We initially used marks to setup to at first and then realized that the FB dicom setup was more accurate than our marks. It is much more precise than what your marks can tell you. So we eliminated the setting up to mark/tattoos and go straight into FB dicom setup then switch to breath hold and the patient usually falls right into the threshold. We check with films on Verification day then weekly. Daily position is also verified by acquired table position and medial ssd. This makes the process very smooth for therapists and patients.