Fig. 4From: Investigation of the clinical inter-observer bias in prostate fiducial marker image registration between CT and MR imagesClinical target volume (CTV) center of mass (CoM) vector displacement from the clinical baseline. The CTV CoM vector displacements for 167 observer registrations are displayed as colored dots ranging from dark blue (0 mm vector displacement) to dark red (3.5 mm vector displacement)Back to article page