Treppo, Steven, Srboljub M. Mijailovich, and José G. Venegas. Contributions of pulmonary
perfusion and ventilation to heterogeneity in V˙ a/Q˙ measured by PET. J. Appl. Physiol. 82 …

Using positron emission tomography (PET) and intravenously injected 13N2, we assessed
the topographical distribution of pulmonary perfusion (Q˙) and ventilation (V˙) in six healthy …

Mijailovich, Srboljub, Steven Treppo, and José G. Venegas. Effects of lung motion and tracer
kinetics corrections on PET imaging of pulmonary function. J. Appl. Physiol. 82 (4): 1154 …

Regional measurements of tissue isotope concentration, made using positron emission
tomography (PET), allow tracer models to be used in a quantitative manner to provide …

The gravitational gradient of intrapleural pressure is suggested to be less in prone posture
than supine. Thus the gravitational distribution of ventilation is expected to be more uniform …

With positron emission tomography, quantitative measurements of regional alveolar and
mixed venous concentrations of positron-emitting radioisotopes can be made within a …

The topographic matching of alveolar ventilation (V̇ A) and perfusion (Q̇) is the main
determinant of gas exchange efficiency of the lung. However, no pulmonary functional …

The arterial blood PO 2 is increased in the prone position in animals and humans because
of an improvement in ventilation (V˙ a) and perfusion (Q˙) matching. However, the …

We evaluated the effect of prone positioning on gas-transfer characteristics in normal human
subjects. Single-breath (SB) and rebreathing (RB) maneuvers were employed to assess …

Positron emission tomography was used to measure alveolar gas volume, pulmonary blood
volume (VB), regional alveolar ventilation (VA), and the regional ventilation-to-perfusion …