Spectral Doppler Mode
7.1.2.4 PW Automatic Optimization
This function will optimize the following settings:
PRF: automatic detection of highest flow velocities and adjustment of the velocity scale
Baseline: will be shifted so that the flow spectrum is centered
Pressing the [auto] key enables automatic optimization of the PRF and Baseline.
When the key is pressed again, the optimization will be updated.
Press the [auto] key twice to switch off the Automatic Optimization in PW mode.
Remarks:
* When the Automatic Optimization function is active, the [auto] key is brightly illuminated.
* The PRF and Baseline can always be changed manually!
7.1.2.5 Sweep Speed
The “Speed” control allows selection of variable sweep speeds. The faster sweep speed may be useful
to analyze flow curves. For example, to calculate a mean pressure gradient then it will be much easier
to do this on a fast speed trace than on a low speed trace.
The [Speed] key is found in the status area; review: PW Main Menu
(chapter 7.1.1)
By touching
⇧ or ⇩ , four different sweep speeds can be selected.
1 = 3.5 cm/s
2 = 5.0 cm/s
3 = 7.5 cm/s
4 = 10.0 cm/s (in relation to the system’s monitor)
Remarks:
Changing the speed is only possible in write mode.
7.1.2.6 Audio Signal
This flip switch changes the volume of the audio signal derived from the PW spectrum.
↑ both loudspeakers louder
↓ both loudspeakers lower
The volume is adjustable between 0 and 96 dB .
Voluson
®
730Pro - Basic User Manual
7-6 105831 Rev. 0
To Next Page
Loading...
