title: Sex determination from os sacrum by postmortem CT.
abstract: Sex determination in forensic practice is performed mostly on sexually dimorphic bones, including pelvic bones such as the os sacrum. Postmortem CT scan provides an easy and fast method for depicting and measuring bone structures prior to elaborate autopsy preparations. To develop a simple and objective method for sex determination in postmortem CT, metric data were evaluated from CT images of the pelvic-associated os sacrum of 95 corpses (49 men and 46 women) from the Canton of Bern, Switzerland. Discriminant function analysis of the data showed that the best accuracy in determining sex was 76.8% and 78.9% with two different observers. It is concluded that measuring the os sacrumin postmortem CT for sex determination has moderate accuracy and should only be applied in combination with other methods.
authors.affiliation: Centre of Forensic Imaging and Virtopsy, Institute of Forensic Medicine, University of Bern, Switzerland. wolf-dieter.zech@irm.unibe.ch
authors.forename: Wolf-Dieter
authors.initials: WD
authors.lastname: Zech
authors.forename: Gary
authors.initials: G
authors.lastname: Hatch
authors.forename: Lea
authors.initials: L
authors.lastname: Siegenthaler
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Thali
authors.forename: Sandra
authors.initials: S
authors.lastname: Lösch
mesh_terms: D016002:Discriminant Analysis; D005260:Female; D018732:Forensic Anthropology; D006801:Humans; D008297:Male; D012447:Sacrum / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D054881:Sex Determination by Skeleton / Q000379:methods*; D014057:Tomography, X-Ray Computed