What type of imaging is typically performed using Tc-99m DMSA?

• A. Brain imaging for tumors
• B. Cardiac imaging for blood flow
• C. Renal imaging to evaluate kidney function
• D. Bone imaging for fractures

Answer: (C)

The use of Tc-99m DMSA (Dimercaptosuccinic acid) is specifically associated with renal imaging, making it the appropriate choice for evaluating kidney function. This radiopharmaceutical is particularly effective due to its high renal uptake and retention in the renal cortex, allowing for detailed images of the kidney's structure and function.

When Tc-99m DMSA is administered, it highlights areas of the kidneys, facilitating the assessment of renal perfusion and function. It is especially useful for detecting conditions such as renal scarring, tumors, and obstruction. The imaging results can provide important insights into the health of the kidneys, helping clinicians diagnose various renal disorders.

Other types of imaging purposes do not align with the specific properties and applications of Tc-99m DMSA. For example, brain imaging typically relies on different radiopharmaceuticals designed to assess cerebral blood flow or activity, while cardiac imaging focuses on myocardial perfusion and typically utilizes Tc-99m compounds like sestamibi or tetrofosmin. Bone imaging also uses different agents that target bone metabolism rather than renal function. Hence, the distinction for Tc-99m DMSA clearly places it within the realm of renal imaging.