Release of Patients Administered Radioactive Materials

Initial Acitivity (in millicuries):

Which of the following Medical Conditions applies to the patient?
Hyperthyroidism.
Postthyroidectomy for thyroid cancer.
None of the above.

Which of the following Occupancy Factors applies to the patient during the period from 8 hours after administration until total decay?
E = 0.75 - When a physical half-life, an effective half-life, or a specific time period under consideration
      (e.g., bladder holding time) is less than or equal to 1 day.

E = 0.25 - When an effective half-life is greater than 1 day if the patient has been given instructions, such as,

• Maintain a prudent distance from others for at least the first two days,
  
• Sleep alone in a room for at least the first night,
  
• Do not travel by airplane or mass transportation for at least the first day,
  
• Do not travel on a prolonged automobile trip with others for at least the first two days,
  
• Have sole use of a bathroom for at least the first two days,
  
• Drink plenty of fluids for at least the first two days.

• Follow the instructions for E = 0.25 above,
  
• Live alone for at least the first two days,
  
• Have few visits by family or friends for at least the first two days.