title: [Noninvasive identification of the origin of ventricular premature contraction by phase analysis of radionuclide ventriculography].
mesh_terms: D000328:Adult; D005117:Cardiac Complexes, Premature / Q000175:diagnosis*; D004562:Electrocardiography; D005260:Female; D005583:Fourier Analysis; D006321:Heart / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium