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Technetium Tc-99m sulfur colloid is a radiopharmaceutical diagnostic agent used for the localization of lymph nodes, evaluation of peritoneovenous (LeVeen) shunt patency, imaging areas of functioning reticuloendothelial cells, and gastrointestinal imaging.
Technetium Tc-99m sulfur colloid is a radiopharmaceutical diagnostic agent used for the localization of lymph nodes, evaluation of peritoneovenous (LeVeen) shunt patency, imaging areas of functioning reticuloendothelial cells, and gastrointestinal imaging.
Following injection or oral administration, single photon emission computer tomography (SPECT) imaging is performed using a gamma camera to detect technetium-99m decay. This is possible as Technetium-99m decays by isomeric transition to technetium-99 through the release of a gamma ray.
Technetium 99m sulfur colloid is indicated as a diagnostic agent in adults for the following tests: localization of lymph nodes draining a primary tumor in patients with breast cancer or malignant melanoma; and evaluation of peritoneo-venous (LeVeen) shunt patency. It is indicated in both adult and pediatric patients for: imaging areas of functioning reticuloendothelial cells in the liver, spleen and bone marrow; and studies of esophageal transit and gastroesophageal reflux, and detection of pulmonary aspiration of gastric contents.
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