Localization of a Meckel's diverticulum is accomplished with which of the following radiopharmaceuticals?

The localization of a Meckel's diverticulum is accomplished using Tc99-Pertechnetate due to its specific uptake by gastric mucosa and certain ectopic gastric tissue, which may be present in a Meckel's diverticulum. This radiopharmaceutical functions by localizing in areas of increased gastric activity, allowing visualization of the diverticulum through nuclear imaging techniques.

Meckel's diverticulum is often associated with the presence of gastric mucosa, and the use of Tc99-Pertechnetate is particularly effective in identifying this condition because it highlights areas where the gastric mucosa, which could be ectopic, is present. When the radiopharmaceutical is administered, it is absorbed in the stomach as well as in any ectopic gastric tissue, leading to the characteristic imaging patterns used for diagnosis.

In contrast, the other radiopharmaceuticals listed, such as In111-pentetreotide, Tl-201 thallous chloride, and Ga67-citrate, are used for different diagnostic purposes, including detection of neuroendocrine tumors (In111-pentetreotide), cardiac viability and certain tumors (Tl-201), and inflammatory processes (Ga67-citrate). None of these have the same specificity for ectopic