Results 11 to 20 of about 3,288 (238)

Clinical ultrashort echo time imaging of bone and other connective tissues [PDF]

NMR in Biomedicine, 2006
AbstractThe background underpinning the clinical use of ultrashort echo time, SPRITE and other pulse sequences for imaging bone and other connective tissues with short T2 is reviewed. Features of the basic physics relevant to UTE imaging are described, including the consequences when the radiofrequency pulse duration is of the order of T2 so that ...
Matthew D Robson, Graeme M Bydder
exaly   +6 more sources

2D Ultrashort Echo‐Time Functional Lung Imaging [PDF]

Journal of Magnetic Resonance Imaging, 2020
BackgroundImaging of the lung by MRI is challenging due to the intrinsic low proton density and rapid T2* relaxation. MRI methods providing lung parenchyma and function are in demand.PurposeTo investigate the feasibility of two‐dimensional ultrashort echo‐time (2D UTE) imaging for lung function assessment.Study TypeProspective.PopulationEleven healthy ...
Anke Balasch, Patrick Metze, Kilian Stumpf, Meinrad Beer, Susanne M. Büttner, Wolfgang Rottbauer, Tobias Speidel, Volker Rasche   +7 more
core   +9 more sources

Ultrashort echo time and zero echo time MRI at 7T [PDF]

Magnetic Resonance Materials in Physics, Biology and Medicine, 2015
Zero echo time (ZTE) and ultrashort echo time (UTE) pulse sequences for MRI offer unique advantages of being able to detect signal from rapidly decaying short-T2 tissue components. In this paper, we applied 3D ZTE and UTE pulse sequences at 7T to assess differences between these methods.We matched the ZTE and UTE pulse sequences closely in terms of ...
Peder E. Z. Larson, Misung Han, Roland Krug, Angela Jakary, Sarah J. Nelson, Daniel B. Vigneron, Roland G. Henry, Graeme McKinnon, Douglas A. C. Kelley   +8 more
openaire   +7 more sources

Feasibility of ultrashort echo time quantitative susceptibility mapping with a 3D cones trajectory in the human brain [PDF]

Frontiers in Neuroscience, 2022
PurposeQuantitative susceptibility mapping (QSM) has surfaced as a promising non-invasive quantitative biomarker that provides information about tissue composition and microenvironment.
Hyungseok Jang, Sam Sedaghat, Jiyo S. Athertya, Dina Moazamian, Michael Carl, Yajun Ma, Xing Lu, Alicia Ji, Eric Y. Chang, Eric Y. Chang, Jiang Du, Jiang Du, Jiang Du   +12 more
doaj   +3 more sources

Clinical application of ultrashort echo-time MRI for lung pathologies in children [PDF]

Clinical Radiology, 2021
Lung magnetic resonance imaging (MRI) is considered to be challenging, because the low proton density of the tissue, fast signal decay, and respiratory artefacts hamper adequate image quality. MRI of the lungs and thorax is increasingly used in the paediatric population, because it is a radiation-free alternative to chest CT.
Geiger, Julia, Zeimpekis, K G, Jung, A, Moeller, A, Kellenberger, C J   +4 more
openaire   +6 more sources

An Update in Qualitative Imaging of Bone Using Ultrashort Echo Time Magnetic Resonance [PDF]

Frontiers in Endocrinology, 2020
Bone is comprised of mineral, collagenous organic matrix, and water. X-ray-based techniques are the standard approach for bone evaluation in clinics, but they are unable to detect the organic matrix and water components in bone.
Saeed Jerban, Douglas G. Chang, Yajun Ma, Hyungseok Jang, Eric Y. Chang, Eric Y. Chang, Jiang Du   +6 more
doaj   +2 more sources

Ultrashort echo time MRI of pulmonary water content: assessment in a sponge phantom at 1.5 and 3.0 Tesla [PDF]

Diagnostic and Interventional Radiology, 2014
PURPOSEWe aimed to develop a predictive model for lung water content using ultrashort echo time (UTE) magnetic resonance imaging (MRI) and a sponge phantom.
Francesco Molinari, Ananth J. Madhuranthakam,, Robert Lenkinski, Alexander A. Bankier   +3 more
doaj   +2 more sources

Quantitative magnetization transfer ultrashort echo time imaging of the Achilles tendon. [PDF]

Magnetic resonance in medicine, 2011
Ultrashort echo time imaging allows the short T(2) Achilles tendon to be directly visualized with MRI. Radiofrequency saturation 1 kHz or less off-resonance has been used previously to improve image contrast. In this study, magnetization transfer was investigated in the Achilles tendon of eight normal volunteers and one patient with psoriatic arthritis.
Hodgson, Richard J., Evans, Robert, Wright, Peter, Grainger, Andrew J., O'connor, Philip J., Helliwell, Philip, Mcgonagle, Dennis, Emery, Paul, Robson, Matthew D.   +8 more
core   +6 more sources

Triangular Fibrocartilage Characterization with Ultrashort Echo Time-T2* MRI: Insights from a Healthy Cohort [PDF]

Life
The objective of this study is to measure T2* relaxation time in the triangular fibrocartilage (TFC) disc in asymptomatic volunteers and evaluate its variation with factors such as age, hand dominance, sex, and ulnar variance, using a dedicated MRI ...
Sana Boudabbous, Hicham Bouredoucen, David Ferreira Branco, Stefan Sommer, Tom Hilbert, Pierre-Alexandre Poletti, Rares Salomir, Bénédicte Marie Anne Delattre   +7 more
doaj   +2 more sources

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   +2 more sources