Parathyroid Scintigraphy in Chennai
What is this study?
Parathyroid scintigraphy, also known as parathyroid imaging or parathyroid scan, is a nuclear medicine imaging procedure used to locate abnormal parathyroid glands in the neck. It helps in the diagnosis and localization of parathyroid adenomas, hyperplasia, or other lesions causing hyperparathyroidism.
What is the need for the study?
The parathyroid scintigraphy is performed to:
- Identify and localize abnormal parathyroid glands responsible for hyperparathyroidism, a condition characterized by excessive secretion of parathyroid hormone (PTH).
- Differentiate between parathyroid adenomas, hyperplasia, and other lesions causing hyperparathyroidism.
- Guide surgical planning and assist in the removal of abnormal parathyroid tissue during parathyroidectomy.
This study helps healthcare providers make accurate diagnoses and develop appropriate treatment plans to manage hyperparathyroidism and optimize patient outcomes.
How do I prepare?
Preparation for a parathyroid scintigraphy may include:
- Medication: Inform your healthcare provider about any medications you are taking, as certain medications may need to be temporarily stopped before the scan.
- Fasting: You may be instructed to fast for a period before the scan, typically for several hours, to ensure an empty stomach for accurate imaging.
- Calcium Supplements: Avoid taking calcium supplements or antacids containing calcium before the scan, as they can interfere with the uptake of the radioactive tracer.
Your healthcare provider will provide specific instructions on how to prepare for the parathyroid scintigraphy based on your individual circumstances.
How is this scan performed?
During a parathyroid scintigraphy:
- Radiotracer Injection: A small amount of a radioactive tracer, such as technetium-99m (Tc-99m) sestamibi or technetium-99m (Tc-99m) sestamibi with pertechnetate, is injected into a vein in your arm.
- Uptake Period: The tracer is allowed to circulate and be taken up by the parathyroid glands, which have increased metabolic activity compared to surrounding tissues.
- Imaging: A gamma camera is used to acquire images of the neck and chest, focusing on the area of the parathyroid glands. The camera detects the gamma rays emitted by the radioactive tracer, allowing visualization of the parathyroid glands and any abnormal uptake indicative of parathyroid lesions.
- Delayed Imaging: Delayed imaging may be performed several hours after tracer injection to allow time for the tracer to accumulate in the parathyroid glands and improve the detection of abnormal lesions.
What should I do after the scan?
After the parathyroid scintigraphy:
- Resume Normal Activities: You can usually resume your normal activities immediately after the scan.
- Follow-Up: Attend any scheduled follow-up appointments with your healthcare provider to review the results of the scan and discuss further management, if necessary.
Are there any risks in the study?
Parathyroid scintigraphy is generally considered safe and non-invasive. The amount of radiation exposure from the radioactive tracer used in the scan is minimal and poses little risk to most patients. However, as with any medical procedure involving radiation, there is a small risk of allergic reactions or adverse effects.
Your healthcare provider will discuss the potential risks and benefits of the parathyroid scintigraphy with you and address any concerns you may have before proceeding with the procedure.
It’s essential to follow all instructions provided by your healthcare provider and communicate any symptoms or concerns you experience during or after the parathyroid scintigraphy. Your healthcare team is here to support you throughout the process and ensure the best possible outcomes for your parathyroid health.
