Mindray DC-80A, Operator'S Manual

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Image Optimization 5-31
rate: is commonly used to evaluate how fast the tissue is deforming.
TDI QA Workflow:
1. Perform image scanning on cardiac muscle, freeze the image and select a range of images for
analysis, or select a desired cine loop from the stored images.
Tip:

Images from the current scan session (already in freeze mode) or from a saved image loop can
be used for TDI QA.

TDI QA is only available if the user has selected an image loop. If the user has selected a
saved still image (just one frame), the TDI QA function is not available.
2. Touch [TDI QA] on the TVI touch screen page to activate the TDI QA function, or press the user-
defined key for TDI QA directly.
3. Mark out the part of interest.
4. Select the quantitative analysis curve: touch [Speed] / [Strain Rate] / [Strain] to select.
5. Save the curved image, export the data and perform parameter analysis.
6. Touch [Exit] to exit the TDI QA function.
5.9.4.1 TDI QA Screen Description
TDI QA Screen (using the Speed – Time curve as an example)
1 - TVI Cineloop window
Sample area: indicates the sampling position of the analysis curve. The sample area is color-coded, 8
(maximum) sample areas can be indicated.
2 - B Cineloop window
Tip:

The images in the TVI cineloop window and B cineloop window are the frozen image of the
same moment. Roll the trackball to review the images in the two cineloop windows.

Sample areas are linked in the TVI cineloop window and B cineloop window.
3 - Displays the analysis curve

The Y-axis represents the speed (unit: cm/s). [In the Strain Rate – Time curve, the Y-axis
represents the strain (%). In the Strain – Time curve, the Y-axis represents the strain rate (1/s).]
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