Navigate to the right-hand menu in the case view and select the ‘Tools’ tab. Then, select ‘Measure’.

“VPOP” allows you to measure diameter, circumference, radius, and length. You can toggle the measurement value off if helpful and lock the line axis to avoid any inadvertent movement.

To superimpose a circle, select ‘Radius’ and move to meet the circumference of your anatomical landmark. Now move the circle centre to achieve the best fit.

To measure an angle, define one axis, then add another line. At any intersection, VPOP will automatically display the angle quadrants.

If we click on an axis, and then the angle, we can see the quadrants and select the one of interest.

You can also track a landmark or axis shift by clicking on one end to follow the area of interest with your intersection.