Acclarix LX9 Series Diagnostic Ultrasound System User Manual
5.11 Elastography
Elastography imaging maps the elastic properties of soft tissue with different colors in a region of
interest by estimating the strain before and after tissue distortion caused by external or internal forces.
Only linear transducers support Elastography.
Figure 5-8 Example of Strain Elastography Display
5.11.1. Using Elastography Mode
To Use Elastography Mode:
1. Perform the scan in B mode and locate the lesion.
2. Press Elasto on the touch screen to invoke Elastography mode.
3. Adjust the size and position of ROI box if necessary.
Use <Set> key to toggle between adjusting the position and the size. Use trackball to adjust.
4. Create a distortion in the tissue (eg. push the body surface with a transducer) according to clinic
experiences while you are scanning the lesion. The strain pressure generated is indicated by the
pressure curve in real-time at the bottom of display screen.
5. Press Freeze.
To Measure Strain Ratio:
Refer to Section 8.1.1 B-mode Generic Measurements for detailed steps of measuring Strain Ratio.
1. Proper pressure should be applied to the lesion when scanning according to the clinic situation
and experience, otherwise misdiagnosis may result.
2. The ROI box should be adjusted to proper size and position, in which lesion and adequate normal
tissue should be included for better diagnosis.
3. The Elastography image is for reference only. The image quality and measured results in
Elastography mode always depend on the accuracy of the procedure performed. Any clinic
diagnosis should be verified with other effective diagnosis methods.
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