title: Radiological seminar CCXXVI: right-to-left shunting in perfusion lung imaging.
mesh_terms: D004541:Eisenmenger Complex / Q000000981:diagnostic imaging*; D006345:Heart Septal Defects, Ventricular / Q000000981:diagnostic imaging*; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging