Fig 5. C-arm system for percutaneous intervention is shown. Fig 5. C-arm system for percutaneous intervention is shown. MR suite set up for radiologic intervention has three-camera video sensor array (curved arrow) that detects the location and orientation of a hand-held probe (black arrow). The system automatically acquires continuous MR images based on the probe position, and automatically updates display of four images on shielded LCD monitor adjacent to the scanner (arrowhead). A computer mouse on the LCD console and foot pedals (not shown) allow the scanner to be operated by the radiologist throughout the procedure Jonathan S. Lewin AJNR Am J Neuroradiol 1999;20:735-748 ©1999 by American Society of Neuroradiology