FujiFilm VisualSonics Vevo MD User Manual page 309

An active caliper is placed on the image.
3 Tap and drag the active caliper to a beginning point on the lumen/intima interface.
4 Tap Set to place the first caliper.
5 Tap and drag the second active caliper to another point on the lumen/intima
interface.
6 Tap Set to place the second caliper.
7 Tap Set if you want to drop another caliper on the lumen/intima interface or tap
Done if the trace is complete.
Note: A minimum of two calipers are required for this trace.
To add an I/M measurement to a 2D image 309