I-123 Wholebody (Post Thyroid Cancer) Scan at Swedish

Information and Preparation Instructions

Please arrive in the Radiology department for the admissions process. A nuclear medicine technologist will greet you for the appointment. You will be given a small amount of iodinated radiotracer in capsule form. This will allow the technologist to measure and image the thyroid and whole body 24 hours later. You will be instructed by the technologist when to return the following day. Upon returning, you will be asked to remove everything from the waist up and put on a provided scrub top.  You will be lying on your back for approximately 40 minutes. The images consist of a whole-body scan and a magnified image over the thyroid area.  Please be aware, additional images could be requested by the radiologist. This would extend the imaging time.

Before Your I-123 Whole Body Scan

  • No thyroid medicine for 3 weeks prior to exam
  • No radiographic images that contain iodinated contrast three weeks prior to exam
  • You may be instructed by your physician to go on a low iodine diet
  • Thyrogen injections should be administered two days prior to the administration of the iodinated capsule; this injection will be done either in your doctor’s office or in the Nuclear Medicine Department