title: [The correlation of the stroke volume with pulmonary venous volume and left atrial volume].
abstract: OBJECTIVE
  The same person's pulmonary venous blood volume, left atrial volume and stroke volume were measured by lung CT scans and cardiac CT angiography (CTA). Then their relationships were analyzed in order to investigate the mechanism of breathing control.
  
  
  METHODS
  As we described before, full pulmonary vascular (-0.6mm) volume was accurately calculated by three-dimensional imaging technology from lung CT scan; left atrial volume and stroke volume of left ventricle were calculated from the CTA data. Then the relationships among them were analyzed for estimation of the lung-artery time.
  
  
  RESULTS
  The total volume of lung and pulmonary vascular blood was 3486 ± 783 (2156-4418) ml, and the pulmonary vascular blood volume was 141 ± 20 (105-163) ml. The estimated pulmonary venous volume was 71 ± 10 (52-81) ml. Left atrial volume at the end diastolic was 97 ± 39 (53-165) ml, Stroke volume of left ventricle was 86 ± 16 (60-106) ml. Pulmonary venous volume and the left atrial volume were double of stroke volume(1.7-2.4).
  
  
  CONCLUSIONS
  The estimated lung-artery time was three heart beat.
authors.forename: Xing-guo
authors.initials: XG
authors.lastname: Sun
authors.forename: Song-shou
authors.initials: SS
authors.lastname: Mao
authors.forename: M J
authors.initials: MJ
authors.lastname: Budoff
authors.forename: W W
authors.initials: WW
authors.lastname: Stringer
authors.forename: Xian-sheng
authors.initials: XS
authors.lastname: Cheng
mesh_terms: D001810:Blood Volume; D006325:Heart Atria; D006801:Humans; D013318:Stroke Volume