On March 30-31, FDA will hold a public meeting to discuss steps that could be taken by manufacturers of devices used in computed tomography (CT) and fluoroscopy that would help reduce unnecessary patient exposure to ionizing radiation during CT and fluoroscopic procedures. The agency is also investigating reports of patients receiving unnecessarily high doses of radiation during procedures. FDA has articulated specific questions it hopes to address at the meeting-in presentations and in roundtable discussions-regarding such topics as equipment features, labeling, premarket submission requirements, user training and quality assurance measures. Registration requests must be received by March 15, and written comments must be submitted by April 15.