A Sestamibi parathyroid scan also known as MIBI scan is a procedure performed to localize parathyroid adenoma, the main cause of hyperparathyroidism. A radiopharmaceutical or a radioactive agent, (a very mild and safe amount), called Sestamibi is injected into the veins of a patient with parathyroid disease or hyperparathyroidism which gets absorbed by the overactive parathyroid gland.
Adequate localization of parathyroid adenoma allows the surgeon to diagnose the overactive parathyroid gland and the potent causes of the bad parathyroid gland.
Also Read: Prenatal Scans: Know The Role of These Tests In Determining The Foetal Health
Sestamibi scans play a crucial role in nuclear medicine, offering valuable insights into various medical conditions. During the scan, the patient is injected with the Sestamibi tracer. The compound accumulates in specific tissues or organs. The emitted gamma rays are then detected by a gamma camera, producing detailed images for diagnostic purposes.
Purpose Of Sestamibi Scans
Here are the following ailments that this test covers:
Cardiac Imaging
One of the primary applications of Sestamibi scans is in assessing blood flow to the heart muscle. It helps diagnose coronary artery disease, evaluate the extent of damage after a heart attack, and determine the effectiveness of treatments like angioplasty or bypass surgery.
Parathyroid Gland Evaluation
Sestamibi scans are valuable in locating abnormal parathyroid glands. This aids in the diagnosis and surgical planning for conditions such as hyperparathyroidism.
Breast Imaging
Sestamibi scans are used to detect and evaluate breast cancer. The tracer highlights areas with increased metabolic activity, helping identify suspicious lesions.
Thyroid Imaging
In thyroid scans, Sestamibi can reveal the presence of abnormal nodules or tumours, assisting in the diagnosis and management of thyroid disorders.
Also Read: Computed Tomography/ CT Scan: Purpose, Procedure, Uses, And Side Effects
Risks Of Sestamibi Scans
While Sestamibi scans are generally safe, it is essential to be aware of potential risks:
Radiation Exposure: Sestamibi scans involve exposure to ionizing radiation. However, the doses used are considered safe, and the benefits of the diagnostic information obtained usually outweigh the risks.
Allergic Reactions: Some individuals may experience allergic reactions to the tracer injection, though such incidents are rare.
Pregnancy Concerns: Pregnant women are generally advised to avoid Sestamibi scans due to potential risks to the developing foetus. Alternative imaging methods or delaying the procedure until after pregnancy may be considered.
Also Read: SPECT Scan: Procedure, Risks And Results
Preparing for a Sestamibi Scan
Patients undergoing a Sestamibi scan should follow specific guidelines:
Fasting: For cardiac Sestamibi scans, patients are often required to fast before the procedure to enhance imaging quality.
Medication Review: Inform your healthcare provider about any medications you are taking, especially if they contain calcium channel blockers or nitrates.
If Pregnant Or Breastfeeding: Inform the healthcare team if you are pregnant or breastfeeding, as alternative imaging methods may be recommended.
Sestamibi Scan Results
Perfusion Defects In cardiac imaging, areas with reduced blood flow may indicate coronary artery disease or damage from a heart attack.
Parathyroid Localization: Increased uptake in a specific region of the neck can indicate the presence and location of abnormal parathyroid glands.
Tumor Detection: Sestamibi scans can reveal abnormal areas with heightened metabolic activity, helping identify tumours in organs such as the breast, thyroid, or other tissues.
Post Scan Process
Based on the results, healthcare providers may recommend additional tests, treatments, or surgical interventions to address the identified issues. While the procedure involves minimal risks, the benefits in terms of accurate diagnosis and treatment planning are substantial. Understanding the purpose, potential risks, and interpretation of results empowers patients and healthcare professionals in making informed decisions about medical care. Always consult with your healthcare provider to discuss individual circumstances and determine the most appropriate diagnostic approach.
References
- Technetium 99m Sestamibi
Author Information and Affiliations
Tony H. Rizk1; Shivaraj Nagalli2.
https://www.ncbi.nlm.nih.gov/books/NBK553148/
- Applications of Tc-99m Sestamibi: Cardiac Imaging and Beyond
Harleen Kaur, Mitchel Muhleman, Alia Gupta and Helena Balon
Journal of Nuclear Medicine May 2017, 58 (supplement 1) 970;
https://jnm.snmjournals.org/content/58/supplement_1/970
Disclaimer:
The content provided here is for informational purposes only. This blog is not intended to substitute for medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider for any questions or concerns you may have regarding a medical condition. Reliance does not endorse or recommend any specific tests, physicians, procedures, opinions, or other information mentioned on the blog.
