Samsung SONOACE R7 Bedienungsanleitung Seite 119

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4-21
Chapter 4 Diagnosis Modes
PW Spectral Doppler Mode Screen
Sample Volume
When Sample Volume is on the blood ow of the 2D image, it represents Doppler Spectrum. The size
and depth of Sample volume is displayed in [mm] units. Its position is moved with the Trackball and
displayed in the xx.xx@yy.yy mm format. The format means that a Sample Volume of ‘xx.xx mm size is
located at a depth of ‘yy.yy’ mm.
For example, [email protected] mm means that a Sample Volume of 2.00mm size is located at a depth of
16.07mm.
Moving Sample Volume: Use the Trackball on the control panel.
Resizing Sample Volume: Adjust the Sample Volume size by pressing the Change button and
using the Trackball on the control panel. Press the Change button again to return to the Sample
Volume Position Control screen. The icon showing the two Trackball functions (SV Position/SV Size)
is shown for a second and then disappears.
Adjusting the angle of Sample Volume: Use the Menu dial-button on the control panel. If you
rotate the dial-button clockwise, the angle increases from between –70 ~ +70.
HPRF (High PRF) Function
This function measures blood ow for which the speed exceeds the specied limit at a specied depth.
It expands the scale into double the size of the original scale. This function is available only in PW
Spectral Doppler Mode (D Only).
Activating HPRF
To activate HPRF, increase the Scale values at the required depth. A The Phantom Gate will appear
on the D Line at a position higher than the sample volume. Once HPRF starts, PRF does not
increase even if you increase the scale value.
Finishing HPRF
While HPRF is in use, decrease the scale value by one step to nish HPRF. The maximum PRF values
in PW Spectral Doppler Mode are shown.
Moving Sample Volume
To move the Sample Volume position in the D Only state, the system calculates PRF values and the
Phantom Gate position, and updates them on the PW Spectral Doppler image. HPRF is terminated
when HPRF cannot be activated.
When Sample Volume is moved in the 2D Only state, the PRF values don’t change.
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Kommentare zu diesen Handbüchern

Prof Akhigbe 24 Apr 2024 | 14:29:06

I want to learn how to do angle correction on PW Doppler on my machine.

Prof Akhigbe 24 Apr 2024 | 14:30:30

How do I assess PW angle cursor?

Prof Akhigbe 24 Apr 2024 | 14:40:21

I don't want to join the group.