Model-based assessment of dynamic arterial blood volume flow from ultrasound measurements

Abstract

Unfortunately, several errors occurred in Sect. 2.3.2 Statistical analysis, second paragraph.The corrected paragraph is given below.When considering a parameter X, the variability between the heartbeats of each measurement was evaluated by the intra-registration variability r h ; which can be written as follows: The inter-registration variability r m that evaluates the variability between the measurements of the volunteer can be written as:In this equation, X v,m is the parameter value of measurement m for volunteer v and X v the average parameter for each volunteer v. The number of measurements for the volunteer v and the number of volunteers are represented by m v and v respectively.The online version of the original article can be found under

Validation of a patient-specific hemodynamic computational model for surgical planning of vascular access in hemodialysis patients

“…26 Despite being rarely used in clinical studies, this assumption was recently shown to be reliable in estimating real BFV using US investigation. 27 Briefly, luminal diameter was first assessed and then maximum blood flow velocity was recorded for several cardiac cycles using pulsed-wave Doppler, sampling the central volume of the blood vessel (centerline velocity). The time average of maximum velocity spectrum was then calculated and used to estimate BFV as previously described.…”

Modeling regulation of vascular tone following muscle contraction: Model development, validation and global sensitivity analysis

“…The blood flow measurement were performed in pulsed-Doppler mode. Blood flow was estimated from mean blood flow velocity and vessel diameter using the Poiseuille formulation [28].…”

Clinical benefits of integrating cardiac and vascular models

“…Unfortunately, no general analytical solutions exist for pulsatile flow in curved and tapered tubes. Despite the fact that little is known about the estimation errors in blood volume flow induced by vessel curvature and tapering, Poiseuille or Womersley methods remain the standard for blood volume flow estimates based on velocity measurements [96].…”