8 Elastography
Operator’s Manual 8 - 7
E Avg
Used to optimize the measurement result via equalizing the elasto metric of the current frames and
the previous frames. Decrease the image noise.
Off represents the E Avg is disabled. The larger the scale is, the more the frames of the elasto metric
are equalized.
Decrease the image noise.
E Bar
This feature supports the elasto curve to be displayed based on different statistical amounts.
M-STB Index/Sensibility
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.
Scale
Used to optimize the display effect of the elasto average metric inside ROI via changing the Y-axis
size.
If elasto metric average value inside ROI of a certain frame image exceeds the maximum scale on
the elasto curve, elasto metric will display in the maximum scale value.
HQElasto
Enable the high-quality scan mode and optimize the penetrability.
Press <Update> to acquire the high-quality image. It produces single-frame B image and ROI elasto
metric data.
The measurement, comment and body mark is not available in HQElasto status.
Filter
This feature is used 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 parameter is adjusted.
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.
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