Assessment of regional ventilation by continuous inhalation of radioactive krypton-81m.
A simple technique is described for producing high-quality functional images of regional ventilation during physiological tidal breathing of the inert gas 81mKr. These images are quickly obtained on a gamma-camera without the need of computerized systems for data acquisition and display and are directly comparable with those of perfusion obtained with 99mTc-labelled macroaggregates. The short time required for the procedure, its simplicity, and the extremely low absorbed-radiation dose enable serial images of ventilation to be obtained in multiple views.
D004417:Dyspnea / Q000503:physiopathology; D006801:Humans; D007726:Krypton; D008297:Male; D008875:Middle Aged; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012129:Respiratory Function Tests / Q000379:methods*; D014692:Ventilation-Perfusion Ratio
D011868:Radioisotopes; D007726:Krypton