Samsung SONOACE R7 Manual do Utilizador descarregar pdf (Página 187)

5-13

Chapter 5 Measurements and Calculations

 D Velocity

This is a basic measurement that is available in Spectral Doppler Mode only. You can specify two points

in a Spectral Doppler image and measure the distance between them, and the velocity at each point to

calculate the velocity change, time change and acceleration.

NOTE: In a Spectral Doppler image, the X- and Y-axes represent time and velocity, respectively.

Sele

ct D Velocity in

the

Soft Menu

[1]

D Velocity will appe

ar in the user information area.

Specify two points and then measure the shortest distance between them. The way that it is measured

is the same as in ‘Distance.’

Once measurement is done, the result is displayed on the screen.

X V1 : Velocity at Point 1

X V2 : Velocity at Point 2

X PGmax : Max Pressure Gradient

X V2-V1 : Change in Velocity

X Time : Change in Time

X Acc : Acceleration

X RI : Resistivity Index

X S/D : Systolic to Diastolic Ratio

The equations used for D Velocity measurement are as follows:

X

NOTE: If Application is set to Cardiac at Utility > Measure Setup > General > Caliper, the results

including Vmax, PGmax, V2-V1, Time, and Acc will be shown on the screen.

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Samsung SONOACE R7 Manual do Utilizador Página 187