title: [Experimental study of orbital volume using computer assisted technology].
abstract: OBJECTIVE
  To evaluate the accuracy of the Simplant analytic software for orbital volumetric measurement.
  
  
  METHODS
  The volume of 10 orbits from 5 skulls was evaluated with the Simplant analytic software, and compared with the volume obtained by direct measurement using the water displacement method. The accuracy of volume measurement using Simplant software was assessed statistically by paired t test with SAS6.12 software package.
  
  
  RESULTS
  The mean volume was found to be (28.82+/-1.65)ml by direct impression and (28.81+/-1.65)ml by the Simplant analytic software. There was no significant difference between the two methods (P>0.05). The correlation between the techniques was found to be high (r=0.971).
  
  
  CONCLUSIONS
  The Simplant analytic software for orbital volumetric measurement is a simple and accurate method. Supported by Shanghai Leading Academic Discipline Project (Grant No.Y0203).
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nanjing Stomatology Hospital, Nanjing University. Nanjing 210008, Jiangsu Province, China. www750726@tom.com
authors.forename: Yu-Xin
authors.initials: YX
authors.lastname: Wang
authors.forename: You-Sheng
authors.initials: YS
authors.lastname: Tang
authors.forename: Jun
authors.initials: J
authors.lastname: Shi
authors.forename: Bing
authors.initials: B
authors.lastname: Xu
mesh_terms: D006801:Humans; D009915:Orbit / Q000033:anatomy & histology*; D012984:Software; D014057:Tomography, X-Ray Computed