Samsung MySono U5 Bedienungsanleitung PDF herunterladen (Seite 173)

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Chapter 5 Measurements and Calculations

5-13

1. Select M Distance in soft menu [1]. “M Distance” is displayed in the user information area.

2. Specify two points and then measure the shortest distance between them. The measurement

method is the same as in ‘Distance.’

3. Once measurement is taken, the result is displayed on the screen.

D Velocity

This is a basic measurement 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.

1. Press the Caliper button and select D Velocity in soft menu [1]. “D Velocity” is displayed in the

user information area.

2. Specify two points and then measure the shortest distance between them. The measurement

method is the same as in ‘Distance.’

3. Once measurement is done,

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 following formulae are used for D Velocity measurements:

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

including Vmax, PGmax, PGmean, VTI, PHT, Acc, AccT, Dec and DecT will be shown on the screen.

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