8 Elastography
Operator’s Manual 8 - 9
The square height of the elasto curve (Y-axis represents elasto metric; X-axis represents the time)
represents the average value of the elasto metric for current frame.
Rotate [Elas. Metric] knob to adjust the value of the elasto metric.
The metric includes Young’s modulus E (unit: kPa), and shear modulus G (unit: kPa).
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.
Rotate [E Avg] knob to adjust the value.
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.
Tap [M-STB Index] on the touch screen to enable the function and the button will be highlighted.
Then the M-STB Index is displayed at the upper side of the image.
• 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.
• Users can determine the interference degree of the currently-captured elasto image according
to the M-STB Index.
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.
Rotate [Scale] knob to adjust the value.
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.
Tap [HQElasto] to enable the function. The soft key becomes highlighted.
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.
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