During an X-ray procedure, patients will typically wear a lead apron over any area not being imaged to lessen the exposure to the radiation. The technician performing the X-ray will stand behind a barrier during the imaging. Radiation levels are typically very small for normal images, and although CT and Fluoroscopy involve higher levels, they are still well within the acceptable amount.
Most X-ray sessions are very short, and can be completed within 15 to 30 minutes, but the X-ray itself typically takes under a minute or two. CT scans may take longer, as they are taking a 360-degree view of the body.