Results 51 to 60 of about 4,993 (209)

Simultaneous Quantitative Susceptibility Mapping of Articular Cartilage and Cortical Bone of Human Knee Joint Using Ultrashort Echo Time Sequences

Frontiers in Endocrinology, 2022
BackgroundIt is of great clinical importance to assess the microstructure of the articular cartilage and cortical bone of the human knee joint. While quantitative susceptibility mapping (QSM) is a promising tool for investigating the knee joint, however,
Ming Zhang, Zhihui Li, Hanqi Wang, Tongtong Chen, Yong Lu, Fuhua Yan, Yuyao Zhang, Hongjiang Wei   +7 more
doaj   +1 more source

Characterization of Pulmonary Dysfunction in Systemic Juvenile Idiopathic Arthritis Using Xenon and Proton MRI. [PDF]

Pediatr Pulmonol
ABSTRACT Introduction Systemic juvenile idiopathic arthritis‐associated lung disease (SJIA‐LD) is increasingly recognized and associated with potentially life‐threatening complications. Diagnosis is challenging as SJIA‐LD is complex and frequently presents with subtle or no respiratory symptoms, necessitating CT imaging or other tests to detect budding
Garrison WJ, Willmering MM, Masokano BI, Rai S, Daou AW, Roach DJ, Morgan EM, Woods JC, Cleveland ZI, Gecili E, Guillerman RP, Schapiro AH, Schulert GS, Grom AA, Towe CT, Walkup LL.   +15 more
europepmc   +2 more sources

T2-based temperature monitoring in bone marrow for MR-guided focused ultrasound. [PDF]

, 2016
BackgroundCurrent clinical protocols for MR-guided focused ultrasound (MRgFUS) treatment of osseous lesions, including painful bone metastases and osteoid osteomas, rely on measurement of the temperature change in adjacent muscle to estimate the ...
Bucknor, Matthew, Han, Misung, Krug, Roland, Ozhinsky, Eugene, Rieke, Viola   +4 more
core   +1 more source

DREAMER: Rapid and Simultaneous Multiple Contrast Magnetic Resonance Imaging of Solid and Soft Tissue. [PDF]

Magn Reson Med
ABSTRACT Purpose Pediatric craniofacial imaging may involve examination of both the skull and brain tissues via CT and MRI, respectively. DREAMER (Dual Repetition and Echo Acquisition with Multi‐contrast Encoding and Reconstruction) simultaneously acquires solid‐ and soft‐tissue images, potentially providing a rapid, high‐resolution, and radiation‐free
Vu BD, Kamona N, Wehrli FW, Deshpande RS, Song HK, Hu A, Baccaglini E, Bartlett SP, Rajapakse CS.   +8 more
europepmc   +2 more sources

Ultrashort echo time magnetic resonance fingerprinting (UTE‐MRF) for simultaneous quantification of long and ultrashort T₂ tissues [PDF]

Magnetic Resonance in Medicine, 2019
PurposeTo demonstrate an ultrashort echo time magnetic resonance fingerprinting (UTE‐MRF) method that allows quantifying relaxation times for muscle and bone in the musculoskeletal system and generating bone enhanced images that mimic CT scans.MethodsA fast imaging steady‐state free precession MRF sequence with half pulse excitation and half projection
Qing Li, Xiaozhi Cao, Huihui Ye, Congyu Liao, Hongjian He, Jianhui Zhong   +5 more
openaire   +3 more sources

Fat suppression for ultrashort echo time imaging using a novel soft-hard composite radiofrequency pulse. [PDF]

, 2019
PurposeTo design a soft-hard composite pulse for fat suppression and water excitation in ultrashort echo time (UTE) imaging with minimal short T2 signal attenuation.MethodsThe composite pulse contains a narrow bandwidth soft pulse centered on the fat ...
Chang, Eric Y, Du, Jiang, Jang, Hyungseok, Jerban, Saeed, Ma, Ya-Jun   +4 more
core   +1 more source

MR-orthopantomography in operative dentistry and oral and maxillofacial surgery: a proof of concept study

Scientific Reports, 2023
This prospective study aimed to present, compare, and evaluate the suitability of five different magnetic resonance imaging (MRI) protocols (3D double-echo steady-state (DESS), 3D fast spin echo short-tau inversion recovery (SPACE-STIR), 3D fast spin ...
Adib Al-Haj Husain, Valérie Schmidt, Silvio Valdec, Bernd Stadlinger, Sebastian Winklhofer, Daphne Schönegg, Stefan Sommer, Mutlu Özcan, Nadin Al-Haj Husain, Marco Piccirelli   +9 more
doaj   +1 more source

Quantitative ultrashort echo time (UTE) MRI of human cortical bone: Correlation with porosity and biomechanical properties [PDF]

Journal of Bone and Mineral Research, 2012
Abstract In this study we describe the use of ultrashort echo time (UTE) magnetic resonance imaging (MRI) to evaluate short and long T2* components as well as the water content of cortical bone. Fourteen human cadaveric distal femur and proximal tibia were sectioned to produce 44 rectangular slabs of cortical bone for quantitative UTE MR
W. Bae, Peter Chen, C. Chung, K. Masuda, Darryl D'Lima, J. Du   +5 more
semanticscholar   +3 more sources

Three‐dimensional ultrashort echo time cones T_1ρ (3D UTE‐cones‐T_1ρ) imaging [PDF]

NMR in Biomedicine, 2017
We report a novel three‐dimensional (3D) ultrashort echo time (UTE) sequence employing Cones trajectory and T1ρ preparation (UTE‐Cones‐T1ρ) for quantitative T1ρ assessment of short T2 tissues in the musculoskeletal system. A basic 3D UTE‐Cones sequence was combined with a spin‐locking preparation pulse for T1ρ contrast.
Ya‐Jun Ma, Michael Carl, Hongda Shao, Anthony S. Tadros, Eric Y. Chang, Jiang Du   +5 more
openaire   +4 more sources

Bicomponent Mapping of Cortical Bone Using a New Interleaved UTE Imaging Sequence. [PDF]

Magn Reson Med
ABSTRACT Purpose Ultrashort echo time (UTE) MRI enables direct imaging of cortical bone and quantification of its water compartments via bicomponent T2* modeling. However, conventional approaches require multiple separate dual‐echo scans due to limitations in gradient power. This approach is prone to inter‐scan inconsistencies such as motion and signal
Shin SH, Athertya JS, Suprana A, Lo J, Wang J, Moazamian D, Chapelin F, Ma Y.   +7 more
europepmc   +2 more sources