Mindray Eagus TEX21 - Smart TTQA; Basic Procedures for Smart TTQA

6 - 38 Operator’s Manual
6 Image Acquisition
6.21 Smart TTQA
CAUTION
Smart Tissue Tracking Quantitative Analysis images are provided for reference
only, not for confirming diagnoses.
Apart from TDI imaging function, the system also provides smart tissue tracking QA function for
myocardial movement evaluation.
By smart tissue tracking QA function, the ultrasound system will scan each pixel position by frame
within the cardiac cycle, and then use region matching method and auto-correlation searching
method to trace each spot and calculate the movement, so as to determine myocardial motion in a
more quantitative way.
NOTE:
Only use the probes that support stress echo function under the cardiac mode (except for neonatal
cardiac, fetal cardiac) to start Smart TTQA function.
6.21.1 Basic Procedures for Smart TTQA
Perform the following procedure:
1. Freeze in real-time or open a saved B mode cardiac cine file. The cin. format file should
contain more than 1 cardiac cycle (with 2 R waves).
– With ECG: should be more than 1.2 cardiac cycles.
– Without ECG: should be more than 50 frames.
2. Tap [Smart] > [Smart TTQA] to activate the function. The system automatically identifies the
section and traces it. Then, the system displays the boundary of the endocardium and
epicardium.
NOTE:
If any section of the long axis (ALAX, A4C, and A2C) is not automatically recognized, select
a section manually.
3. Set the reference points on the screen. You can manually adjust the reference points to coincide
with the border of myocardial tissue. You can also adjust the [Thickness] and [Track Point] of
the myocardium.
NOTE:
• If automatic tracing is failed, select [3 Point] or [Manual] to set the reference points. For
the specific operation of the reference point, see “6.21.4 Myocardial Boundary
Tracing”.
• If the traced result is not satisfactory, tap [Reload] to re-trace the reference points, or
make fine adjustments to the points.
• If the selected cycle information is not adequate, reselect the cardiac cycle and repeat
the above steps for tracking.
4. Tap [Start Tracking] to start the tracking function. Adjust the parameters if necessary.
Tap [Edit] to display the cross cursor. Move the cursor to the point to be adjusted, tap and drag
the cursor to the correct boundary position and tap the cursor to set the point to the correct
position. And then the system displays the point in the new position. Tap [Start Tracking] to
start tracking again.