GE M
EDICAL
S
YSTEMS
- K
RETZTECHNIK
DRAFT
V
OLUSON
® 730P
RO
/ 730P
RO
V (BT´04)
D
IRECTION
KTI105947, R
EVISION
2
S
ERVICE
M
ANUAL
Chapter 4 - Functional Checks
4-13
4-4-3
Spectral Doppler Mode Checks
NOTE:
Different menus are displayed depending on which Spectral Doppler Mode (PW or CW) is selected.
NOTE:
The Continuous Wave Doppler Mode is an Option. The
CW
key is only illuminated if the option
is installed and the selected probe is capable for the Continuous Wave Doppler Mode.
Figure 4-10 PW Main and PW Sub
Table 4-5
Spectral Doppler Mode (PW, CW) Functions
Step
Task
Expected Results
1
Gate Position and Gate Size
Adjust the Gate- position resp. size with the
TRACKBALL
in the 2D single image.
The
upper trackball key
changes from Gate position to Gate size.
2
Activation of Doppler Mode
Press the
right trackball key
to activate the motion display.
Press the
left trackball key
to activate both Modes (B/D).
3
Doppler Gain
Rotate the
PW MODE
key to adjust the amplification of the entire spectrum.
4
Steering
The steering function is only possible with linear probes.
5
RT TRACE (Real Time Auto-Trace)
The envelope curve of the Doppler spectrum (maximum velocities) and the
corresponding evaluations are automatically displayed on the monitor.
6
Invert
This function inverts the Doppler spectrum display in relation to the direction of
the flow. (The Invert function is possible in read and write mode.)
7
SPEED
By touching up or down, four different sweep speeds can be selected.
8
BASELINE
Adjusting the baseline is possible in read- and write Mode (up/down in 8 steps).
9
WMF
(Wall Motion Filter)
Used to eliminate Doppler “noise” that is caused by vessel wall motion.
