GE LOGIQ 500 Advanced Reference Manual page 40

3DvieW Mode
B-Mode (Gradient)
Shade
3D Presets
3–10
Almost opposite from CFM processing. It is assumed that the
anatomy of interest will have a lower intensity level than the B
Gradient Threshold.
The near frame takes a lower fixed value, while the far frame
takes a higher fixed value. The value is changed by gradation.
After this process, a minimum intensity projection is made. The
result is an image with the near side of the object having lower
intensity and the far side having higher intensity.
This technique is basically a maximum intensity projection.
However, this technique uses two thresholds:
S
Shade Object Threshold
S
Shade Boundary Threshold
Comparison will be made frame by frame after the above
thresholds have been met. If the two thresholds are satisfied,
no comparison will be made with the rest of the frame.
Using the Max/Normal method, lower intensity echoes in the
near frame will be masked by higher intensity echoes in the far
frame. The Shade Method makes it possible to show lower
intensity echoes in the near frame despite the fact that there
may be a higher echo projection in the far frame.
This is available in CFM-Mode only.
Presets in Set Up/Custom Display pages 9 and 18 allow for
choices in display and rendering technique.
All Parameters are not available in the soft menu.
Ensure that these presets are adjusted for the desired result.
The value is higher than
the set threshold.
The value, to be compared
to Object Threshold result,
is lower than the Boundary
Threshold.
LOGIQ 500 Advanced Reference Manual
2276614–100 Rev. 0