Spatial Distribution of Pulmonary Blood Flow in Dogs in Left Decubitus Position.

摘要

Spatial distributions of pulmonary blood flow (SDPBF) were measured in six dogs by injecting radioactive microspheres into the right ventricle and by computer-controlled scintiscanning of the surfaces of each cross section obtained by sectioning the entire excised fixed lungs into 1-cm-thick slices. SDPBF measured in the excised lungs was mathematically corrected to the in vivo parenchymal distribution at the time of the microsphere injection. Relative alveolar volume increased with the height along the left-to-right axis as well as in the apical region along the caudad-cephalad isogravitational axis of the thorax in the left decubitus position. (Author)