Samsung SONOACE R3 Bedienungsanleitung PDF herunterladen (Seite 135)

Chapter 5 Measurements and Calculations

5-13

Doppler 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 cal-

culate the velocity change, time change and acceleration.

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

You can measure acceleration for up to two segments and dierentiate the points of segments into Point

1 and 2.

1. Press the Softmenu button [1] Distance to select Doppler Velocity. “Doppler Velocity” is displayed on

the left side of the screen.

2. Specify two points and measure the straight distance between them. The method for measuring a

line is the same as in “2D Distance (Line).”

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

▶

V1: Velocity at Point 1

▶

V2: Velocity at Point 2

▶

RI: Resistivity Index

▶

V1/V2: The Ratio of Velocity

▶

dV: Change in Velocity

▶

dT: Change in Time

▶

Acc: Acceleration

The equations used for D Velocity measurement are as follows:

Doppler Velocity (A/B)

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 velocity at each point to calculate the ratio of the velocity be-

tween them.

You can calculate up to 4 sets of velocity ratios. The points representing each set are dierentiated into

Point A and B.

1 2 ... 130 131 132 133 134 135 136 137 138 139 140 ... 290 291

Keine Kommentare

Samsung SONOACE R3 Bedienungsanleitung Seite 135