Having a CT Scan: Page 7 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 Your job is to lie down on the table, stay as still as a statue, and follow directions so the pictures will be clear. The table moves you back and forth while the camera takes your pictures. When the camera is taking your pictures it makes a whirring sound, like a clothes dryer. During the CT Scan, the Radiology Technician can see you and talk to you. A CT Scan takes about 10 to 20 minutes...about the time it takes to eat your lunch.