In addition to the patented PaR-technology, which is convenient when both flow velocity and arterial blood pressure signals are available, a new technique for the analysis of flow velocity alone was published in 2012. This technique proposes the use of new parameters for the numerical representation of pulsatile signals in order to better represent it's hemodynamic properties. 

 

These parameters are based upon the Theory of Arterial Acceleration.

 

The first clinical study making use of these new parameters was published in 2017

 

A new method for age correction and graphical representation of the new parameters was published in 2018

 

Applying age corrected Z-scores for the analysis of changes in middle cerebral artery flow velocity after carotid endarterectomy was published in 2021

  • M. Schaafsma, G.J. Glade, B.J.A.M. Keller, A. Schaafsma, Age corrected changes in intracranial haemodynamics after carotid endarterectomy. J. Cardiovascular Surgery. 2021 Apr 8. doi: 10.23736/S0021-9509.21.11705-7.