| A new high-resolution computed tomography (CT) segmentation method for trabecular bone architectural analysis. | |
| | |
MedLine Citation:
|
PMID: 19280676 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In the last decade, high-resolution computed tomography (CT) and microcomputed tomography (micro-CT) have been increasingly used in anthropological studies and as a complement to traditional histological techniques. This is due in large part to the ability of CT techniques to nondestructively extract three-dimensional representations of bone structures. Despite prior studies employing CT techniques, no completely reliable method of bone segmentation has been established. Accurate preprocessing of digital data is crucial for measurement accuracy, especially when subtle structures such as trabecular bone are investigated. The research presented here is a new, reproducible, accurate, and fully automated computerized segmentation method for high-resolution CT datasets of fossil and recent cancellous bone: the Ray Casting Algorithm (RCA). We compare this technique with commonly used methods of image thresholding (i.e., the half-maximum height protocol and the automatic, adaptive iterative thresholding procedure). While the quality of the input images is crucial for conventional image segmentation, the RCA method is robust regarding the signal to noise ratio, beam hardening, ring artifacts, and blurriness. Tests with data of extant and fossil material demonstrate the superior quality of RCA compared with conventional thresholding procedures, and emphasize the need for careful consideration of optimal CT scanning parameters. |
| | |
Authors:
|
Heike Scherf; Rico Tilgner |
Related Documents
:
|
9507606 - Mri follow-up of pisiform bone transposition for treatment of lunatomalacia. 12639656 - Limited value of bone scintigraphy and computed tomography in assessing biochemical fai... 22426566 - Mri assessment of bone marrow in children with juvenile idiopathic arthritis: intra- an... 1584946 - Influence of calibration materials in single- and dual-energy quantitative ct. 3209846 - Parainflammatory leukoencephalomyelitis: clinical and magnetic resonance imaging findings. 9402676 - Three-dimensional contrast-enhanced mr angiography. |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: American journal of physical anthropology Volume: 140 ISSN: 1096-8644 ISO Abbreviation: Am. J. Phys. Anthropol. Publication Date: 2009 Sep |
Date Detail:
|
Created Date: 2009-09-01 Completed Date: 2009-11-17 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0400654 Medline TA: Am J Phys Anthropol Country: United States |
Other Details:
|
Languages: eng Pagination: 39-51 Citation Subset: IM |
Copyright Information:
|
Copyright 2009 Wiley-Liss, Inc. |
Affiliation:
|
Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, D-04103 Leipzig, Germany. heike.scherf@eva.mpg.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms Animals Bone and Bones / anatomy & histology* Femur / anatomy & histology Fossils Hominidae / anatomy & histology Humans Humerus / anatomy & histology Imaging, Three-Dimensional Lemur / anatomy & histology Tomography, X-Ray Computed / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The causes of porotic hyperostosis and cribra orbitalia: a reappraisal of the iron-deficiency-anemia...
Next Document: Predictors of neuropsychiatric symptoms in nursing home patients: influence of gender and dementia s...