SAEVO EVUS 8, Руководство пользователя

Страница: 70 / 150

6 Acquiring Images
60 Basic User Manual
■ Steer
Steer can be adjusted to change the direction of the acoustic beam when performing a real time scan by using the
linear probes.
To adjust the steer:
Flip the
STEER switch to change the direction of the acoustic beam.
NOTE:
Only linear probes are capable of adjusting steer.
6�3 Acquiring Color Flow Images
Color Flow imaging adds the color-coded qualitative information in the B-Mode image. Color Flow imaging is
helpful to see the flow, the relevant qualitative information and the flow velocity.
6�3�1 C Mode
Color is a color flow imaging technology which adds the color-coded qualitative information concerning the
relative velocity and direction of fluid motion in the B-Mode image.
Perform the following steps to acquire C-mode images.
1. Optimize a B-mode image.
2. Select the
C
key on the control panel to enter the C mode.
0
5
10
15
9
-9
cm/s
86
2D Imaging
Color Flow ROI
1.0
PRF
FPS
GN
PWR
FRQ
PWR
FRQ
GN
WF
D/G
I/P
D
C/P
255
2.2
1/50
70
C Map/DPDI
WF
Line Density
Sec.Width Sec.Pos Power%
B Reject
Frequency
S
Figure 6-5 C-Mode Imaging Screen
3. Adjust color flow ROI.
− Move the trackball to position color flow ROI.
− Select the
Set
key to adjust the size of color flow ROI.
− Select the Set key to reposition color flow ROI.
4. Optimize the C-mode image. For details, refer to Section 6.3.4 Optimizing C/PDI/TDI Mode Images.
5. Select the
C key again to exit the screen.
6�3�2 PDI Mode
PDI (Power Doppler Imaging) is a color flow imaging technology which adds the flow signal in the C-mode image.
PDI uses the number and amplitude of red blood cells going through in the flow to create the color-coded imaging.