PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 8591306

Computer assisted bone age assessment.

H Dickhaus·S Wastl
View original source ↗Export metadata ↓

Abstract

Skeletal or bone age assessment is a very common and important task in the pediatric radiology. To estimate the bone age, visual methods are used which are strongly physician dependent and time-consuming. In order to overcome these disadvantages computerization of bone analysis is being tried. In this paper an approach for computer assisted bone age assessment is presented which tries to take typical computer capabilities into advantage by the concept of pattern recognition.

Explore related subjects

Age Determination by SkeletonBone DevelopmentChildFourier AnalysisHandHumansPattern Recognition, AutomatedRadiographic Image EnhancementSignal Processing, Computer-AssistedJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

H Dickhaus, S Wastl. 1995. Computer assisted bone age assessment.. https://pubmed.ncbi.nlm.nih.gov/8591306/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1998

Caroline Crachami, the Sicilian dwarf (1815-1824): was she really nine years old at death?

Caroline Crachami (C.C.) considered to have had the Seckel syndrome was one of the most extreme cases of dwarfism ever recorded. Reputedly born in Sicily in 1815, she attracted much attention when exhibited in England before her death on 3 June 1824. Although she is said to have been 9 years old at death, published descriptions give her a dental age varying from 2 to 7 years. Examination of her skull in the Royal College of Surgeons of England demonstrated a more or less erupted complete deciduous dentition, with no erupted permanent teeth. Radiographs showed agenesis of several permanent teeth. It was concluded that the dental age of C.C. was 3 years (+/- 6 months). Perikymata were evident in the surface enamel encircling the crown of the partially exposed maxillary left first permanent molar. Their distribution and spacing were normal, with no evidence of developmental retardation. The distance between the periradicular bands in the root near the cement-enamel junction was also normal. We conclude that the dental age of C.C. was similar to her chronological age and that at death she was about 3 and not 9 years old. The reason that she was said to be nearly 9 when exhibited in England we believe was related to financial considerations, as people would be generally less impressed with a dwarf only 3 years old. The new age we give C.C. has implications on the diagnosis of her medical condition.

Age Determination by Skeleton↗
PubMed1998

Intra- and inter-observer variation in histological criteria used in age at death determination based on femoral cortical bone.

The microscopic method of age at death determination was introduced by Kerley in 1965. The method, which relies on the quantification of selected elements in cortical bone tissue, has been widely used, and several other researchers have modified or added to the method. Yet, very few studies have been carried out dealing with the intra- and inter-observer error. Furthermore, when such studies have been completed, the statistical tools for assessing variability have not been adequate. This study presents the results of applying simple quantitative statistics on several counts of microscopic elements as observed on photographic images of cortical bone, in order to assess intra- and inter-observer error. Overall, substantial error was present at the level of identifying and counting secondary osteons, osteon fragments and Haversian canals. Only secondary osteons can be reliably identified, precluding the use of osteon fragments and Haversian canals. The observers in this study included experienced and inexperienced users of the microscopic method, yet the variability was uniformly large for all observers, suggesting fundamental problems in definition and identification of the structural elements. Until more rigorous definitions of such elements have been agreed upon, the use of microscopical methods must be discouraged as a sole or uncontrolled method of evaluating age at death.

Age Determination by Skeleton↗