Spectral Doppler Mode
Important note:
The determination of the envelope curve requires a clear and low-noise recording of the Doppler
spectrum. Otherwise the reliability of the displayed measurement results may not be ensured!
Remarks:
* Activating the Real Time Trace is only possible in write mode. No function in read mode.
7.1.2.13 Freeze
The [Freeze] key starts and stops the 2D image and PW Doppler spectrum.
review: To Freeze an Image
(chapter 4.5.2)
7.1.2.14 PW Cineloop
Several 2D image frames and the Doppler spectrum information can be recalled.
When freezing the spectrum a certain time frame (D-spectrum of the last examination sequence) is
stored in the loop memory. The sequence can be reviewed second by second.
Display: Cine for 2D images or Loop for Doppler spectrum on the monitor
min length: 60 seconds
Operation
:
1. Freeze the spectrum.
After freezing the trackball is active for 2D cine.
2. The upper trackball key changes from the D-loop to the 2D cine, and back.
The active cine is displayed in the trackball graphic on the monitor:
Cine/Loop xxx or Cine xxx/Loop
3. Use the trackball to recall the stored sequence by moving it horizontally.
Voluson
®
730Pro - Basic User Manual
7-10 105831 Rev. 0
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