8 Elastography
Operator’s Manual 8 - 5
M-STB Index/Sensi.
The STE imaging can easily be affected by respiration, pulse of the main artery, or transducer
movement, which may cause uncertainty and unreliability. The M-STB Index helps users judge
whether the current elasto image is captured in stable state. Based on the judgment, capturing
method, capturing part, and patient cooperation can be adjusted accordingly.
Grading definition of the M-STB Index: 1 star indicates that the motion interference is extremely
strong, and it is not recommended to use the elasto image; 2 stars indicates that the motion
interference is relatively strong, and it is not recommended to use the elasto image; 3 stars indicates
that the motion interference is general, and it is not recommended to use the elasto image; 4 stars
indicates that the motion interference is not strong, and the image can be used; 5 stars indicates that
the motion interference is few or slight, and it is recommended to use the elasto image.
Tap [M-STB Sensi.] on the touch screen to set the grading threshold of the M-STB Index.
The stronger the sensibility of the motion stability is, the higher the judgment accuracy of the
motion interference becomes.
Users can determine the interference degree of the currently-captured elasto image according to the
M-STB Index.
Smooth
This feature is used to reject the noise and smooth the image.
The bigger the level is, the higher the smooth effect achieves.
Persistence
This feature is used to superimpose and average adjacent elasto images, so as to optimize the
image.
The bigger the value is, the higher the frame optimization effect achieves.
The persistence function can remove image noise and optimize image effect to gain a more detailed
image.
Invert
Invert the map to satisfy the different doctors to define the benign lesion or malignant lesion.
iLayering
To increase the layer display in elasto images.
Filter
To filter the noise of the elasto image.
The higher the level is, the smaller the noise of the elasto image becomes, and the clearer the edge
of the field target appears.
The system restarts scanning B image and E image after the filtering is completed.
Map Position
This feature is used to adjust the up/down position of the map.
Select/Bad
It is used to remove the desired frame from stress curve. The removed frame will not be calculated
in STE indices.
8.2.3 Measuring
Press <Caliper> to enter general measurements. You can perform the measurements of
Elastography, Elas. Ratio, Directional Ratio, Elas. Hist and etc.
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