Parameters from imaging scan:
(1) thickness of each slice in mm
(2) gap between slices in mm
(3) cross sectional area of each slice in square centimeters
For a total scan there will be N slices and (N-1) gaps.
volume for each slice in cubic centimeters =
= (thickness of each slice in mm) / 10 * (area of slice in square centimeters)
volume for each gap between slices in cubic centimeters =
= (thickness of gap in mm) / 10 * AVERAGE(area of the 2 adjacent slices) =
= (thickness of gap in mm) / 10 * ((area first slice in square cm) + (area second slice in square cm)) / 2
volume of tongue in cubic centimeters =
= SUM(volume each slice) + SUM(volume for each gap between slices)
length of the tongue in the scans in centimeters =
= (((number of slices) * (thickness of slices in mm)) / 10) + (((number of gaps) * (thickness of gaps in mm)) / 10) =
= (((number of slices) * (thickness of slices in mm)) / 10) + ((((number of slices) - 1) * (thickness of gaps in mm)) / 10)
