ACUSON Cypress™ Operator’s Manual
5-51
M-Mode Scanning
Activate the M-Mode Display
To activate the M-Mode time/motion display, follow these steps:
1.
Press the
M
mode key once. The
2D
sector is live and the Trackball is
assigned to the M-Mode cursor line.
2.
Position the cursor in the desired portion of the image, and press the
M
mode
key a second time. This freezes the
2D
image and activates the M-Mode
time-motion display.
3.
Pressing
M
again toggles between the active time-motion display and the
real-time sector image. You can also re-position the M-Mode sample while
the
2D
image is frozen. The sample line in the
2D
image moves but the
2D
image remains frozen.
NOTE The shallowest 10% of the scanning depth (nearest the transducer
face) is not displayed. For example, if a scanning depth of 16.2 cm is
selected, the shallowest 1.6 cm is not displayed.
Main Knob Controls Gain and Compress
When you press the
M
mode key two options appear—Compress and
2D
Gain.
If you press
M
again the spectral display becomes active and the two options
are Compress and Gain. Press
M
again to make
2D
active again. The options
are controlled by the Main knob. Press the Main knob to toggle between the two
active options.
Compress
Adjusts the presentation of the
2D
image by changing the
Dynamic Range settings. The current setting is shown in the upper left por-
tion of the screen.
2D
Gain
(the system default) Displayed when
2D
is active. Turn the knob
clockwise to increase the overall amplification of the
2D
image data. Turn
counterclockwise to decrease.
Gain
Displayed when the time-motion display is active. Turn the knob clock-
wise to increase the overall amplification of the M-Mode data. Turn counter-
clockwise to decrease.
In Freeze mode, turn the Main knob to scroll through the frames.
M
TO SWITCH
BETWEEN
COMPRESS AND
GAIN, PRESS
THE MAIN KNOB