Full Digital Color Doppler Ultrasonic Diagnostic Instruments (Vet) User’s Manual V1.01
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Method 2: Select the B mode parameter on the menu at the top left of the screen by using the
Select
knob,
press
Select
knob change state between “parameter item select state” and “parameter item adjust state”,
rotate the
Select
knob change parameter item for “parameter item select state” or paramter value for
“parameter item adjust state”. Press the
Menu
key to display/hide this menu.
Parameters Adjustment in the B Mode
8.1.2.1 Adjusting the Gain
The B mode gain determines the amplifying factors of the received echoes and the brightness of the
ultrasound image. The echoes are amplified with the same gain value regardless of depth.
Steps:
Rotate the
Gain
knob clockwise to increase the value.
Rotate the
Gain
knob anticlockwise to decrease the value.
8.1.2.2 Adjusting the 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.
Steps:
● Move the TGC slide pot left to dimmer the B mode image of the corresponding depth.
● Move the TGC slide pot right to brighten the B mode image of the corresponding depth.
8.1.2.3 Adjusting the Focus Position/Number
It is used to adjust the focal position and the focus number. The focus identified by a triangle displays in the
right scale of the image.
Steps:
Move cursor to [Focus Position] menu item and press
Set
key to adjust the focus position.
Rotate
Select
knob to highlight the [Focus Position] menu item, press
Select
knob item to confirmation
select [Focus Position] item, and then rotate
Select
knob to adjust the focus position.
The same method to adjust the Focus Number.
8.1.2.4 Adjusting the Frequency
The probe is capable of generating a broadband signal with a certain start frequency and a certain bandwidth.
