Fig. 1From: Combined frameless stereotactical biopsy and intraoperative cerebral angiography by 3D-rotational fluoroscopy with intravenous contrast administration: a feasibility studya, b Patient positioning in a supine position. Head fixation in a radiolucent Mayfield clamp. c, d The 3-D fluoroscope (O-Arm, Medtronic GmbH, Meerbusch, Germany) position during the hair shaving and surgical disinfectionBack to article page