Lymphoscintigraphy in Chennai
What is this study?
Lymphoscintigraphy is a nuclear medicine imaging procedure used to evaluate the lymphatic system, particularly to assess lymphatic drainage and identify abnormalities such as lymphatic obstruction or lymph node metastasis. It involves the injection of a radioactive tracer into the lymphatic vessels, followed by imaging to track the movement of the tracer through the lymphatic system.
What is the need for the study?
Lymphoscintigraphy is performed to:
- Evaluate lymphatic drainage patterns and identify any abnormalities, such as lymphedema or lymphatic obstruction, which may be causing symptoms such as swelling or discomfort.
- Assist in the staging of certain cancers, particularly melanoma and breast cancer, by detecting lymph node involvement or metastasis.
- Guide surgical planning, such as sentinel lymph node biopsy, by identifying the sentinel lymph nodes that drain a specific area of the body.
This study helps healthcare providers make accurate diagnoses, plan appropriate treatment strategies, and monitor the effectiveness of interventions aimed at improving lymphatic function.
How do I prepare?
Preparation for a lymphoscintigraphy 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.
- Hydration: Drink plenty of fluids before the scan to ensure adequate hydration, which can help improve the distribution of the radioactive tracer.
- Clothing: Wear loose, comfortable clothing that allows easy access to the injection site and imaging areas.
Your healthcare provider will provide specific instructions on how to prepare for the lymphoscintigraphy based on your individual circumstances.
How is this scan performed?
During a lymphoscintigraphy:
- Radiotracer Injection: A small amount of a radioactive tracer, usually technetium-99m (Tc-99m) sulphur colloid or nanocolloid, is injected into the tissue near the area of interest, such as the site of lymphatic drainage or the tumor location.
- Imaging: A gamma camera is used to acquire images of the lymphatic system over a period of time, typically several hours. The camera detects the gamma rays emitted by the radioactive tracer, allowing visualization of the tracer as it moves through the lymphatic vessels and accumulates in the lymph nodes.
- Delayed Imaging (Optional): Delayed imaging may be performed several hours after tracer injection to track the movement of the tracer over time and assess lymphatic drainage patterns more thoroughly.
What should I do after the scan?
After the lymphoscintigraphy:
- 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?
Lymphoscintigraphy 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 at the injection site.
Your healthcare provider will discuss the potential risks and benefits of the lymphoscintigraphy 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 lymphoscintigraphy. Your healthcare team is here to support you throughout the process and ensure the best possible outcomes for your lymphatic health.
