Generation of parametric images during routine Tc-99m PYP inhalation/Tc-99m MAA perfusion lung scintigraphy. Technical note.
A simple technique is described for generating ventilation/perfusion ratio and perfusion/ventilation ratio images from the posterior Tc-99m PYP aerosol inhalation and Tc-99m MAA perfusion images obtained during routine lung scintigraphy. These images highlight areas of ventilation/perfusion incongruence--mismatch or reverse mismatch--that may sometimes be difficult to detect on conventional images.
Miron
S D
SD
Department of Radiology, MetroHealth Medical Center/Case Western Reserve University School of Medicine, Cleveland, Ohio 44109.
Wiesen
E J
EJ
Feiglin
D H
DH
Cohen
A M
AM
Bellon
E M
EM
D000336:Aerosols; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008168:Lung / Q000000981:diagnostic imaging*; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013668:Technetium Tc 99m Aggregated Albumin; D016698:Technetium Tc 99m Pyrophosphate; D014692:Ventilation-Perfusion Ratio / Q000502:physiology*
D000336:Aerosols; D013668:Technetium Tc 99m Aggregated Albumin; D016698:Technetium Tc 99m Pyrophosphate