Politecnico di Torino - Corso Duca degli Abruzzi, 24 - 10129 Torino, ITALY

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Atherosclerotic plaque progressionHemodynamic indicesPeripheral resistance measurement


Software for the analysis of mathematical data on arterial flow detected by angiography, nuclear non-magnetic resonance and eco-doppler. the software aims to include in the duplex test results some parameters that have had an important prognostic significance in our experimental and clinical studies in determining patients at risk for progression of atherosclerotic disease at different levels, and for the success of arterial reconstruction.

Technical features

Analysis of flow data with a new software capable of determining in real time – turbulence index (it), the ratio between the highest speed and the lowest flow speed recorded in each arterial tract. An index greater than 5 predisposes to the progression of the atherosclerotic plaque and the failure of an arterial reconstruction (endovascular or open). The software applied to the duplex allows to determine the highest and lowest speed measured during the examination and the turbulence index is born from this ratio. Current peripheral resistance index (irpa) ratio between the speed before and after an arterial segment or arterial reconstruction. An index greater than 2 predisposes to atherosclerotic plaque progression or reconstruction failure. The software applied to the duplex allows you to determine the speeds measured during the exam and the current peripheral resistance index is born from their relationship. Predicted peripheral resistance index (irpp) inverse ratio between flow velocity after injection of papaverine and base at the level of a certain arterial segment.

Possible Applications

  • Cardiology;
  • Vascular surgery.


  • Identification of patients at high risk for progression of coronary or carotid atherosclerosis;
  • Ability to identify arterial reconstructions at risk for failure.