Name of the Procedure:

Thyroid Uptake, Single or Multiple Quantitative Measurement(s) (including Stimulation, Suppression, or Discharge, when Performed)

Summary

Thyroid uptake is a diagnostic test to measure how much iodine the thyroid gland absorbs from the blood. This helps in assessing the gland's function by using radioactive iodine and a special camera.

Purpose

This procedure helps diagnose thyroid conditions such as hyperthyroidism or hypothyroidism. The expected outcome is a clear measurement of thyroid activity to guide further treatment.

Indications

• Symptoms of thyroid dysfunction such as unexplained weight changes, fatigue, and heart palpitations.
• Abnormal thyroid hormone levels in blood tests.
• Evaluation of thyroid nodules or goiters.

Preparation

• Patients may need to avoid taking iodine-containing medications or supplements for a period before the test.
• Fasting 4-6 hours before the procedure may be required.
• A blood test might be conducted to determine baseline thyroid levels.

Procedure Description

1. The patient ingests a small radioactive iodine capsule.
2. After a specified time (typically 4-6 hours and sometimes repeated after 24 hours), the patient lies on a table.
3. A gamma camera measures the amount of radioactive iodine absorbed by the thyroid.
4. Based on specific protocols, the test may include stimulation or suppression techniques using other medications.

Duration

The initial ingestion takes a few minutes, while the scanning part takes about 30-60 minutes.

Setting

Performed in a hospital's nuclear medicine department or an outpatient clinic.

Personnel

• Nuclear medicine technologist
• Radiologist or nuclear medicine physician

Risks and Complications

• Minimal exposure to radiation, generally considered safe.
• Rare allergic reaction to the radioactive substance.
• Possible discomfort from remaining still during scans.

Benefits

• Non-invasive procedure providing crucial information about thyroid function.
• Helps in precisely diagnosing thyroid disorders, aiding in targeted treatment planning.

Recovery

• Typically, no recovery time is needed; patients can usually resume normal activities immediately.
• Specific instructions may be given regarding the intake of other medications or precautions due to radioactive exposure.

Alternatives

• Thyroid function blood tests (e.g., TSH, T3, T4 levels).
• Thyroid ultrasound.
• Fine needle aspiration biopsy for thyroid nodules.

Pros and Cons:

• Thyroid uptake provides functional information compared to structural information from an ultrasound.
• Blood tests offer broader hormone level information but don’t measure iodine uptake directly.

Patient Experience

• Patients may feel little to no discomfort during the procedure.
• The intake of the radioactive capsule is similar to swallowing a regular pill.
• Maintaining minimal movement during the scans might cause slight discomfort, but no pain is expected.

Pain management tips and comfort measures will be provided to ensure a smooth experience.