Metastatic Survey Scan

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A Whole-Body I-131 Metastatic Survey scan is used to detect areas of residual functioning thyroid tissue and thyroid cancer. It is a nuclear medicine exam which combines a small amount of radioisotope with a pharmaceutical that is targeted to go to a specific organ. This radiopharmaceutical can be injected, inhaled or swallowed and is absorbed by specific cells within your body. Nuclear medicine exams differ from other radiological exams in that they provide both functional and structural information. The exams are very sensitive and can detect disease at its earliest stage. The exams are safe, relatively painless and the radiation exposure is similar to that of other diagnostic X-Ray exams

 

 

Need to Know

Nice to Know
  • Please inform the technologist if you are pregnant or think you may be pregnant
  • Certain thyroid medications need to be stopped prior to exam, please consult with your physician or our scheduling department before scheduling
  • This procedure is a multiple day exam.
  • Your doctor’s office may draw a blood sample to check your thyroid levels prior to scheduling the exam.
  • You may be asked to discontinue your thyroid hormone medications or be scheduled for 2 days of pretreatment with Thyrogen prior to administration of I131 capsule.

A nuclear medicine I 131 Metastatic survey Scan is used to detect areas of residual functioning thyroid tissue and thyroid cancer.

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Why is This Exam Done?

A nuclear medicine I 131 Metastatic survey Scan is used to detect areas of residual functioning thyroid tissue and thyroid cancer.

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What Will Happen During the Exam?

  • A Nuclear medicine technologist will perform the exam.
  • The technologist will give you a capsule of a radioactive I 131. You will then be instructed to return for imaging 48 hours later and again 5 or 7 days later.
  • Imaging on both days will take approximately 1 hour.
  • The camera is open so you are not completely surrounded and the technologist may stay in the scan room with you. You will be asked to hold still but, you do not need to hold your breath.
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How Should I Prepare?

Clothing

Please wear comfortable clothing.  Refrain from wearing jewelry.

Medications

Certain thyroid medications may need to be stopped prior to scheduling the procedure. Please consult with our scheduling department or your physician.

Food and Drink

You may eat and drink before and during the exam

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What Are the Benefits and Risks?

The benefits of I131 Metastatic Survey Scan:

A useful tool as a follow-up for patients with known thyroid cancer

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Where Can I Get This Exam?

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