3.2.3 Gain adjustment
Examine the ultrasound image when you make any fine adjustment of the gain.
a) TOTAL Gain (1)
b) Dynamic Range (2)
c) Near Gain (3)
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3-12
<Understanding the probe angle mark>
The scan direction mark (1) on the B mode probe is indicated by the extending
section (2) of the probe angle mark.
(1)
(2)
(Fig. 5)
)
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Settings made here are only effective for the eye currently selected.
Sets the echo sensitivity of the overall image. (Adjustment range: 20 - 80 dB)
Adjusts the dynamic range of the image. (Adjustment range: 30 - 70 dB)
A higher dynamic range makes the black and white contrast weaker. A lower
dynamic range makes the black and white contrast stronger and creates a high
contrast image.
Sets the echo reflection sensitivity in the neighborhood of the anterior eye and
vitreous.
(1)
(2)
(3)
(Fig. 4)
)