title: Ventilation and perfusion display in a single image.
abstract: A new method of ventilation and perfusion display onto a single image is presented. From the data on regions of interest of the lungs, three-dimensional histograms are created, containing as parameters X and Y for the position of the pixels, Z for the perfusion and colour for local ventilation. The perfusion value is supplied by sets of curves having Z proportional to the local perfusion count rate. Ventilation modulates colour. Four perspective views of the histogram are simultaneously displayed to allow visualization of the entire organ. Information about the normal ranges for both ventilation and perfusion is also provided in the histograms.
authors.affiliation: Serviço de Biofisica, Faculdade Medicina, Coimbra, Portugal.
authors.forename: J J
authors.initials: JJ
authors.lastname: de Lima
authors.forename: M F
authors.initials: MF
authors.lastname: Botelho
authors.forename: A M
authors.initials: AM
authors.lastname: Pereira
authors.forename: J A
authors.initials: JA
authors.lastname: Rafael
authors.forename: M A
authors.initials: MA
authors.lastname: Marques
authors.forename: A J
authors.initials: AJ
authors.lastname: Pinto
authors.forename: F
authors.initials: F
authors.lastname: Godinho
authors.forename: M C
authors.initials: MC
authors.lastname: Pereira
authors.forename: M F
authors.initials: MF
authors.lastname: Baganha
mesh_terms: D000328:Adult; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008168:Lung / Q000000981:diagnostic imaging*; D008173:Lung Diseases, Obstructive / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging; D011656:Pulmonary Emphysema / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D013668:Technetium Tc 99m Aggregated Albumin; D014692:Ventilation-Perfusion Ratio; D014980:Xenon Radioisotopes
chemical_list: D013668:Technetium Tc 99m Aggregated Albumin; D014980:Xenon Radioisotopes