What type of scans are performed using filtered Tc Sulfur Colloid?

• A. Lymphoscintigraphy
• B. Bone scans
• C. Brain scans
• D. Thyroid scans

Answer: (A)

Filtered Tc Sulfur Colloid is primarily used in lymphoscintigraphy, which is a diagnostic imaging technique employed to visualize the lymphatic system. This radiopharmaceutical is injected near a region of interest, usually near a tumor or in cases of suspected lymphedema, to trace the pathway of lymph flow and detect any abnormalities such as blockages or changes in lymphatic drainage.

In lymphoscintigraphy, the filtered Tc Sulfur Colloid serves as a tracer that accumulates in the lymph nodes, allowing healthcare providers to assess the status of lymphatic pathways and identify issues related to cancer spread or lymphatic function.

While there are other types of scans listed, such as bone scans, brain scans, and thyroid scans, each utilizes different radiopharmaceuticals specifically targeted to their respective organs or conditions, and therefore do not involve filtered Tc Sulfur Colloid. Bone scans typically use compounds like technetium-99m methylene diphosphonate (MDP), brain scans might utilize different tracers aimed at cerebral metabolism or blood flow, and thyroid scans often employ iodine tracers. Thus, the unique properties and application of filtered Tc Sulfur Colloid make it distinctly suitable for lymphoscintigraphy.