
Chapter 4 Diagnosis Modes
4-23
[Figure 4.8 HPRF]
NOTE: HPRF cannot be activated in Simultaneous Mode. Also, HPRF cannot be activated if the PRF
value X 2 is 23 KHz or greater before HPRF is activated.
CAUTION:
X
The Phantom Gate position may be located outside the 2D image area in Zoom Mode.
X
Make sure that Sample Volume and Phantom Gate are not placed together in the measuring
area. If more than two SVs are located in the vessels, all Doppler components will appear in the
spectrum, causing noise.
PW Spectral Doppler Mode Menu
Following items are displayed on menu when you press the Menu dial-button in PW Spectral Doppler
mode. Select the item and adjust the value with the Menu dial-button.
■
Average
Increases spectrum quality. Select Low, Middle or High with the Menu dial-button.
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