Results 41 to 50 of about 15,984 (208)

Neural Fields for Highly Accelerated 2D Cine Phase Contrast MRI

Advanced Science, EarlyView.
ABSTRACT 2D cine phase contrast (CPC) MRI provides quantitative information on blood velocity and flow within the human vasculature. However, data acquisition is time‐consuming, motivating the reconstruction of the velocity field from undersampled measurements to reduce scan times. In this work, neural fields are proposed as a continuous spatiotemporal
Pablo Arratia, Martin J. Graves, Mary McLean, Carolin Pirkl, Carola‐Bibiane Schönlieb, Timo Schirmer, Florian Wiesinger, Matthias J. Ehrhardt   +7 more
wiley   +1 more source

Real-time target localization on 1.5 T magnetic resonance imaging linac orthogonal cine images using transfer learning

Physics and Imaging in Radiation Oncology
Background and purpose: Deep learning-based tumor tracking is promising for real-time magnetic-resonance-imaging (MRI)-guided radiotherapy. We investigate the applicability of a tumor tracking model developed for 0.35 T MRI-linac sagittal cine-MRI for 1 ...
Yiling Wang, Elia Lombardo, Jie Wang, Yu Fan, Yue Zhao, Stefanie Corradini, Claus Belka, Marco Riboldi, Christopher Kurz, Guillaume Landry   +9 more
doaj   +1 more source

Long-Term Neuropsychological Sequelae in HIV-Seronegative Cryptococcal Meningoencephalitis Patients with and without Ventriculoperitoneal Shunts: A Cine MRI Study

Behavioural Neurology, 2015
Background. Hydrocephalus in cryptococcal meningoencephalitis is most commonly managed with a ventriculoperitoneal shunt. This study applied cine magnetic resonance imaging (MRI) to evaluate initial disease severity on long-term cerebrospinal fluid (CSF)
Meng-Hsiang Chen, Cheng-Hsien Lu, Hung-Chen Wang, Hsiu-Ling Chen, Nai-Wen Tsai, Shau-Hsuan Li, Nai-Wen Hsu, Wei-Ming Lin, Chia-Te Kung, Wei-Che Lin   +9 more
doaj   +1 more source

DYNAMIC FUNCTIONAL MAGNETIC RESONANCE IMAGING OF TEMPOROMANDIBALAR JOINT

Сибирский научный медицинский журнал, 2020
The aim of the study was to compare the potential of fast pulse sequences and traditional static images for evaluation of temporomandibular joint (TMJ) biomechanics and to optimize the magnetic resonance imaging (MRI) protocol of TMJ by inclusion of ...
A. P. Dergilev, P. G. Sysolyatin, A. V. Sudarkina, I. A. Panin   +3 more
doaj   +1 more source

Pathophysiologic Consequences of Early Coarctation Stenting in a Longitudinal Porcine Model

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Novel stent technologies offer early intravascular treatment options for coarctation (COA). Mid‐to‐long‐term cardiovascular responses to early COA stent interventions are undefined. Aims We studied a porcine model of COA, with and without early stent implantation with serial dilation to adult aortic diameters, aiming to define ...
Leah M. Gober, Michael A. Stellon, Matt A. Culver, Amy Frenkel, Dana Irrer, Colleen M. Witzenburg, Alejandro Roldán‐Alzate, Luke Lamers   +7 more
wiley   +1 more source

An unsupervised deep learning method for multi-coil cine MRI [PDF]

Physics in Medicine & Biology, 2020
Abstract Deep learning has achieved good success in cardiac magnetic resonance imaging (MRI) reconstruction, in which convolutional neural networks (CNNs) learn a mapping from the undersampled k-space to the fully sampled images.
Ziwen Ke, Jing Cheng, Leslie Ying, Hairong Zheng, Yanjie Zhu, Dong Liang   +5 more
openaire   +3 more sources

Sacubitril/valsartan preserves regional cardiac function following myocardial infarction in rats

ESC Heart Failure, Volume 12, Issue 2, Page 1304-1315, April 2025.
Parts of the figure were drawn by using pictures from Servier Medical Art. Servier Medical Art by Servier is licensed under a Creative Commons Attribution 3.0 Unported License (https://creativecommons.org/licenses/by/3.0/). Abstract Aims Sacubitril/valsartan (Sac/Val) is used for treatment of heart failure. The effect of Sac/Val on regional dysfunction
Einar Sjaastad Nordén, Bård Andre Bendiksen, Kaja Knudsen Bergo, Emil Knut Stenersen Espe, Gary McGinley, Almira Hasic, Ida Marie Hauge‐Iversen, Hege Katrin Ugland, Xin Shen, Michael Frisk, Nishani S. Mabotuwana, William E. Louch, Rizwan I. Hussain, Lili Zhang, Ivar Sjaastad, Alessandro Cataliotti, Geir Christensen   +16 more
wiley   +1 more source

First experimental demonstration of magnetic resonance-guided multileaf collimator tracking for (ultra-)hypofractionated prostate radiotherapy

Physics and Imaging in Radiation Oncology
Background and purpose:: (Ultra-)hypofractionated radiotherapy is an effective treatment for localized prostate cancer, but intrafraction motion can increase toxicity and/or reduce treatment efficacy. Therefore, motion management is essential. This study
Prescilla Uijtewaal, Pim T.S. Borman, Peter L. Woodhead, Hans C.J. de Boer, Bas W. Raaymakers, Martin F. Fast   +5 more
doaj   +1 more source

Variations of MRI-assessed peristaltic motions during radiation therapy. [PDF]

PLoS ONE, 2018
PURPOSE:Understanding complex abdominal organ motion is essential for motion management in radiation therapy (RT) of abdominal tumors. This study investigates abdominal motion induced by respiration and peristalsis, during various time durations relevant
Farshad Mostafaei, An Tai, Eenas Omari, Yingqiu Song, James Christian, Eric Paulson, William Hall, Beth Erickson, X Allen Li   +8 more
doaj   +1 more source

Automatic evaluation of the Valsalva sinuses from cine-MRI

SPIE Proceedings, 2011
MRI appears to be particularly attractive for the study of the Sinuses of Valsalva (SV), however there is no global consensus on their suitable measurements. In this paper, we propose a new method, based on the mathematical morphology and combining a numerical geodesic reconstruction with an area estimation, to automatically evaluate the SV from a ...
Cédric Blanchard, Tadeusz Sliwa, Alain Lalande, Pauliah Mohan, Olivier Bouchot, Yvon Voisin   +5 more
openaire   +5 more sources