Results 81 to 90 of about 4,993 (209)

Advanced magnetic resonance imaging of cartilage components in haemophilic joints reveals that cartilage hemosiderin correlates with joint deterioration. [PDF]

, 2019
IntroductionEvidence suggests that toxic iron is involved in haemophilic joint destruction.AimTo determine whether joint iron deposition is linked to clinical and imaging outcomes in order to optimize management of haemophilic joint disease.MethodsAdults
Barnes, Richard FW, Berman, Zachary, Chang, Eric Y, Du, Jiang, Jang, Hyungseok, Ma, Yajun, von Drygalski, Annette, Wong, Jonathan H   +7 more
core   +2 more sources

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

3D inversion recovery ultrashort echo time MRI can detect demyelination in cuprizone-treated mice

Frontiers in Neuroimaging
PurposeTo test the ability of inversion-recovery ultrashort echo time (IR-UTE) MRI to directly detect demyelination in mice using a standard cuprizone mouse model.MethodsNon-aqueous myelin protons have ultrashort T2s and are “invisible” with conventional
Adam C. Searleman, Yajun Ma, Srihari Sampath, Srinath Sampath, Robert Bussell, Eric Y. Chang, Eric Y. Chang, Lisa Deaton, Andrew M. Schumacher, Jiang Du, Jiang Du, Jiang Du   +11 more
doaj   +1 more source

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

Markerless attenuation correction for carotid MRI surface receiver coils in combined PET/MR imaging. [PDF]

, 2015
The purpose of the study was to evaluate the effect of attenuation of MR coils on quantitative carotid PET/MR exams. Additionally, an automated attenuation correction method for flexible carotid MR coils was developed and evaluated.The attenuation of the
Bini, J, Calcagno, C, Eldib, M, Faul, DD, Fayad, ZA, Robson, PM, Tsoumpas, C   +6 more
core   +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

High‐resolution ultrashort echo time (UTE) imaging on human knee with AWSOS sequence at 3.0 T [PDF]

Journal of Magnetic Resonance Imaging, 2011
AbstractPurpose:To demonstrate the technical feasibility of high‐resolution (0.28–0.14 mm) ultrashort echo time (UTE) imaging on human knee at 3T with the acquisition‐weighted stack of spirals (AWSOS) sequence.Materials and Methods:Nine human subjects were scanned on a 3T MRI scanner with an 8‐channel knee coil using the AWSOS sequence and isocenter ...
Yongxian, Qian, Ashley A, Williams, Constance R, Chu, Fernando E, Boada   +3 more
openaire   +2 more sources

Data‐Driven Characterization of Knee Structures Using Non‐Negative Matrix Factorization of 3D Multi‐Echo UTE MRI

NMR in Biomedicine, Volume 39, Issue 6, June 2026.
Non‐negative matrix factorization (NMF) can derive tissue features in a data‐driven manner without relying on biophysical model assumptions. First‐time application of NMF to 3D multi‐echo UTE knee MRI revealed four reproducible components associated with tissues of fast and slow transverse relaxation, water–fat mixture (chemical shift), and fat tissue.
Céline Smekens, Pieter Van Dyck, Patrick S. Fuchs, Jan Sijbers, Thomas Janssens, Ben Jeurissen   +5 more
wiley   +1 more source

Ultrashort Echo Time (UTE) imaging of receptor targeted magnetic iron oxide nanoparticles in mouse tumor models [PDF]

Journal of Magnetic Resonance Imaging, 2013
PurposeThe purpose of this study was to investigate an ultrashort echo time (UTE) imaging approach for improving the detection of receptor targeted magnetic nanoparticles in cancer xenograft models using positive contrast.Materials and MethodsIron oxide nanoparticle (IONP) conjugated with tumor targeting ligands were prepared.
Liya, Wang, Xiaodong, Zhong, Weiping, Qian, Jing, Huang, Zehong, Cao, Qiqi, Yu, Malgorzata, Lipowska, Run, Lin, Andrew, Wang, Lily, Yang, Hui, Mao   +10 more
openaire   +2 more sources

Preclinical Quantitative In Vivo MRI Assessment of Exogenous Surfactant Pulmonary Distribution After Clinically Relevant Intratracheal Delivery

NMR in Biomedicine, Volume 39, Issue 6, June 2026.
Quantitative in vivo contrast‐enhanced UTE MRI enables sensitive and precise mapping of pulmonary surfactant distribution, revealing peripheral localization and homogeneous distal penetration under physiological conditions. Comparison with ex vivo models highlights the role of physiological processes in surfactant retention.
Oumaima Marfouk, Rémy Gérard, Ghalia Kaouane, Lara Leclerc, Noël Pinaud, Michael Fayon, Sophie Périnel‐Ragey, Jérémie Pourchez, Eric Dumas De La Roque, Yannick Crémillieux   +9 more
wiley   +1 more source