Results 61 to 70 of about 14,640 (199)

Accelerated Stack-of-Spirals Free-Breathing Three-Dimensional Ultrashort Echo Time Lung Magnetic Resonance Imaging: A Feasibility Study in Patients With Breast Cancer

Frontiers in Oncology, 2021
PurposeTo investigate the clinical feasibility of accelerated free-breathing stack-of-spirals (spiral) three-dimensional (3D) ultrashort echo time (UTE) lung magnetic resonance imaging (MRI) using iterative self‐consistent parallel imaging reconstruction
Min Jae Cha, Hye Shin Ahn, Hyewon Choi, Hyun Jeong Park, Thomas Benkert, Josef Pfeuffer, Mun Young Paek   +6 more
doaj   +1 more source

Whole-Brain Myelin Imaging Using 3D Double-Echo Sliding Inversion Recovery Ultrashort Echo Time (DESIRE UTE) MRI [PDF]

Radiology, 2020
Background Signal contamination from long T2 water is a major challenge in direct imaging of myelin with MRI. Nulling of the unwanted long T2 signals can be achieved with an inversion recovery (IR) preparation pulse to null long T2 white matter within the brain. The remaining ultrashort T2 signal from myelin can be detected with an ultrashort echo time
Ya-Jun Ma, Adam C. Searleman, Hyungseok Jang, Jonathan Wong, Eric Y. Chang, Jody Corey-Bloom, Graeme M. Bydder, Jiang Du   +7 more
openaire   +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

MRI-derived bone porosity index correlates to bone composition and mechanical stiffness

Bone Reports, 2019
The MRI-derived porosity index (PI) is a non-invasively obtained biomarker based on an ultrashort echo time sequence that images both bound and pore water protons in bone, corresponding to water bound to organic collagenous matrix and freely moving water,
Abigail L. Hong, Mikayel Ispiryan, Mugdha V. Padalkar, Brandon C. Jones, Alexandra S. Batzdorf, Snehal S. Shetye, Nancy Pleshko, Chamith S. Rajapakse   +7 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

Conical ultrashort echo time (UTE) MRI in the evaluation of pediatric acute appendicitis [PDF]

Abdominal Radiology, 2018
Magnetic resonance imaging (MRI) sequences with conical k-space trajectories are able to decrease motion artifacts while achieving ultrashort echo times (UTE). We assessed the performance of free-breathing conical UTE MRI in the evaluation of the pediatric pelvis for suspected appendicitis.Our retrospective review of 84 pediatric patients who underwent
Albert T, Roh, Zhibo, Xiao, Joseph Y, Cheng, Shreyas S, Vasanawala, Andreas M, Loening   +4 more
openaire   +2 more sources

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

Bi-Exponential 3D UTE-T1ρ Relaxation Mapping of Ex Vivo Human Knee Patellar Tendon at 3T

Bioengineering
Introduction: The objective of this study was to assess the bi-exponential relaxation times and fractions of the short and long components of the human patellar tendon ex vivo using three-dimensional ultrashort echo time T1ρ (3D UTE-T1ρ) imaging ...
Bhavsimran Singh Malhi, Dina Moazamian, Soo Hyun Shin, Jiyo S. Athertya, Livia Silva, Saeed Jerban, Hyungseok Jang, Eric Chang, Yajun Ma, Michael Carl, Jiang Du   +10 more
doaj   +1 more source

To Cross or Not to Cross: Using MRI-Histology to Characterize Dense Collagenous Plaque in Critical Limb Ischemia

Methodist DeBakey Cardiovascular Journal, 2023
Peripheral artery disease (PAD) is caused by atherosclerotic buildup in the lower extremities, leading to obstruction and inadequate perfusion to the peripheral vasculature.
Kajol J. Shah, Bright Benfor, Christof Karmonik, Alan B. Lumsden, Trisha L. Roy   +4 more
doaj   +1 more source

Quantitative MRI measurements of the Achilles tendon in spondyloarthritis using ultrashort echo times [PDF]

The British Journal of Radiology, 2012
Tendon involvement is common in spondyloarthritis. The MRI signal from the Achilles tendon has been used to quantify mechanical tendinopathy; however, conventional MRI is limited by the short T(2) of normal tendon. Short and ultrashort echo time (UTE) MRI have the potential to better measure signal intensity reflecting changes in T(2) or gadolinium ...
Hodgson, Richard J., Menon, N., Grainger, A. J., O'Connor, P. J., McGonagle, D., Helliwell, P., Emery, P., Robson, M. D.   +7 more
openaire   +3 more sources