štítná žláza

Longitudinal and transverse scans are performed allowing the measurements
of the depth (d), the width (w) and the length (l) of each lobe. The volume of
the lobe is calculated by the formula :

V (ml) = 0.479  x  d  x  w  x  l (cm).

The thyroid volume is the sum of the volumes of both lobes. The volume of the
isthmus is not included.