EDAN Acclarix AX4 User Manual page 89

Acclarix AX4 Diagnostic Ultrasound System User Manual
To use PISA measurement in Doppler mode:
1. Freeze a strip image. Invoke the Measure function.
2. Select PISA measurement on the touch screen and then select a measurement label from MR
Trace, AR Trace, TR Trace and PR Trace.
3. Use the Doppler trace tool to get the measurement results.
When all the measurements described above have been completed, the system automatically
calculates the Flow Rate, Flow and EROA (Effective Regurgitant Orifice Area). See Chapter 6
Cardiac in advanced manual for the detailed PISA measurement and calculation results and
related equations.
7.3.2.4. Auto OB
Auto OB is a method designed to measure BPD, HC, HUM and FL automatically.
To use Auto OB measurement:
1. Invoke B mode.
2. Freeze the image when a standard fetal image is got.
3. Press Measure key on the console.
4. Select the desired measurement item BPD, HC, HUM or FL on the touch screen.
5. If Auto is not the default tool, press Tool Options to switch to Auto.
6. The auto measurement process starts. The result is displayed on the display screen.
7. If you are not satisfied with the measurement result, press Switch key to switch the active
caliper and use trackpad to do manual correction.
8. Double press Set key to complete measurement.
Always confirm the correctness of Auto-OB measurement results before entering it into
the report.
Note:
1. Auto-OB measurement is only available on a frozen image.
2. If the fetal image is not standard enough for Auto-OB measurement, no valid result
will be measured and the system will prompt you with "No valid BPD (HC, HUM, or
FL) result. Please proceed with manual measurement".
WARNING
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Features