Mindray DC-80A, Operator'S Manual

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Image Optimization 5-87
5.13.2.1 Basic Procedures for STE Imaging
1. Select a proper probe. Perform 2D scan to locate the region.
2. Tap [Elasto]
→[STE] on the touch screen. Or press the user-defined key (set the user-defined key via
[Preset]→[System]→[Key Config]) to enter the STE mode.
3. Adjust the ROI based on the lesion size, and press <Set> to adjust the ROI size and the position. To
compare the hardness between the lesion and the normal tissue, the ROI should include the lesion and
the normal tissue.
4. Keep the probe still to imaging, and adjust the parameter to obtain premium image.
5. Freeze the image, and replay the image if necessary.
6. Perform the measurement or add comment/body mark to the image if necessary.
7. Save the single-frame and multi-frame image.
8. Acquire high-quality image if necessary (for details, refer to “5.13.2.2 STE Mode Image Optimization”).
9. Press <B> on the control panel to exit the shear wave elastography mode, and return to B mode.
5.13.2.2 STE Mode Image Optimization
Image Quality
Description
Used to select the transmitting frequency of the current probe, the real-time value of
which is displayed in the image parameter area in the upper right side of the screen.
Operation Rotate the knob under [E Quality] on the touch screen to select the different THI
frequency value.
The adjusting range of basic frequency values can be divided into penetration preferred
(Pen), general mode (Gen), resolution preferred (Res).Please select the frequency
according to the detection depth and current tissue features.
Impacts Used to optimize the resolution and the penetrability of the image.
Elas Metric
Description Used to adjust the elastography metric.
Operation
Rotate the knob under [Elas Metric] to adjust the value on the touch screen.
The metric includes Young’s modulus E (unit: kPa), shear modulus G (unit: kPa), and
shear wave velocity Cs (unit: m/s).
The current elastic modulus or the shear wave velocity (including the unit) appears on
the top of the color bar.
Note: the operation description of the STE in the manual may differ from the real display
of the system because of the configuration variability, please refer to the system the
user purchased.
Scale
Description
Used to change the maximum scale to make the map related to the color at the top of
the bar. Optimize the elasto modulus, or mirror the elasto wave velocity to the map.