title: Direct quantitation of thoracic gallium-67 uptake in sarcoidosis.
abstract: A method of direct quantitation of 67Ga uptake in the lung is described. The attenuation coefficient requires calculation and is obtained simply for each patient by transmission using a planar radionuclide source. The validity of the method was tested with a phantom (error less than 10%). Forty-three patients with pulmonary and/or mediastinal sarcoidosis were classified. The different groups of patients as defined clinically and radiographically (controls, nonactive, and active sarcoidosis) were well-differentiated (p less than 0.001).
mesh_terms: D000328:Adult; D005260:Female; D005710:Gallium Radioisotopes; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D008297:Male; D008722:Methods; D011877:Radionuclide Imaging; D012507:Sarcoidosis / Q000000981:diagnostic imaging*
chemical_list: D005710:Gallium Radioisotopes