Complex sentence: Pertechnetate radiolabeled with Tc99m is also the marker injected into the body looking for ectopic gastric tissue as is found in a Meckel's diverticulum and is nuclear imaging study otherwise known as a "Meckel's Scan".
Split into simpler sentences: Pertechnetate radiolabeled with Tc99m is also the marker injected into the body looking for ectopic gastric tissue as is found in a Meckel's diverticulum. This nuclear imaging study is otherwise known as a "Meckel's Scan".