Results 51 to 60 of about 3,039 (204)

Ultrashort Echo Time, MRI porosity index, and suppression ratio correlate with the cortical bone microstructural and mechanical properties [PDF]

, 2023
The cortical bone porous microstructure can be evaluated using ultrashort echo time (UTE) MRI. UTE-MRI-based evaluation of bone has been underutilized partly due to the high cost and time demands of MRI in general.
Alenezi, Salem, Athertya, Jiyo, Chang, Eric, Chung, Christine, Dlima, Darryl, Dorthe, Erik, Du, Jiang, Jang, Hyungseok, Jerban, Saeed, Ma, Yajun, Moazamian, Dina, Woods, Gina   +11 more
core   +1 more source

3D Cartesian ultrashort double half-echo imaging of the lung parenchyma for water density imaging. [PDF]

Magn Reson Med
Abstract Purpose Develop and illustrate a 3D double half‐echo Cartesian UTE method for spin‐density weighted imaging of the lung parenchyma and calculation of lung water density (LWD). Methods A 3D gradient‐echo pulse sequence was modified to acquire half‐echoes, to enable UTEs (TE/TR = 145 μs/1.2 ms), with an acquired resolution of 3.125 mm by 3.125 ...
Thompson RB, Keen C, Coulden R, Jones H, Stobbe RW, Grenier JG.   +5 more
europepmc   +2 more sources

On the accuracy and reproducibility of a novel probabilistic atlas-based generation for calculation of head attenuation maps on integrated PET/MR scanners [PDF]

, 2017
Purpose To propose an MR-based method for generating continuous-valued head attenuation maps and to assess its accuracy and reproducibility. Demonstrating that novel MR-based photon attenuation correction methods are both accurate and reproducible is ...
Catana, Ciprian, Chen, Kevin T., Chonde, Daniel B., Izquierdo-Garcia, David, Poynton, Clare B.   +4 more
core   +1 more source

Quantitative two‐dimensional ultrashort echo time magnetization transfer (2D UTE‐MT) imaging of cortical bone [PDF]

Magnetic Resonance in Medicine, 2017
PurposeTo investigate quantitative 2D ultrashort echo time magnetization transfer (UTE‐MT) imaging in ex vivo bovine cortical bone and in vivo human tibial cortical bone.MethodsData were acquired from five fresh bovine cortical bone samples and five healthy volunteer tibial cortical bones using a 2D UTE‐MT sequence on a clinical 3T scanner.
Ma, Ya‐Jun, Tadros, Anthony, Du, Jiang, Chang, Eric Y   +3 more
openaire   +4 more sources

MR Imaging of the Pelvic Bones: The Current and Cutting-Edge Techniques

Journal of the Belgian Society of Radiology, 2022
This review presents an overview of the spectrum of the current and cutting-edge MRI techniques for pelvic bone imaging in clinical practice. The current MRI sequences and their advantages, disadvantages and usefullness in the imaging of this complex ...
Lieve Morbée, Elke Vereecke, Frederiek Laloo, Min Chen, Nele Herregods, Lennart Jans   +5 more
doaj   +1 more source

Advances in osteoarthritis imaging: What will make it into clinical practice? [PDF]

, 2016
This is the final version of the article. It first appeared from the British Orthopaedic Association via http://www.boa.ac.uk/publications/jto-vol-4-issue-3/© British Orthopaedic Association 2016 Osteoarthritis is one of the fastest increasing global ...
Graves, Martin, Kaggie, Joshua, McCaskie, Andrew, McDonnell, Stephen, Turmezei, Tom   +4 more
core   +1 more source

A Useful Combination of Quantitative Ultrashort Echo Time MR Imaging and a Probing Device for Biomechanical Evaluation of Articular Cartilage

Biosensors, 2021
In this study, we combined quantitative ultrashort echo time (UTE) magnetic resonance (MR) imaging and an investigation by a probing device with tri-axial force sensor to seek correlations with mechanical properties of human patellar cartilage for in ...
Takehito Hananouchi, Yanjun Chen, Saeed Jerban, Masaru Teramoto, Yajun Ma, Erik W. Dorthe, Eric Y. Chang, Jiang Du, Darryl D. D’Lima   +8 more
doaj   +1 more source

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

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

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   +1 more source

MRI-based porosity index (PI) and suppression ratio (SR) in the tibial cortex show significant differences between normal, osteopenic, and osteoporotic female subjects

Frontiers in Endocrinology, 2023
IntroductionUltrashort echo time (UTE) MRI enables quantitative assessment of cortical bone. The signal ratio in dual-echo UTE imaging, known as porosity index (PI), as well as the signal ratio between UTE and inversion recovery UTE (IR-UTE) imaging ...
Saeed Jerban, Saeed Jerban, Saeed Jerban, Yajun Ma, Yajun Ma, Dina Moazamian, Jiyo Athertya, Sophia Dwek, Hyungseok Jang, Hyungseok Jang, Gina Woods, Christine B. Chung, Christine B. Chung, Eric Y. Chang, Eric Y. Chang, Jiang Du, Jiang Du   +16 more
doaj   +1 more source