title: The use of CT scans in estimating age at death by examining the extent of ectocranial suture closure.
abstract: We examined the utility of CT scans in the evaluation of degree of ectocranial suture closure. Five cranial points (left and right midcoronal positions, left and right midlambdoidal positions, and the lambda) were evaluated in 231 CT scans using a three-point scoring system (open, partial closed, and closed). The slice increment and thickness varied between three groups of the scans. The results showed a good correlation between degree of suture closure and increasing age in each group. Young individuals (<40 years) and old individuals (>60 years) could be clearly distinguished from the middle-aged individuals. ANOVA test revealed no difference between two groups of scans and between left and right sides (p > 0.05). Interobserver agreement was good, especially considering the score by sides. The results of this study create the base for developing a robust and simple method to estimate the age at death using CT scans.
authors.affiliation: Laboratory of Biological Anthropology, Department of Forensic Medicine, University of Copenhagen Frederik d. 5.'s Vej 11, DK-2100, Copenhagen, Denmark.
authors.forename: Kristen Leigh
authors.initials: KL
authors.lastname: Boyd
authors.forename: Chiara
authors.initials: C
authors.lastname: Villa
authors.forename: Niels
authors.initials: N
authors.lastname: Lynnerup
mesh_terms: D000328:Adult; D000365:Age Determination by Skeleton / Q000379:methods*; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D003393:Cranial Sutures / Q000000981:diagnostic imaging*; D005260:Female; D018732:Forensic Anthropology; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D055815:Young Adult
keywords: age estimation; computed tomography; cranial sutures; ectocranial; forensic anthropology; forensic science