Results 1 to 10 of about 3,039 (204)

Quantitative Ultrashort Echo Time (UTE) Magnetic Resonance Imaging of Bone: An Update [PDF]

Frontiers in Endocrinology, 2020
Bone possesses a highly complex hierarchical structure comprised of mineral (~45% by volume), organic matrix (~35%) and water (~20%). Water exists in bone in two forms: as bound water (BW), which is bound to bone mineral and organic matrix, or as pore ...
Ya-Jun Ma, Saeed Jerban, Hyungseok Jang, Douglas Chang, Eric Y. Chang, Eric Y. Chang, Jiang Du   +6 more
doaj   +7 more sources

Assessing cortical bone mechanical properties using collagen proton fraction from ultrashort echo time magnetization transfer (UTE-MT) MRI modeling [PDF]

Bone Reports, 2019
Cortical bone shows as a signal void when using conventional clinical magnetic resonance imaging (MRI). Ultrashort echo time MRI (UTE-MRI) can acquire high signal from cortical bone, thus enabling quantitative assessments.
Saeed Jerban, Yajun Ma, Erik W. Dorthe, Lena Kakos, Nicole Le, Salem Alenezi, Robert L. Sah, Eric Y. Chang, Darryl D'Lima, Jiang Du   +9 more
doaj   +4 more sources

Estimation of Trabecular Bone Volume with Dual-Echo Ultrashort Echo Time (UTE) Magnetic Resonance Imaging (MRI) Significantly Correlates with High-Resolution Computed Tomography (CT) [PDF]

Journal of Imaging
Trabecular bone architecture has important implications for the mechanical strength of bone. Trabecular elements appear as signal void when imaged utilizing conventional magnetic resonance imaging (MRI) sequences.
Karen Y. Cheng, Dina Moazamian, Behnam Namiranian, Hamidreza Shaterian Mohammadi, Salem Alenezi, Christine B. Chung, Saeed Jerban   +6 more
doaj   +2 more sources

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 [PDF]

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   +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

Prospective UTE two-component MRI analysis of graft ligamentization after ACL reconstruction and association with demographic and surgical factors [PDF]

European Radiology Experimental
Background We aimed to evaluate longitudinal changes in ultrashort echo time (UTE) two-component biomarkers reflecting graft ligamentization after anterior cruciate ligament (ACL) reconstruction and to identify associated clinical factors.
Takeshi Fukuda, Akira Ogihara, Takenori Yonenaga, Daisuke Kubota, Hiroteru Hayashi, Ryuichi Itou, Hisashi Kitagawa, Katsutosi Murata, Stefan Sommer   +8 more
doaj   +2 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

Temporal changes in native and late gadolinium enhanced ultrashort echo time magnetic resonance imaging during gynecologic cancer radiation therapy [PDF]

Physics and Imaging in Radiation Oncology
Background and purpose: Radiotherapy (RT) response in gynecologic cancers varies widely and is influenced by several factors. We evaluated whether fibrosis detected with inversion-recovery ultrashort-echo-time (IR-UTE) MRI (magnetic-resonance-imaging ...
Khadija Sheikh, Bruce L. Daniel, Michael Roumeliotis, Junghoon Lee, Thomas Benkert, Himanshu Bhat, Pan Su, Ravi T. Seethamraju, Daniel Y. Song, Akila N. Viswanathan, Ehud J. Schmidt   +10 more
doaj   +2 more sources

Quantitative assessment of lumbar intervertebral disc degeneration and its correlation with clinical symptoms: a study utilizing ultrashort time-of-echo and T2 mapping as biomarkers [PDF]

BMC Musculoskeletal Disorders
Background Lumbar cartilage endplate (CEP) structures show low signal intensity on conventional magnetic resonance imaging (MRI), making them hard to observe and quantify.
Jun Han, Xiang Hong Meng, Zhilin Ji, Feige Niu, Nana Zhu, Tingting Zhao, Zhiwei Shen, Zhi Wang, Qiang Yang   +8 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