Scott WilliamsNuclear MedicinePulmonaryPulmonary > V-Q examScott WilliamsApr 2, 2002 Ventilation/Perfusion Imaging Examination Technique & Radiopharmaceuticals Perfusion Agent- Tc-MAA Ventilation Agents: Xenon-133 Xenon 127 Tc-99m DTPA Aerosol Tc-99m Technegas Krypton-81m Modifications to the Standard V/Q exam V/Q Scintigraphy in Pregnancy Etiologies of Characteristic Patterns on V/Q Scan: V/Q Mismatch Heterogeneous perfusion pattern Decreased perfusion to one lung Artifacts on V/Q scintigraphy Latest in PulmonaryPulmonary > V-Q examApril 3, 2011Pulmonary > V-Q examMarch 31, 2011Pulmonary > PENovember 23, 2008Pulmonary > PENovember 23, 2008