Linear measurements of cortical bone and dental enamel by computed tomography: Applications and problems

Wiley - Tập 91 Số 4 - Trang 469-484 - 1993
C. Fred Spoor1, Frans W. Zonneveld2, Gabriele A. Macho3
1Department of Human Anatomy and Cell Biology, University of Liverpool, United Kingdom
2Department of Radiology, Utrecht University Hospital, The Netherlands
3Hominid Palaeontology Research Group, Department of Human Anatomy and Cell Biology, University of Liverpool, Liverpool L69 3BX, United Kingdom

Tóm tắt

AbstractThis paper explores the potential of high‐resolution computed tomography (CT) as a morphometric tool in paleoanthropology. The accuracy of linear measurements of enamel thickness and cortical bone thickness taken from CT scans is evaluated by making comparison with measurements taken directly from physical sections. The measurements of cortical bone are taken on extant and fossil specimens with and without attached matrix, and the dental specimens studied include a sample of 12 extant human molars. Local CT numbers (representing X‐ray, attenuation) are used to determine the exact position of the boundaries of a structure. Using this technique most studied dimensions, including four of human molar enamel thickness, could be obtained from CT scans with a maximum error range of ±0.1 mm. The limitations of the method are discussed with special reference to problems associated with highly mineralized fossils. © 1993 Wiley‐Liss, Inc.

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Tài liệu tham khảo

10.1098/rstb.1991.0109

10.1097/00004424-198107000-00017

10.1002/ajpa.1330700205

Blumenfeld SM, 1981, Radiology of the Skull and Brain (Vol. 5); Technical Aspects of Computed Tomography, 3918

10.1088/0031-9155/21/3/004

Conroy GC, 1991, Enamel thickness in South African australopithecines: Noninvasive evaluation by computed tomography, Palaeont. Afr., 28, 53

10.1126/science.2305255

10.1002/ajpa.1330800111

10.1002/ajpa.1330860302

10.1002/ajpa.1330860210

DeanMC BeynonAD ThackerayJF andMachoGA: (1993) Histological reconstruction of dental development and age at death of a juvenile Paranthropus robustus specimen SK 63 from Swartkrans South Africa.Am. J. Phys. Anthrop.(this issue).

Demes B, 1990, Functional adaptations in corpus morphology of neandertal mandibles, Am. J. Phys. Anthropol., 81, 214

10.1118/1.594771

Elliott JC, 1989, Proceedings of the fifth International Symposium on the composition, properties, and fundamental structure of tooth enamel and related tissues

10.1148/radiology.157.1.4034968

10.1118/1.594678

Goodenough DJ, 1981, Volume averaging limitations of computed tomography, AJNR, 2, 585

Grine FE, 1991, Computed tomography and the measurement of enamel thickness in extant hominoids: Implications for its palaeontological application, Palaeont. Afr., 28, 61

Grine FE, 1988, Evolutionary History of the “Robust” Australopithecines, 3

10.1002/ajpa.1330500219

10.1148/130.1.189

MachoGA andBernerME: (1993) Enamel thickness of human maxillary molars reconsidered.Am. J. Phys. Anthrop.(in press).

MachoGA andBernerME: (n. d.)Enamel thickness of the helicoidal occlusal plane.

10.1002/ajpa.1330890202

MacovskiA AlvarezRE ChanJLH andStonestromJP: (1975)Correction for spectral shift artifacts in X‐ray computerized tomography. In: Image Processing for 2D and 3D Reconstruction From Projections (Opt. Soc. Am.). Stanford CA MB1/5–8.

10.3109/03009738709178698

10.1002/ajpa.1330330507

MartinLB: (1983)The relationship of the later Miocene Hominoidea. PhD thesis University College London London.

10.1038/314260a0

10.1002/ajpa.1330460310

10.1016/S0047-2484(77)80013-4

de BeekJCA Op andLobregtS: (1985) Method and computer tomography device for determining a tomographic image with elevated resolution United States patent 4555760 November 26.

Ruehrnschopf EP, 1980, Artefacts caused by non‐linear partial volume and spectral hardening effects in computerized tomography, Electromedica, 49, 96

10.1002/ajpa.1330290508

10.2214/ajr.136.4.777

10.1016/S0047-2484(85)80054-3

Spoor CF, 1991, Biometry using computed tomography, a phantom study, Eur. J. Morphol., 29, 116

SpoorCF andZonneveldFW: (1993) The bony labyrinth in Homo erectus a preliminary report.Cour. Forsch. Senckenberg(in press).

10.1002/ajpa.1330680209

10.1002/ajpa.1330580108

10.1148/radiology.134.1.7350593

10.1007/BF01744873

Zonneveld FW, 1984, The relationship between slice thickness and image quality in CT, Medicamundi, 29, 104

Zonneveld FW, 1985, Hominid Evolution: Past, Present and Future, 427

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Wiley

Tập 91 Số 4

469-484

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