Best diagnosis of the ectopic gastric mucosa of Meckel's diveiculum is by

Plain abdominal radiography, CT, and ultrasonography are rarely helpful.In children, the single most accurate diagnostic test for Meckel's diveicula is scintigraphy with sodium 99mTc-peechnetate. The 99mTc-peechnetate is preferentially taken up by the mucus-secreting cells of gastric mucosa and ectopic gastric tissue in the diveiculum. The diagnostic sensitivity of this scan has been repoed as high as 85%, with a specificity of 95% and an accuracy of 90% in the pediatric age group.In adults, however, the sensitivity of 99mTc-peechnetate scan falls to 63% because of the presence of less gastric mucosa in the diveiculum compared with that noted in the pediatric age group.Sabiston 20e pg:1310