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Chapter 6 Measurements and calculations
Main content of this chapter:
During normal calculation and measurement of the image in B and M image mode, and during obstetrics calculation and
measurements in urology, etc., the system can, depending on the current examination mode, enter the appropriate
measurement mode and, depending on the measurement mode, access the appropriate report.
The system has a factory-set default measurement according to the examination mode. To change the presets, please
refer to the chapter on presets.
CAUTION:
Please select the most suitable ultrasound images, measurement methods and measurements according to your
diagnostic needs. The final measurement results must be determined and confirmed by a physician. Measure-
ment accuracy depends on many non-technical factors, such as operator experience and patient status. Please
do not use ultrasonic measurement results as the only basis for a diagnosis. Always use other clinical data for an
integrated diagnosis.
6.1
Keyboard for measurement
6.1.1
Trackball
The trackball is used to move the cursor; its main functions are as follows:
1
Before starting a measurement, use the trackball to select the menu options;
2
After starting a measurement, move the trackball to move the cursor; during the measurement, the cursor should
not be moved outside the image area;
3
During ellipse method measurement, use the trackball to change the length of the short axis.
4
Update the movement of the measurement result; move the trackball to change the position of the measurement
result.
6.1.2
[ENTER]
During measurement, the functions of the [ENTER] key are as follows:
1
When the cursor is on the menu, press this button to select options and start the measurement.
2
During measurement, press this button to anchor the start point and end point.
6.1.3
[UPDATE]
1
Before measurement, press [UPDATE] to change the measurement method, e.g. ellipse, trace. The changeable
measurement item has “< >”.
2
During measurement, the UPDATE KEY is used to switch the start point and end point, the long and short axis, so
long as the measurement is not yet finished.
3
During distance measurement, press [ENTER] to fix the start point. If the end point is not set, press the UPDATE
button to change the start and end points.
4
During ellipse measurement, if the long axis is fixed but the short axis is not, press the UPDATE button to switch the
long and short axes.