title: Adrenal scintigraphy: comparison of the Anger tomoigraphic scanner and the large-field gamma camera: concise communication.
abstract: To evaluate observer performance in adrenal scintigraphy with two different imaging instruments and to assess the requirement for computer processing in routine adrenal imaging, gamma-camera images (analog and computer processed) and Anger tomoscanner studies were independently interpreted by three observers. Thirty-eight pairs of images were used for the analysis of the receiver operating characteristic (ROC) curve in comparing the tomoscanner with the large-field gamma camera, and 44 pairs of images were used for the comparison of the gamma camera analog images with computer-processed images. ROC analysis demonstrated a higher detection rate for the tomographic images. The computer-processed images did not improve adrenal detection. When each case was considered individually, the tomoiscanner was preferred in 37% of cases, and in 50% of cases, both instruments were considered to be equaly valuable.
mesh_terms: D000293:Adolescent; D000307:Adrenal Gland Diseases / Q000000981:diagnostic imaging*; D000311:Adrenal Glands / Q000473:pathology; D000328:Adult; D000368:Aged; D003202:Computers, Analog; D003480:Cushing Syndrome / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D006929:Hyperaldosteronism / Q000000981:diagnostic imaging; D006965:Hyperplasia; D007457:Iodine Radioisotopes; D008297:Male; D008875:Middle Aged; D010781:Photography / Q000295:instrumentation; D011877:Radionuclide Imaging / Q000295:instrumentation* / Q000379:methods; D014054:Tomography / Q000295:instrumentation; D014055:Tomography, Emission-Computed / Q000295:instrumentation / Q000379:methods; D014792:Visual Acuity
chemical_list: D007457:Iodine Radioisotopes