title: [Single plane Simpson's method for measurement of right ventricular volume by X-ray ventriculography].
abstract: OBJECTIVE
  To study the validity of single plane Simpson's method with conventional X-ray ventriculography for estimation of right ventricular (RV) volume.
  
  
  METHODS
  Fifteen human RV casts were obtained from 15 subjects who died from non-cardiac causes within 24 hours after death. These casts were photographed respectively and their volumes were calculated by using the single plane Simpson's method based on a new half-circle model. The actual RV cast volumes were determined by water displacement method.
  
  
  RESULTS
  The actual RV volume was (64.23 +/- 24.51) ml and the calculated volume was (58.04 +/- 24.45) ml. The calculated RV volume underestimated the actual volume by (6.19 +/- 12.38) ml, but there was no significant difference between the actual and the calculated RV volume (P > 0.05). There was a significant correlation between the actual cast volume and the calculated volume (r = 0.983, P < 0.01). The regression equation was: RV actual volume = 1.074 x (RV calculated volume).
  
  
  CONCLUSIONS
  RV volume calculated by single plane Simpson's method with conventional X-ray ventriculography is accurate and deserves further study.
authors.affiliation: Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Cui
authors.forename: Zhi-Qun
authors.initials: ZQ
authors.lastname: Han
authors.forename: Yan-Guang
authors.initials: YG
authors.lastname: Feng
authors.forename: Wei-Gang
authors.initials: WG
authors.lastname: Wang
authors.forename: Jing-Chao
authors.initials: JC
authors.lastname: Lu
authors.forename: Zi-Ying
authors.initials: ZY
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000790:Angiocardiography / Q000379:methods*; D002306:Cardiac Volume; D002648:Child; D002675:Child, Preschool; D005240:Feasibility Studies; D005260:Female; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D008955:Models, Cardiovascular; D016278:Ventricular Function, Right; D014965:X-Rays; D055815:Young Adult