The B-Mode Panel must be used to Calibrate the B-Mode image and to set the Diameter ROI.
Calibration
The Set B-Mode Calibration button is used to Calibrate the B-Mode image.
The drop down menu (1) shows the length of the line used for the calibration.
The numeric display (2) shows the calibration value.
ROI
The Set B-Mode ROI button is used to set the Diameter ROI.
The numeric display (3) shows the top-left position, in pixels, of the Diameter ROI (top-left corner).
The numeric display (4) shows the size (width x height), in pixels, of the Diameter ROI.
Once you have calibrated the B-Mode image and set the Diameter ROI, click on the Next button to proceed.