scholarly journals OP29.03: The evaluation of placental volume and placental bed blood flow dynamic by real-time 3D ultrasonography

2010 ◽  
Vol 36 (S1) ◽  
pp. 137-137
Author(s):  
W. Gou
Keyword(s):  
Blood Flow ◽  
Real Time ◽  
Flow Dynamic ◽  
Blood Flow Dynamic ◽  
3D Ultrasonography ◽  
Placental Volume

Cerebrovascular Blood Flow Dynamic Changes in Fetuses with Congenital Heart Disease

2009 ◽  
Vol 25 (1) ◽  
pp. 167-172 ◽  
Author(s):  
Lv Guorong ◽  
Li Shaohui ◽  
Jin Peng ◽  
Lin Huitong ◽  
Li Boyi ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Congenital Heart ◽  
Flow Dynamic ◽  
Dynamic Changes ◽  
Blood Flow Dynamic

Blood flow dynamic improvement with aneurysm repair detected by a patient-specific model of multiple aortic aneurysms

2013 ◽  
Vol 29 (3) ◽  
pp. 404-412 ◽  
Author(s):  
Koichi Sughimoto ◽  
Yoshiharu Takahara ◽  
Kenji Mogi ◽  
Kenji Yamazaki ◽  
Ken’ichi Tsubota ◽  
...  
Keyword(s):  
Blood Flow ◽  
Specific Model ◽  
Aortic Aneurysms ◽  
Patient Specific ◽  
Flow Dynamic ◽  
Blood Flow Dynamic ◽  
Aneurysm Repair

Influence of Carotid Artery Stenosis Location on Lesion Progression Using Computational Fluid Dynamics

2020 ◽  
Author(s):  
Muhamed Albadawi ◽  
Yasser Abuouf ◽  
Shinichi Ookawara ◽  
Mahmoud Ahmed
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Blood Flow ◽  
Shear Stress ◽  
Carotid Artery ◽  
Three Dimensional ◽  
Flow Dynamic ◽  
Maximum Value ◽  
Dynamic Factors ◽  
Blood Flow Dynamic

Abstract Atherosclerosis is a major arterial disease characterized by the thickening of the arteries’ walls. The development of stenosis at the carotid bifurcation affects the local variations in blood flow dynamic factors. The carotid artery dynamic factors: including the wall shear stress (WSS), time-averaged wall shear stress (TAWSS) and pressure gradient affect the rate of progression of the stenosis. It is essential to analyze the flow in three-dimensional reconstructed patient-specific geometries with realistic boundary conditions to estimate the blood flow dynamic factors. Hence, a three-dimensional comprehensive model is developed including the non-Newtonian blood flow under pulsatile flow conditions. The model is numerically simulated using computational fluid dynamics solvers along with the medical imaging to investigate the effect of stenosis locations on its progression. The numerically predicted blood flow dynamic factors are analyzed. It was found that the blood flow dynamic factors have the importance to influence the diagnosis and prediction of asymptomatic carotid artery stenosis progression. Based on results, the value of TAWSS at the stenosis in the stenotic Common Carotid Artery (CCA) is 46.68 Pa comparing to 19.24 Pa and 10.049 Pa in Internal Carotid Artery (ICA) and External Carotid Artery (ECA) respectively. Also, it was found that the maximum value of WSS in the healthy artery at the bifurcation with 3.829 Pa. However, in stenotic arteries the maximum value for WSS located at the stenosis throat which was found to be 102.158 Pa for CCA comparing to 46.859 Pa in ICA and 33.658 Pa in ECA.

1618: Real-Time Monitoring of Nitric Oxide and Blood Flow During Ischemia-Reperfusion in the Rat Testis

2006 ◽  
Vol 175 (4S) ◽  
pp. 521-521
Author(s):  
Motoaki Saito ◽  
Tomoharu Kono ◽  
Yukako Kinoshita ◽  
Itaru Satoh ◽  
Keisuke Satoh
Keyword(s):  
Nitric Oxide ◽  
Blood Flow ◽  
Real Time ◽  
Ischemia Reperfusion ◽  
Real Time Monitoring ◽  
Rat Testis

Hybrid MPI-MRI System for Dual-Modal In Situ Cardiovascular Assessments of Real-Time 3D Blood Flow Quantification—A Pre-Clinical In Vivo Feasibility Investigation

2020 ◽  
Vol 39 (12) ◽  
pp. 4335-4345
Author(s):  
Jochen Franke ◽  
Nicoleta Baxan ◽  
Heinrich Lehr ◽  
Ulrich Heinen ◽  
Sebastian Reinartz ◽  
...  
Keyword(s):  
Blood Flow ◽  
Real Time ◽  
Flow Quantification ◽  
Blood Flow Quantification

scholarly journals Ultrasound Doppler-guided real-time navigation of a magnetic microswarm for active endovascular delivery

2021 ◽  
Vol 7 (9) ◽  
pp. eabe5914 ◽  
Author(s):  
Qianqian Wang ◽  
Kai Fung Chan ◽  
Kathrin Schweizer ◽  
Xingzhou Du ◽  
Dongdong Jin ◽  
...  
Keyword(s):  
Blood Flow ◽  
Real Time ◽  
Targeted Delivery ◽  
Ex Vivo ◽  
Dynamic Environments ◽  
Doppler Imaging ◽  
Great Promise ◽  
Mean Velocity ◽  
Ultrasound Doppler ◽  
Flowing Blood

Swarming micro/nanorobots offer great promise in performing targeted delivery inside diverse hard-to-reach environments. However, swarm navigation in dynamic environments challenges delivery capability and real-time swarm localization. Here, we report a strategy to navigate a nanoparticle microswarm in real time under ultrasound Doppler imaging guidance for active endovascular delivery. A magnetic microswarm was formed and navigated near the boundary of vessels, where the reduced drag of blood flow and strong interactions between nanoparticles enable upstream and downstream navigation in flowing blood (mean velocity up to 40.8 mm/s). The microswarm-induced three-dimensional blood flow enables Doppler imaging from multiple viewing configurations and real-time tracking in different environments (i.e., stagnant, flowing blood, and pulsatile flow). We also demonstrate the ultrasound Doppler–guided swarm formation and navigation in the porcine coronary artery ex vivo. Our strategy presents a promising connection between swarm control and real-time imaging of microrobotic swarms for localized delivery in dynamic environments.

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