title: Combined scintigraphic study of the lung: what does the inhalation study add?
abstract: In 175 patients the results of combined isotope studies i. e. inhalation and perfusion scintigraphy were compared with those of chest x-ray. The absorbed radiation dose due to the inhalation study calculated for whole body was 3 mrad/500 muCi, lungs 380 mrad/500 muCi, ovaries 0.3 mrad/500 muCi and testes 0.03 mrad/500 muCi. In 44 of our cases the isotope studies suggested the presence of a vascular occlusion, not detectable on the x-ray film in 36 cases. In the remaining 8 cases the inhalation study was found to add to the precision of the diagnosis. In nearly all other cases it was not found to have any diagnostic value.
mesh_terms: D000328:Adult; D000336:Aerosols; D000368:Aged; D005260:Female; D006801:Humans; D007204:Indium; D008171:Lung Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D010477:Perfusion; D011655:Pulmonary Embolism / Q000175:diagnosis; D011829:Radiation Dosage; D011859:Radiography; D011868:Radioisotopes; D011877:Radionuclide Imaging / Q000009:adverse effects / Q000379:methods; D013667:Technetium
chemical_list: D000336:Aerosols; D011868:Radioisotopes; D007204:Indium; D013667:Technetium