6 Acquiring Images
66 Basic User Manual
B
5.1
2
2
1
DYN
1
Focus
THI
R
R
Pannoramic
Compound
Trapezoid
Frequency uScan Chroma
ECG
PDI
Figure 6-5 B-Mode Imaging Parameters Menu
To optimize the image by using controls in the following instructions:
●
Tap the left or right part of an item to adjust the parameter, the value displays at the bottom of the item. You
can tap on the touch screen to turn the current menu to the previous or the next page if it displays over one
page.
●
Or, rotate the knob on the control panel that is directly below the selected item to adjust the value.
NOTE:
You can adjust all parameters in the real time B mode, but can only adjust
Chroma
and
Gray Map
in the
frozen B mode.
■ Gain
The B mode gain (2D gain) determines the amplifying factors for the received echoes and the brightness of the
ultrasound image. The echoes are amplied with the same gain value regardless of depth.
To adjust the gain:
●
Rotate the
B
knob on the control panel clockwise to increase the value.
●
Rotate the
B
knob on the control panel anticlockwise to decrease the value.
■ TGC
TGC (Time Gain Compensation) is used to adjust the gain that allows compensation for attenuation of the echoes
over time (depth). It is adjustable during the real time scan regardless of the imaging mode and display format.
TGC balances the image so that the density of echoes is the same throughout the image.
To adjust TGC:
●
Move the desired slider to the left to decrease the value.
●
Move the desired slider to the right to increase the value.
NOTE:
• Modications of TGC values cannot be saved if you shift to use another imaging mode.
• The TGC curve is displayed in the top right corner of the imaging area when you adjust TGC values, and
the curve disappears if TGC values are not adjusted for more than 3 seconds.
■ LGC
LGC is used to adjust the brightness on the left or right part of the ultrasound image.
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