User's Guide

Picture 3-9 Measurement function

After selecting the “LENGTH” length measurement function, click on the two points to be

measured in the frozen screen, the measurement trajectory will appear, click the moving point on

the trajectory line (as shown in the middle of Figure 3-7), move the trajectory, adjust the length. The

size of the real-time measurement data is displayed at the top right of the screen. Among them, GA

(CRL), GA (BPD), GA (GS), and GA (FL) are measured in the same manner.

Select the "AREA/CIRCUMFERENCE" area/circumference measurement function, select the 3

o'clock position to be measured in the frozen screen and click on it. 3 moving points will appear on

the screen, and 3 moving points will automatically form an elliptical trajectory. Click on the moving

point to adjust the measurement position, and the measured data will be displayed in real time on

the upper right of the screen. Among them, GA (HC) and GA (AC) are measured in the same way.

Select the “ANGLE” angle measurement function to measure the angle. You can select the 3

o'clock position to be measured in the frozen screen and click it will appear 3 moving points on the

screen. 3 moving points will automatically form an angle. Click the moving point to adjust the

measuring angle. The measured data is displayed in real time on the upper right.

After selecting the “TRACE” track area measurement function, you can measure the irregular

position area of   the edge, and draw the edge on the screen with your finger to get the area size.

The final measured data is displayed at the top right of the screen.

Note: Measurement functions GA (CRL), GA (BPD), GA (GS), GA (FL), GA (HC), and GA (AC) are

only available for obstetrics.

The above measurement functions can be fine-tuned using the virtual trackball of the screen.

During the measurement, you can click on the generated measurement point, and the virtual

trackball that appears (as shown in the lower right corner of Figure 3-10) can be fine-tuned

according to the direction of the measurement point.