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Table 2 Reported sensitivity of current imaging modalities for localizing the site of ectopic ACTH secretion

From: Failure of functional imaging with gallium-68-DOTA-D-Phe1-Tyr3-octreotide positron emission tomography to localize the site of ectopic adrenocorticotropic hormone secretion: a case report

Imaging Modalities Sensitivity Specificity
CT and MRI [7] 53 -74% n/a
111-indium pentetreotide SRS [1] 33-88% n/a
18-FDG PET scanning [8] 35-66% n/a
Gallium 68-DOTATOC PET scanning [2] 82% n/a