Image Modes
10-7
Persistence
Persistence is used to remove image noise and improve the overall image quality.
z Click [Persistence] item in the menu.
z Select between 0 and 7.
TSI (Tissue Specific Imaging)
This feature is used to adjust the speed of sound against various tissue types, i.e.,
General, Muscle, Fluid and Fat.
z Press [Menu] key to show the B Mode menu.
z Click [TSI] item in the menu to select among four selections.
Noise Rejection
z Click [Noise Reject] item in the B Mode menu.
z Select the value among 0, 1, 2 and 3. The smaller the value, the smaller the noise
rejection; the greater the value, the greater the noise rejection.
z This feature rejects B Mode image noise, thus increasing signal-noise ratio.
Post Process
Post processing is used to apply modifications to a gray map in order to optimize overall
image quality.
z Select [Curve], [Rejection] or [γ] from the B Mode menu.
z The post processing feature is valid for images in real time, freeze or cine review
status.
Curve
1
From the B Mode menu, select [Curve] to pop up the gray transform curve.
2
Move the cursor onto a node “·” along the curve. The cursor becomes a .
3
Press <Set> key, and roll the trackball to move the node along the vertical axis adjusting
the gray map. You will notice the B Mode image changes at the same time showing the
modification in real-time. You can select multiple nodes to create a unique gray map profile.
4
Press <Set> key a second time to fix the node in the new position.
5
Repeat the above process to adjust multiple nodes.
6
Pressing the [Back] key will cancel the active adjustment, returning the node back to the
previous position.
7 Press <Set> key on the [Linear] selection, and the gray map will transform to become a
45° straight line.
8 Click [OK] to confirm the adjustment and exit the gray map toolbox.
9 Click [Cancel] to cancel all modification and resume the previous curve and exit the
gray map toolbox.
The adjustment is shown in the following figures:
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