Results 1 to 10 of about 2,600 (141)

Ultrashort-Echo-Time MRI of the Disco-Vertebral Junction: Modulation of Image Contrast via Echo Subtraction and Echo Times [PDF]

Sensors
Introduction: The disco-vertebral junction (DVJ) of the lumbar spine contains thin structures with short T2 values, including the cartilaginous endplate (CEP) sandwiched between the bony vertebral endplate (VEP) and the nucleus pulposus (NP).
Karen C. Chen, Palanan Siriwananrangsun, Won C. Bae   +2 more
doaj   +6 more sources

Ultrashort Echo Time Double Echo Steady-State MRI for Quantitative Conductivity Mapping in the Knee: A Feasibility Study [PDF]

Tomography
Background/Objectives: Tissue conductivity reflects ionic composition (e.g., sodium), providing critical insights into various diseases. Ultrashort echo time quantitative conductivity mapping (UTE-QCM) offers a method to obtain this information, which is
Sam Sedaghat, Jin Il Park, Eddie Fu, Youngkyoo Jung, Hyungseok Jang   +4 more
doaj   +2 more sources

Articular Cartilage Assessment Using Ultrashort Echo Time MRI: A Review

Frontiers in Endocrinology, 2022
Articular cartilage is a major component of the human knee joint which may be affected by a variety of degenerative mechanisms associated with joint pathologies and/or the aging process. Ultrashort echo time (UTE) sequences with a TE less than 100 µs are
Amir Masoud Afsahi, Amir Masoud Afsahi, Sam Sedaghat, Dina Moazamian, Dina Moazamian, Ghazaleh Afsahi, Jiyo S. Athertya, Hyungseok Jang, Ya-Jun Ma   +8 more
doaj   +5 more sources

Outlook on zero/ultrashort echo time techniques in functional MRI. [PDF]

Magn Reson Med
Abstract Since its introduction more than 30 years ago, the blood oxygenation level dependent (BOLD) contrast remains the most widely used method for functional MRI (fMRI) in humans and animal models. The BOLD contrast is typically acquired with echo planar imaging (EPI) to obtain sensitization of the signal during the echo time (TE ...
Mangia S, Michaeli S, Gröhn O.
europepmc   +5 more sources

Ultrashort Echo Time Quantitative Susceptibility Source Separation in Musculoskeletal System: A Feasibility Study [PDF]

Journal of Imaging
This study aims to demonstrate the feasibility of ultrashort echo time (UTE)-based susceptibility source separation for musculoskeletal (MSK) imaging, enabling discrimination between diamagnetic and paramagnetic tissue components, with a particular focus
Sam Sedaghat, Jin Il Park, Eddie Fu, Annette von Drygalski, Yajun Ma, Eric Y. Chang, Jiang Du, Lorenzo Nardo, Hyungseok Jang   +8 more
doaj   +2 more sources

Effects of Motion in Ultrashort Echo Time Quantitative Susceptibility Mapping for Musculoskeletal Imaging [PDF]

Journal of Imaging
Quantitative susceptibility mapping (QSM) is a powerful magnetic resonance imaging (MRI) technique for assessing tissue composition in the human body. For imaging short-T2 tissues in the musculoskeletal (MSK) system, ultrashort echo time (UTE) imaging ...
Sam Sedaghat, Jinil Park, Eddie Fu, Fang Liu, Youngkyoo Jung, Hyungseok Jang   +5 more
doaj   +2 more sources

Whole-heart magnetic resonance imaging in 1 minute: Three-dimensional fast cardiac magnetic resonance imaging technique employing the non-Cartesian ultrashort echo time sequence [PDF]

Journal of Cardiovascular Magnetic Resonance
Background: Three-dimensional (3D) cardiovascular magnetic resonance angiography produces detailed images of the heart and its vascular surroundings. However, the technique is challenged in clinical settings for pediatric patients primarily due to the ...
Pezad Doctor, Munes Fares, Gerald Greil, Tarique Hussain, Qing Zou   +4 more
doaj   +2 more sources

Ultrashort echo time magnetic resonance imaging of the osteochondral junction. [PDF]

NMR Biomed, 2023
AbstractOsteoarthritis is a common chronic degenerative disease that causes pain and disability with increasing incidence worldwide. The osteochondral junction is a dynamic region of the joint that is associated with the early development and progression of osteoarthritis.
Lombardi AF, Guma M, Chung CB, Chang EY, Du J, Ma YJ.   +5 more
europepmc   +5 more sources

Qualitative and Quantitative Ultrashort Echo Time Imaging of Musculoskeletal Tissues [PDF]

Seminars in Musculoskeletal Radiology, 2015
Ultrashort echo time (UTE) sequences represent a group of clinically compatible techniques that are capable of using echo times < 1 ms. With these techniques, direct imaging of short T2/T2* tissues or tissue components can now be performed. Continuing modifications to the UTE techniques have allowed for faster and more robust sequences now comparable ...
Jiang Du, Won C Bae, Eric Y Chang
exaly   +5 more sources

The effect of cartilage dehydration and rehydration on quantitative ultrashort echo time biomarkers. [PDF]

Quant Imaging Med Surg, 2023
The effect of dehydration of ex vivo cartilage samples and rehydration with native synovial fluid or normal saline on quantitative ultrashort echo time (UTE) biomarkers are unknown. We aimed to investigate the effect of cartilage dehydration-rehydration on UTE biomarkers and to compare the rehydration capabilities of native synovial fluid and normal ...
Wan L, Searleman AC, Ma Y, Wong JH, Williams J, Murphy ME, Du J, Chang EY, Tang G.   +8 more
europepmc   +5 more sources