Carotid artery corrected flow time and respiratory variations of peak blood flow velocity for prediction of hypotension after induction of general anesthesia in adult patients undergoing elective surgery: a prospective observational study. J Ultrasound Med. 2020;39(4):721–30. Article PubMed Google ...
(B) The inlet velocity and outlet pressure profiles in three cardiac cycles. Full size image Fluid properties and boundary conditions In the blood flow simulation of the carotid artery, blood was considered incompressible, non-Newtonian, and the fluid regime was laminar. The Carreau–Yasuda model ...
Representative ultrasound images for different types of advanced carotid plaques in study participants; (A). ulcerated plaque; (B). plaque with low-level echo; (C). plaque with heterogeneous echo. Full size image Assessment of arterial stenosis Transcranial Doppler sonography was performed by two ex...
Methods:We identified all patients with ICA stenosis >70% based on hemodynamic consensus criteria (peak systolic velocity >230cm/s) in our peripheral vascular laboratory from January 2013 through December 2016. With a retrospective chart review, demographics, comorbid conditions, medications, ...
Carotid ultrasound was performed on the right CCA using an ultrasound scanner equipped with a 10 MHz linear probe (MyLab 70, Esaote, Genova, Italy) and implemented with a previously validated radiofrequency-based tracking of the arterial wall (QAS®) that allows an automatic and real-time det...
The blood flow visualization and velocity magnitudes were compared between 4D flow MRI analysis and CFD simulations. Figure 1. Flow chart of the hemodynamic analysis process of 4D flow MRI (first row) and CFD (second row). Segmentation using ITK-SNAP was included in the 4D flow MRI workflow....
The flow chart of the methodology of our study was presented in Figure 1. First, the theoretical model of IPG-based carotid pulse measurement was established. Second, the IPG device was designed for testing the concept. Third, the calculation method for impedance change induced by carotid artery...
The measurements were conducted over a minimum of a 10 mm length on both sides at the far wall in the common carotid artery, longitudinal and perpendicular to the ultrasound beam, in the lateral view, at least 5 mm proximal to the bifurcation in an area with clearly defined lumen-intima ...
The purpose of the present study was to determine whether cerebral hyperperfusion after revascularization inhibits development of cerebral ischemic lesions due to artery-to-artery emboli during exposure of the carotid arteries in carotid endarterectomy (
Figure 1.Flow chart of the hemodynamic velocity, and the flow pattern comparison process between four-dimensional (4D) flow magnetic resonance imaging (MRI) and computational fluid dynamics (CFD). 2.3. Magnetic Resonance (MR) Imaging Protocol ...