Results 11 to 20 of about 396,810 (295)
4D Flow cardiovascular magnetic resonance consensus statement: 2023 update [PDF]
Journal of Cardiovascular Magnetic Resonance, 2023 Hemodynamic assessment is an integral part of the diagnosis and management of cardiovascular disease. Four-dimensional cardiovascular magnetic resonance flow imaging (4D Flow CMR) allows comprehensive and accurate assessment of flow in a single ...
Malenka M. Bissell +40 more
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Heart applications of 4D flow [PDF]
Cardiovascular Diagnosis and Therapy, 2020 Four-dimensional (4D) flow sequences are an innovative type of MR sequences based upon phase contrast (PC) sequences which are a type of application of Angio-MRI together with the Time of Flight (TOF) sequences and Contrast-Enhanced Magnetic Resonance Acquisition (CE-MRA).
Corrias G. +5 more
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Advances in machine learning applications for cardiovascular 4D flow MRI [PDF]
Frontiers in Cardiovascular Medicine, 2022 Four-dimensional flow magnetic resonance imaging (MRI) has evolved as a non-invasive imaging technique to visualize and quantify blood flow in the heart and vessels.
Eva S. Peper +9 more
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Probabilistic 4D Blood Flow Mapping [PDF]
, 2010 Blood flow and tissue velocity can be measured using phase-contrast MRI. In this work, the statistical properties of 4D phase-contrast images are derived, and a novel probabilistic blood flow mapping method based on sequential Monte Carlo sampling is presented.
Ola Friman +5 more
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Combined free-running four-dimensional anatomical and flow magnetic resonance imaging with native contrast using Synchronization of Neighboring Acquisitions by Physiological Signals [PDF]
Journal of Cardiovascular Magnetic Resonance: Background: Four-dimensional (4D) flow magnetic resonance imaging (MRI) often relies on the injection of gadolinium- or iron-oxide-based contrast agents to improve vessel delineation.
Mariana B.L. Falcão +13 more
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Validation of two accelerated 4D flow MRI sequences at 3 T: a phantom study [PDF]
European Radiology Experimental, 2019 Background Four-dimensional (4D) flow magnetic resonance imaging (MRI) sequences with advanced parallel imaging have the potential to reduce scan time with equivalent image quality and accuracy compared with standard two-dimensional (2D) flow MRI.
Sebastian Ebel +7 more
doaj +2 more sources
4D flow imaging with UNFOLD in a reduced FOV [PDF]
Magnetic Resonance in Medicine, 2019 PurposeTwo‐dimensional selective excitation (2DRF) allows shortening 4D flow scan times by reducing the FOV, but the longer 2DRF pulse duration decreases the temporal resolution, yielding underestimated peak flow values. Multiple k‐space lines per cardiac phase, nl ≥ 2, are commonly applied in 4D flow MRI to shorten the inherent long scan times.
Clarissa Wink +4 more
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4D Flow MRI Applications for Aortic Disease [PDF]
Magnetic Resonance Imaging Clinics of North America, 2015 Aortic disease is routinely monitored with anatomic imaging, but until the recent advent of 3-directional phase contrast MRI (4D) flow, blood flow abnormalities have gone undetected. 4D flow measures aortic hemodynamic markers quickly. Qualitative flow visualization has spurred the investigation of new quantitative markers.
Burris, NS, Hope, MD
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From 6d flows to 4d flows [PDF]
Journal of High Energy Physics, 2019 Abstract SCFTs in six dimensions are interrelated by networks of RG flows. Compactifying such models on a Riemann surface with flux for the 6d global symmetry, one can obtain a wide variety of theories in four dimensions. These four dimensional models are also related by a network of RG flows.
Razamat, Shlomo +2 more
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Measuring blood flow and pulsatility with MRI: optimisation, validation and application in cerebral small vessel disease [PDF]
, 2023 Cerebral small vessel disease (SVD) is the breakdown of the small blood vessels of the brain, leading to many cases of stroke and dementia. The pathophysiology of SVD is largely unknown, although several mechanisms have been suggested. One such mechanism
Morgan, Alasdair
core +1 more source