scholarly journals Visualizing Carotid Blood Flow Simulations for Stroke Prevention

2021 ◽  
Vol 40 (3) ◽  
pp. 435-446
Author(s):  
P. Eulzer ◽  
M. Meuschke ◽  
C. M. Klingner ◽  
K. Lawonn
Keyword(s):  
Blood Flow ◽  
Stroke Prevention ◽  
Carotid Blood Flow ◽  
Flow Simulations

scholarly journals Model Verification and Error Sensitivity of Turbulence-Related Tensor Characteristics in Pulsatile Blood Flow Simulations

Fluids ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Magnus Andersson ◽  
Matts Karlsson
Keyword(s):  
Blood Flow ◽  
Model Verification ◽  
Patient Specific ◽  
Flow Modeling ◽  
Spatiotemporal Resolution ◽  
Flow Simulations ◽  
Phase Averaging ◽  
Confidence Levels ◽  
Cardiovascular Flow ◽  
Computational Fluid Dynamics Cfd

Model verification, validation, and uncertainty quantification are essential procedures to estimate errors within cardiovascular flow modeling, where acceptable confidence levels are needed for clinical reliability. While more turbulent-like studies are frequently observed within the biofluid community, practical modeling guidelines are scarce. Verification procedures determine the agreement between the conceptual model and its numerical solution by comparing for example, discretization and phase-averaging-related errors of specific output parameters. This computational fluid dynamics (CFD) study presents a comprehensive and practical verification approach for pulsatile turbulent-like blood flow predictions by considering the amplitude and shape of the turbulence-related tensor field using anisotropic invariant mapping. These procedures were demonstrated by investigating the Reynolds stress tensor characteristics in a patient-specific aortic coarctation model, focusing on modeling-related errors associated with the spatiotemporal resolution and phase-averaging sampling size. Findings in this work suggest that attention should also be put on reducing phase-averaging related errors, as these could easily outweigh the errors associated with the spatiotemporal resolution when including too few cardiac cycles. Also, substantially more cycles are likely needed than typically reported for these flow regimes to sufficiently converge the phase-instant tensor characteristics. Here, higher degrees of active fluctuating directions, especially of lower amplitudes, appeared to be the most sensitive turbulence characteristics.

Correlation between Carotid Blood Flow and Brain Atrophy in Patients with Multi-Infarct Dementia

Gerontology ◽  
1989 ◽  
Vol 35 (4) ◽  
pp. 192-197 ◽  
Author(s):  
K. Yamashita ◽  
S. Kobayashi ◽  
S. Yamaguchi ◽  
M. Kitani ◽  
K. Okada ◽  
...  
Keyword(s):  
Blood Flow ◽  
Brain Atrophy ◽  
Carotid Blood Flow

Changes in carotid blood flow and electrocardiogram in humans during and after walking on a treadmill

1993 ◽  
Vol 67 (6) ◽  
pp. 486-491 ◽  
Author(s):  
Jufang He ◽  
Zheng-Lin Jiang ◽  
Hiroyuki Tanaka ◽  
Toshitaka Ikehara ◽  
Akira Takahashi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Carotid Blood Flow

Experiences with surgical thrombosis of intracranial berry aneurysms and carotid cavernous fistulas

1974 ◽  
Vol 41 (6) ◽  
pp. 657-670 ◽  
Author(s):  
Sean Mullan
Keyword(s):  
Blood Flow ◽  
Intracranial Aneurysm ◽  
Carotid Cavernous Fistula ◽  
Content Type ◽  
Cavernous Fistula ◽  
Carotid Blood Flow ◽  
Giant Intracranial Aneurysm ◽  
Surgical Methods ◽  
Carotid Cavernous Fistulas ◽  
Fine Print

✓ The results of 61 cases of stereotaxic thrombosis of intracranial berry aneurysms indicate that the technique in selected cases is comparable to, but not necessarily superior to standard surgical methods. The results of wire-induced thrombosis in 15 cases of giant intracranial aneurysm suggest that this method is effective in situations where clipping and encapsulation are inapplicable. The results of thrombosis in six cases of carotid cavernous fistula suggest that intracavernous wire thrombosis may prove to be the treatment of choice in that it seals the fistula without impairing carotid blood flow.

scholarly journals Carotid Blood Flow During REM Sleep

SLEEP ◽  
2008 ◽  
Vol 31 (5) ◽  
pp. 701-707 ◽  
Author(s):  
Marcella Calasso ◽  
Pier Luigi Parmeggiani
Keyword(s):  
Blood Flow ◽  
Rem Sleep ◽  
Carotid Blood Flow

scholarly journals Effect of chronic cervical ganglionectomy on the spontaneous variability of internal carotid blood flow in the conscious rat

2012 ◽  
Vol 97 (5) ◽  
pp. 564-571 ◽  
Author(s):  
Aurélia Revel ◽  
Clément Gallet ◽  
Valérie Oréa ◽  
Bruno Chapuis ◽  
Christian Barrès ◽  
...  
Keyword(s):  
Blood Flow ◽  
Internal Carotid ◽  
Conscious Rat ◽  
Carotid Blood Flow

scholarly journals Correlation of Carotid Blood Flow and Carotid Flow Time With Invasive Cardiac Output Measurements

CHEST Journal ◽  
2016 ◽  
Vol 150 (4) ◽  
pp. 297A
Author(s):  
Irene Ma ◽  
Joshua Caplin ◽  
Aftab Azad ◽  
Christina Wilson ◽  
Michael Fifer ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cardiac Output ◽  
Flow Time ◽  
Carotid Blood Flow ◽  
Cardiac Output Measurements ◽  
Carotid Flow
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