Results 31 to 40 of about 23,419 (256)

Creating hemodynamic atlases of cardiac 4D flow MRI [PDF]

Journal of Magnetic Resonance Imaging, 2017
PurposeHemodynamic atlases can add to the pathophysiological understanding of cardiac diseases. This study proposes a method to create hemodynamic atlases using 4D Flow magnetic resonance imaging (MRI). The method is demonstrated for kinetic energy (KE) and helicity density (Hd).Materials and MethodsThirteen healthy subjects underwent 4D Flow MRI at 3T.
Merih Cibis, Mariana Bustamante, Jonatan Eriksson, Carl-Johan Carlhäll, Tino Ebbers   +4 more
openaire   +3 more sources

Comparison of 4D Flow MRI to 2D Flow MRI in the pulmonary arteries in healthy volunteers and patients with pulmonary hypertension.

PLoS ONE, 2019
PURPOSE:4D and 2D phase-contrast MRI (2D Flow MRI, 4D Flow MRI, respectively) are increasingly being used to noninvasively assess pulmonary hypertension (PH).
Malte Maria Sieren, Clara Berlin, Thekla Helene Oechtering, Peter Hunold, Daniel Drömann, Jörg Barkhausen, Alex Frydrychowicz   +6 more
doaj   +1 more source

Splanchnic flow analysis in 4D flow MRI: scan-rescan reproducibility of flow and image quality. [PDF]

Abdom Radiol (NY)
Abstract Introduction Assessing the splanchnic circulation may increase understanding and guide management of hepatic disorders. The purpose of this study is to evaluate the scan-rescan reproducibility of abdominal 4D Flow MRI in the splanchnic circulation, to assess the reproducibility of ...
Roos PR, Tushuizen ME, Westenberg JJM, Lamb HJ.   +3 more
europepmc   +4 more sources

Hemodynamic Profiles Before and After Surgery in Bicuspid Aortic Valve Disease—A Systematic Review of the Literature

Frontiers in Cardiovascular Medicine, 2021
Bicuspid aortic valve (BAV) disease presents a unique management challenge both pre- and post-operatively. 4D flow MRI offers multiple tools for the assessment of the thoracic aorta in aortic valve disease.
Daniel G. W. Cave, Hannah Panayiotou, Malenka M. Bissell   +2 more
doaj   +1 more source

Spiral readouts for 4D flow MRI [PDF]

Journal of Cardiovascular Magnetic Resonance, 2012
The feasibility of using spiral readouts to reduce the scan time of 4D flow MRI without sacrificing data quality was investigated.
Sigfridsson Andreas, Petersson Sven, Carlhall Carl, Ebbers Tino   +3 more
openaire   +2 more sources

Accelerated aortic 4D flow MRI with wave‐CAIPI [PDF]

Magnetic Resonance in Medicine, 2020
PurposeThe aim of this study was to investigate the acceleration potential of wave‐CAIPI (controlled aliasing in parallel imaging) for 4D flow MRI, provided that image quality and precision of flow parameters are maintained.MethodsThe 4D flow MRIs with acceleration factor R = 2 were performed on 10 healthy volunteers, using both wave‐CAIPI and standard
Julian A. J. Richter, Tobias Wech, Andreas M. Weng, Manuel Stich, Ning Jin, Aleksander Kosmala, Thorsten A. Bley, Herbert Köstler   +7 more
openaire   +2 more sources

4DFlowNet: Super-Resolution 4D Flow MRI Using Deep Learning and Computational Fluid Dynamics

Frontiers in Physics, 2020
4D flow magnetic resonance imaging (MRI) is an emerging imaging technique where spatiotemporal 3D blood velocity can be captured with full volumetric coverage in a single non-invasive examination.
Edward Ferdian, Avan Suinesiaputra, Avan Suinesiaputra, David J. Dubowitz, Debbie Zhao, Alan Wang, Alan Wang, Brett Cowan, Brett Cowan, Alistair A. Young, Alistair A. Young   +10 more
doaj   +1 more source

Four-Dimensional Flow MRI for the Evaluation of Aortic Endovascular Graft: A Pilot Study

Diagnostics, 2023
We aimed to explore the feasibility of 4D flow magnetic resonance imaging (MRI) for patients undergoing thoracic aorta endovascular repair (TEVAR). We retrospectively evaluated ten patients (two female), with a mean (±standard deviation) age of 61 ± 20 ...
Paolo Righini, Francesco Secchi, Daniela Mazzaccaro, Daniel Giese, Marina Galligani, Dor Avishay, Davide Capra, Caterina Beatrice Monti, Giovanni Nano   +8 more
doaj   +1 more source

Right and left ventricular function and flow quantification in pediatric patients with repaired tetralogy of Fallot using four-dimensional flow magnetic resonance imaging

BMC Medical Imaging, 2021
Background To assess the accuracy and reproducibility of right ventricular (RV) and left ventricular (LV) function and flow measurements in children with repaired tetralogy of Fallot (rTOF) using four-dimensional (4D) flow, compared with conventional two-
Xiaofen Yao, Liwei Hu, Yafeng Peng, Fei Feng, Rongzhen Ouyang, Weihui Xie, Qian Wang, Aimin Sun, Yumin Zhong   +8 more
doaj   +1 more source

Feasibility and validation of trans-valvular flow derived by four-dimensional flow cardiovascular magnetic resonance imaging in patients with atrial fibrillation [version 2; peer review: 2 approved]

Wellcome Open Research, 2021
Background: Four-dimensional (4D) flow cardiovascular magnetic resonance imaging (MRI) is an emerging technique used for intra-cardiac blood flow assessment. The role of 4D flow cardiovascular MRI in the assessment of trans-valvular flow in patients with
Mark T Mills, Ciaran Grafton-Clarke, Gareth Williams, Rebecca C Gosling, Abdulaziz Al Baraikan, Andreas L Kyriacou, Paul D Morris, Julian P Gunn, Peter P Swoboda, Eylem Levelt, Vasiliki Tsampasian, Rob J van der Geest, Andrew J Swift, John P Greenwood, Sven Plein, Vass Vassiliou, Pankaj Garg   +16 more
doaj   +1 more source