Fig. 1From: Intra-fraction motion of the prostate is not increased by patient couch shiftsThe auto-scan probe of the Clarity system has contact with the perineum of a patient (left image, photo credit Minglun Li). The illustration by the manufacturer (right image, image credit Elekta AB, Stockholm, Sweden) shows the integration of the ultrasound probe (center) into the treatment environment with gantry (top), cone beam CT (left and right) and robotic couch (bottom)Back to article page