Figure 1. Graphs showing examples of skin dose (mGy) to the patient for spiral and conventional CT guided interventions. (a) Abdominal drainage (2 drains) using the Philips AV-El scanner; (b) wrist osteoid osteoma coagulation using the Philips AV-El scanner; (c) abdominal drainage using the Philips LX scanner; and (d) ankle osteoid osteoma coagulation using the Philips LX scanner.