Panel A): radial force profiles derived from 3.6 μm imaging (solid black line) and from P5 mass maps (red solid line) for the barred galaxies NGC 1566 and NGC 0150. For NGC 1566, which is representative of the galaxies with the largest difference in the force profiles due to non-stellar contaminants, the Q_T derived with the P5 mass map slightly differs from the raw Q_T, but the deviation is lower than the uncertainty associated with the disk thickness, whereas for NGC 0150 the Q_b is roughly the same. We also show the “bar-only” Q_T profiles using 3.6 μm images for these two galaxies. Panel B): for a sample of 34 barred galaxies, we compare the gravitational torque parameter as measured from 3.6 μm and ICA corrected maps. The error bars are determined by the disk thickness uncertainty. No systematic deviation is observed.