zeng, Chun, Du, Jiang, Athertya, Jiyo, Bydder, Graeme M   +3 more
openaire   +2 more sources

Ultrashort Echo Time Imaging of Phosphorus in Man

, 2012
The 31P nucleus is NMR-visible and exists throughout the human body. The MRI/MRS community has principally focused on the 31P in the high-energy metabolites, which have relatively long T2s. However, using short echo time (TE) methods, it is possible to obtain signal from the short P that is present in the hydroxyapatite of the bone matrix. This article
openaire   +1 more source

Sizing and concentration analysis of cfDNA using Biabooster technology: Results from a prospective plasma‐based collection of 77 patients with locally advanced unresectable esophageal cancer

International Journal of Cancer, EarlyView.
What's New? This study introduces a novel approach for detecting locally advanced esophageal carcinoma using cell‐free DNA (cfDNA) analysis through a highly sensitive fragmentome assay. Unlike traditional sequencing‐based methods that are limited by the absence of specific mutations in esophageal tumors, our method offers an alternative by quantifying ...
Anouchka Modesto, Sophie Gibert, Caroline Delmas, David Tougeron, Amaury Paumier, Alexandre Taillez, Samuel Le Sourd, Delphine Argo Leignel, Philippe Ronchin, Ariane Darut Jouve, Véronique Vendrely, Olivier Riou, Jérôme Martin‐Babau, Thomas Leroy, Laurent Quéro, Naïma Hanoun, Pierre Cordelier, Veronica Pezzella, Jean Pierre Delord, Rosine Guimbaud, Elizabeth Moyal, Catherine Seva   +21 more
wiley   +1 more source

Assessment of lung deformation in patients with idiopathic pulmonary fibrosis with elastic registration technique on pulmonary three-dimensional ultrashort echo time MRI

Insights into Imaging
Objective To assess lung deformation in patients with idiopathic pulmonary fibrosis (IPF) using with elastic registration algorithm applied to three-dimensional ultrashort echo time (3D-UTE) MRI and analyze relationship of lung deformation with the ...
Xiaoyan Yang, Pengxin Yu, Haishuang Sun, Mei Deng, Anqi Liu, Chen Li, Wenyan Meng, Wenxiu Xu, Bingbing Xie, Jing Geng, Yanhong Ren, Rongguo Zhang, Min Liu, Huaping Dai   +13 more
doaj   +1 more source

Yet more evidence that non-aqueous myelin lipids can be directly imaged with ultrashort echo time (UTE) MRI on a clinical 3T scanner: a lyophilized red blood cell membrane lipid study

NeuroImage
Direct imaging of semi-solid lipids, such as myelin, is of great interest as a noninvasive biomarker of neurodegenerative diseases. Yet, the short T2 relaxation times of semi-solid lipid protons hamper direct detection through conventional magnetic ...
Soo Hyun Shin, Dina Moazamian, Arya Suprana, Chun Zeng, Jiyo S. Athertya, Michael Carl, Yajun Ma, Hyungseok Jang, Jiang Du   +8 more
doaj   +1 more source

MRI-derived bone porosity index correlates to bone composition and mechanical stiffness

Bone Reports, 2019
The MRI-derived porosity index (PI) is a non-invasively obtained biomarker based on an ultrashort echo time sequence that images both bound and pore water protons in bone, corresponding to water bound to organic collagenous matrix and freely moving water,
Abigail L. Hong, Mikayel Ispiryan, Mugdha V. Padalkar, Brandon C. Jones, Alexandra S. Batzdorf, Snehal S. Shetye, Nancy Pleshko, Chamith S. Rajapakse   +7 more
doaj   +1 more source