Mindray Eagus TEX21 - Anatomical M Mode Parameters; PW;CW Mode; PW;CW Mode Image Scanning; PW;CW Mode Image Parameter

6 Image Acquisition
Operator’s Manual 6 - 13
– Angle Adjustment: When the M-mark line is activated, tap the dotted circle and drag
along the sampling line to adjust the fulcrum of the line, and adjust the angle by rotating
the sampling line.
4. Tap [Image] to open the image menu. Adjust the parameters to optimize the image.
6.6.2 Anatomical M Mode Parameters
In anatomical M mode, adjustable parameters are similar with these in M mode.
6.7 PW/CW Mode
PW (Pulsed Wave Doppler) mode or CW (Continuous Wave Doppler) mode is used to provide
blood flow velocity and direction utilizing a real-time spectrum display. The horizontal axis
represents time, while the vertical axis represents Doppler frequency shift.
PW mode provides a function for examining flow at one specific site for its velocity, direction and
features. CW mode proves to be much more sensitive to high-velocity flow display. Thus, a
combination of both modes will contribute to a much more accurate analysis.
6.7.1 PW/CW Mode Image Scanning
Perform the following procedure:
1. Select a high-quality image during B mode or B + Color (Power) mode scanning, and adjust to
position the area of interest in the center of the image.
2. Tap [PW]/[CW] to enter PW sampling line adjustment status.
The sampling status will be displayed in the image parameter area in the top-left corner of the
screen.
– Set the position of the sample line by dragging the sampling line; drag the SV gate to
place the SV on the target.
– Adjust the angle and SV size according to the actual situation: drag the PW angle line to
change the angle, pinch on the image area to adjust SV size.
3. Tap [PW]/[CW]/[Update] or double-tap the sampling line to enter PW mode and perform the
examination.
You can also adjust the SV size, angle and depth in real-time scanning.
4. Tap [Image] to open the image menu. Adjust the parameters to optimize the image.
6.7.2 PW/CW Mode Image Parameter
Gain
This function is intended to adjust the gain of spectrum map. The real-time gain value is displayed
in the image parameter area.
SV
To adjust the SV position and size of sampling in PW mode, the real-time value of SV and SVD are
displayed in the image parameter area in the top-left corner of the screen.
CW Focus Position
To adjust the CW mode SVD. The real-time focus position value is displayed in the image
parameter area in the top-left corner of the screen.