Unit: Medical Imaging Task 3 Case Studies (AC 5.1, 5.2 5.1Compare and contrast the uses and relative advantages of X-rays, ultrasound, gamma camera and MRI in examining internal structures Evaluate the hazards of X-rays, ultrasound, gamma camera and magnetic resonance in medical imaging and explain the control methods used to minimize risk to patients and operating staff. You are provided with information describing safety procedures used in 3 medical imaging departments. For each department a) explain the nature of the hazards to patients and staff b) explain how the procedures reduce the hazardous effect Explain the circumstances where each method of imaging might be used in preference to ultrasound, which has relatively low levels of hazard. Scenario 3: X ray imaging department All diagnostic examinations involving medical exposures are performed with the radiation dose to the patient being as low as reasonably practicable to achieve the required quality of image. All operating personnel must withdraw from the treatment area when X-ray tube is in operation. Personal dosimeters (film badge) should be worn on the front of the body, in the area of the main torso, anywhere from waist to neck. Individuals who wear lead garments should position the whole body dosimeter at the collar level, outside of any lead protection. When not wearing the dosimeter, it should be stored in an area away from any radiation sources. Do not lend your dosimeter to another person, and do not wear another person's dosimeter. Personal dosimeters must be submitted for analysis every 3 months. If your dosimeter is damaged or lost, promptly contact the badge coordinator or the Radiation Safety Office. Personnel must inform the Radiation Safety Office if they become pregnant or are intending to become pregnant