FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Pulsatility Index Formula

Fx Copy

LaTeX Copy

The Pulsatility Index (PI) (also known as the Gosling index) is a calculated flow parameter in ultrasound, derived from the maximum, minimum, and mean Doppler frequency shifts. Check FAQs

PI = \frac{v systole - v diastole}{v avg}

PI - Pulsatility Index?v_systole - Peak Systolic Velocity?v_diastole - Minimum Diastolic Velocity?v_avg - Average Velocity in terms of Cardiac Cycle?

Pulsatility Index Example

With values

With units

Only example

Here is how the Pulsatility Index equation looks like with Values.

Here is how the Pulsatility Index equation looks like with Units.

Here is how the Pulsatility Index equation looks like.

0.0267 = \frac{18 - 16}{75}

0.0267 = \frac{18m/s - 16m/s}{75m/s}

0.0267 = \frac{18 - 16}{75}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Chemistry » Category

Biochemistry » Category

Hemodynamics » fx Pulsatility Index

Pulsatility Index Solution

Follow our step by step solution on how to calculate Pulsatility Index?

FIRST Step Consider the formula

PI = \frac{v systole - v diastole}{v avg}

Next Step Substitute values of Variables

∴

PI = \frac{18m/s - 16m/s}{75m/s}

Next Step Prepare to Evaluate

∴

PI = \frac{18 - 16}{75}

Next Step Evaluate

∴

PI = 0.0266666666666667

LAST Step Rounding Answer

∴

PI = 0.0267

Pulsatility Index Formula Elements

Variables

Pulsatility Index

The Pulsatility Index (PI) (also known as the Gosling index) is a calculated flow parameter in ultrasound, derived from the maximum, minimum, and mean Doppler frequency shifts.

Symbol: PI

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Pulsatility Index

Peak Systolic Velocity

Peak Systolic Velocity (PSV) is an index measured in spectral Doppler ultrasound. The peak systolic velocity corresponds to each tall “peak” in the spectrum window.

Symbol: v_systole

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Peak Systolic Velocity

Minimum Diastolic Velocity

The Minimum Diastolic Velocity on a Doppler waveform, corresponds to the point marked at the end of the cardiac cycle (just prior to the systolic peak).

Symbol: v_diastole

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Minimum Diastolic Velocity

Average Velocity in terms of Cardiac Cycle

Average Velocity in terms of cardiac cycle is defined as the mean of all different velocities in cardiac cycle.

Symbol: v_avg

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Average Velocity in terms of Cardiac Cycle

Other formulas in Hemodynamics category

Go Mean Arterial Pressure

MAP = DP + ((\frac{1}{3}) \cdot (SP - DP))

Go Pulse Pressure

PP = 3 \cdot (MAP - DP)

Go Pulse Wave Velocity using Moens-Korteweg equation

PWV = \sqrt{\frac{E \cdot h 0}{2 \cdot ρ blood \cdot R 0}}

Go Elastic (Tangent) Modulus using Hughes equation

E = E 0 \cdot \exp (ζ \cdot P)

How to Evaluate Pulsatility Index?

Pulsatility Index evaluator uses Pulsatility Index = (Peak Systolic Velocity-Minimum Diastolic Velocity)/Average Velocity in terms of Cardiac Cycle to evaluate the Pulsatility Index, The Pulsatility Index (PI) (also known as the Gosling index) is a calculated flow parameter in ultrasound, derived from the maximum, minimum, and mean Doppler frequency shifts during a defined cardiac cycle. Pulsatility Index is denoted by PI symbol.

How to evaluate Pulsatility Index using this online evaluator? To use this online evaluator for Pulsatility Index, enter Peak Systolic Velocity (v_systole), Minimum Diastolic Velocity (v_diastole) & Average Velocity in terms of Cardiac Cycle (v_avg) and hit the calculate button.

FAQs on Pulsatility Index

What is the formula to find Pulsatility Index?

The formula of Pulsatility Index is expressed as Pulsatility Index = (Peak Systolic Velocity-Minimum Diastolic Velocity)/Average Velocity in terms of Cardiac Cycle. Here is an example- 0.026667 = (18-16)/75.

How to calculate Pulsatility Index?

With Peak Systolic Velocity (v_systole), Minimum Diastolic Velocity (v_diastole) & Average Velocity in terms of Cardiac Cycle (v_avg) we can find Pulsatility Index using the formula - Pulsatility Index = (Peak Systolic Velocity-Minimum Diastolic Velocity)/Average Velocity in terms of Cardiac Cycle.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Pulsatility Index Formula

Pulsatility Index Example

Pulsatility Index Solution

Pulsatility Index Formula Elements

Other formulas in Hemodynamics category

How to Evaluate Pulsatility Index?

FAQs on Pulsatility Index

Variable Name