title: Collimator and xenon-127 for ventilation studies.
abstract: In comparison with xenon-133, the more energetic emissions from xenon-127 suffer less attenuation by tissues and should therefore provide images with better resolution in ventilation studies. However, the better resolution of the low-energy collimator used with xenon-133 may outweigh such advantages of the more energetic emission of xenon-127, which requires a medium or high-energy collimator.
mesh_terms: D008168:Lung / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging / Q000295:instrumentation; D014692:Ventilation-Perfusion Ratio; D014980:Xenon Radioisotopes
chemical_list: D014980:Xenon Radioisotopes