Samsung MySono U5 Bedienungsanleitung Seite 124

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Operation Manual
4-24
X Exiting HPRF
While HPRF is in use, decrease the scale value by one step to exit HPRF. The PRF value at this
point will be the maximum value in PW Spectral Doppler Mode.
X Moving Sample Volume
If you move the Sample Volume in the D Only state, the system will calculate the PRF value
and the Phantom Gate position and update the information on the spectral Doppler image
accordingly. If you cannot activate HRPF, exit HPRF rst.
If you move the Sample Volume in 2D Only state, the PRF value will remain unchanged.
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 Soft Menu
Steer
NOTE: The Steer function appears on the menu only when the linear probe is in use.
This minimizes the loss of Doppler information by adjusting the ultrasound beam angle. Select Left,
None, or Right for Sample Volume with the dial-button.
Invert
Press the dial-button to invert the + and - speed indicators for the spectrum.
Sweep Speed
Adjust the sweep speed for the Doppler spectrum. Select 60Hz, 120Hz, 180Hz, 240Hz, 300Hz or
360Hz with the dial-button.
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