Samsung MYSONO U6 Bedienungsanleitung PDF herunterladen (Seite 187)

5-13

Chapter 5 Measurements and Calculations

D Velocity

This is a basic measurement that is only available in Spectral Doppler Mode. 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 change in speed, change in time, and acceleration.

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

1. Press Caliper and select D Velocity under soft menu [1]. ‘D Velocity’ is shown in the user information

area.

2. You can specify two points and measure the straight distance between them. The measurement

method is identical to ‘Distance’.

3. When the measurement is nished, its result is shown 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 speed.

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 under Utility > Measure Setup > General > Caliper is set to Cardiac,

results for Vmax, PGmax, V2-V1, Time, Acc, etc. are shown on the screen.

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Samsung MYSONO U6 Bedienungsanleitung Seite 187