The calculator for ultrasound and functional diagnostics doctors is an assistant in studies of extracranial arteries (neck vessels, BCA - “brachiocephalic arteries”) and intracranial level (TCDI, visualizing transcranial doppler, TCD).
For calculations, the average maximum flow rate TAMX (TAMAX, cm / sec) is used,
values of resistance indices (Ri), pulsations (Pi) and diameters in millimeters that the ultrasonic device produces.
Calculator features:
- Calculation of the average volumetric blood flow (Volume Flow) in the vertebral arteries.
- Calculation of intracranial pressure and perfusion pressure through MCA (middle cerebral artery) flows using two methods.
- Calculation of the diameter of the feeding artery, as well as the volume of AVM (arterio-venous malformation in the cranial cavity).
- Calculation of vasospasm indices (Lindegaard and Sviry index), determination of hyperdynamic flows, as well as the assessment of the severity of vasospasm by the color indication method.
- Conducting vascular reactivity and collateral blood flow tests -
calculations of indices of breath holding, ICWR, determination of the type of vascular response to the sample (negative -, paradoxical ±, positive +, sharply positive ++).
The menu is divided into sections:
Section V.flow - estimation of the volumetric blood flow, ICP using the Beller method, AVM calculations.
Section TCDI - Calculations of CPD and ICP on mean arterial pressure. Evaluation of vasospasm indices. Samples of collateral compensation and reactivity (MCA1 before the sample, MCA2 after the test).
For calculations, the average maximum flow rate TAMX (TAMAX, cm / sec) is used,
values of resistance indices (Ri), pulsations (Pi) and diameters in millimeters that the ultrasonic device produces.
Calculator features:
- Calculation of the average volumetric blood flow (Volume Flow) in the vertebral arteries.
- Calculation of intracranial pressure and perfusion pressure through MCA (middle cerebral artery) flows using two methods.
- Calculation of the diameter of the feeding artery, as well as the volume of AVM (arterio-venous malformation in the cranial cavity).
- Calculation of vasospasm indices (Lindegaard and Sviry index), determination of hyperdynamic flows, as well as the assessment of the severity of vasospasm by the color indication method.
- Conducting vascular reactivity and collateral blood flow tests -
calculations of indices of breath holding, ICWR, determination of the type of vascular response to the sample (negative -, paradoxical ±, positive +, sharply positive ++).
The menu is divided into sections:
Section V.flow - estimation of the volumetric blood flow, ICP using the Beller method, AVM calculations.
Section TCDI - Calculations of CPD and ICP on mean arterial pressure. Evaluation of vasospasm indices. Samples of collateral compensation and reactivity (MCA1 before the sample, MCA2 after the test).
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