Intestinal imaging for diagnosis of ectopic gastric mucosa leads to localization of Meckel's diverticulum, an appendage in the ileocecal region. It is the residue of the omphalomesenteric duct (yolk stalk) that normally should disappear during the fetal development. The radionuclear imaging procedure, also known as Meckel's scan or scintigraphy, uses a larger field–of–view (LFOV) gamma camera to detect the concentration of radioactive substances (radioisotopes such as technetium–99m pertechnetate, injected intravenously) in ectopic gastric mucosa in the diverticulum. The patient is asked to stop food intake at least four hours prior to the procedure. The imaging takes about 30 minutes to complete, excluding the pre–imaging procedures and formalities.
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