title: [The staging method of sternal end of clavicle epiphyseal growth by thin layer CT scan and imaging reconstruction].
abstract: OBJECTIVE
  To establish a CT staging method of sternal end of clavicle epiphyseal growth for teenagers by thin layer CT scan, multiplanar reconstruction (MPR) and volume reconstruction (VR) technologies.
  
  
  METHODS
  The CT imaging characteristics, which collected from 460 teenagers (aged from 15 to 25) in East and South China, were studied through both sternal ends of clavicles' imagings by thin layer coronal CT scan and axial CT scan, MPR and VR technologies. The parameters of sternal end of clavicle including the longest diameter of epiphysis, the longest diameter of metaphysis, their length ratio, area of epiphysis, area of metaphysis, and their area ratio were measured and calculated in order to establish new classification.
  
  
  RESULTS
  Based on the staging method of Schmeling, integrating the CT imaging reconstruction information of sternal end of clavicle, the new classification of sternal end of clavicle epiphyseal growth were divided into 1 to 5 stages, and stage 2 and stage 3, respectively, contained a, b and c sub-classification.
  
  
  CONCLUSIONS
  This new classification has merits of large sample size, wide age range and easy operability. By using CT imaging reconstruction techniques and analyzing the data which closely related to sternal end of clavicle epiphyseal growth of teenagers, the feasibility of the staging method could be increased.
authors.affiliation: Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, P.R.China, Shanghai 200063, China. wangyh@ssfjd.cn
authors.forename: Ya-Hui
authors.initials: YH
authors.lastname: Wang
authors.forename: Hua
authors.initials: H
authors.lastname: Wei
authors.forename: Chong-Liang
authors.initials: CL
authors.lastname: Ying
authors.forename: Lei
authors.initials: L
authors.lastname: Wan
authors.forename: Guang-You
authors.initials: GY
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D000328:Adult; D000365:Age Determination by Skeleton / Q000379:methods*; D002681:China; D002968:Clavicle / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000254:growth & development*; D004838:Epiphyses / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000254:growth & development; D005240:Feasibility Studies; D005260:Female; D018732:Forensic Anthropology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D010012:Osteogenesis; D012727:Sex Characteristics; D013249:Sternum / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000254:growth & development; D014057:Tomography, X-Ray Computed; D055815:Young Adult