We prepared a suitable software in order to use the same spectra acquired
for radial velocity determinations (i.e., with the spectrum of the Iodine
cell imprinted on) to measure variations of the stellar line profiles.
This is a novel approach, that can be of general utility in all high
precision radial velocity surveys based on iodine cell data. This software
has then been extensively used on data acquired within our survey (at
TNG), allowing a proper insight into a number of interesting cases, where
spurious estimates of the radial velocities due to activity or
contamination by light from the companions were revealed. The same
technique can also be considered to correct the measured radial
velocities, in order to search for planets around active stars.