In vivo measurement of radius calcium/phosphorus ratio by X-ray absorptiometry

Fountos, G.; Tzaphlidou, Margaret; Kounadi, E.; Glaros, D.

doi:10.1016/s0969-8043(99)00056-1

Cited by 45 publications

(37 citation statements)

References 14 publications

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“…The spectra were fitted using the method of Jeynes et al 25 and using DataFurnace 26 (NDF, a validated code 27 ). The fit of the backscattering data (with NDFv9.2d 28 ) uses SRIM2003 stopping powers 29,30,18 and evaluated EBS cross-sections from SigmaCalc 31,32,33 for 16 O() 16 O and 12 C() 12 C. The EBS was calculated with the best available convolutions in depth 34 to reproduce the spectrum accurately in the vicinity of the 3044 keV 16 O() 16 O resonance. Chu's correction to Bohr's (1915) theory of energy straggling 35,36 was used, and no correction was made for double scattering.…”

Section: Discussionmentioning

confidence: 99%

“…For this reason, hydroxyapatite (the most stable calcium phosphate found in the body) is one of the most researched biomaterials to date. For bulk analysis of such tissues, in-vivo methods involving absorptiometry of electromagnetic radiation have recently been developed 11,12 , but these methods provide limited spatial information. Methods based on X-ray spectrometry (XRS) are particularly suitable for such studies because their mapping capabilities permit the rapid location of spatial variations in the Ca:P ratio.…”

Section: Introductionmentioning

confidence: 99%

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Accurate determination of the Ca:P ratio in rough hydroxyapatite samples by SEM‐EDS, PIXE and RBS—a comparative study

et al. 2009

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The Ca:P ratio in a certified standard of hydroxyapatite was determined by Xray spectrometry (XRS), with the X-rays excited by both electrons and ions using energy dispersive spectroscopy on the scanning electron microscope (SEM-EDS) and particle induced X-ray emission (PIXE). The certified value of Ca:P was accurately verified by 3 MeV 4 He + Rutherford Backscattering Spectrometry (RBS).We show that the demonstrably rough surface of this sample does not cause perturbation of the Ca:P ratio within the uncertainties of each of the XRS measurements. Paper O4-8, EXRS

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accurate determination of the Ca:P ratio in rough hydroxyapatite samples by SEM‐EDS, PIXE and RBS—a comparative study

et al. 2009

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“…This ratio was similar to the value of 1.71 obtained for adult human bone. 13 These features indicate that the biochemical and biomechanical properties of SOCB ceramic closely resemble those of human bone. These properties should be preferable for supporting osteoblast growth and differentiation, which could result in complete bone regeneration when bone defects are treated with SOCB.…”

Section: Discussionmentioning

confidence: 79%

A novel hydroxyapatite ceramic bone substitute transformed by ostrich cancellous bone: Characterization and evaluations of bone regeneration activity

et al. 2011

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Various biomaterials have been used for bone repair and reconstruction of bone defects. Inorganic xenogenic bone substitutes have been intensively studied because they possesses favorable regenerative properties. The purpose of this study was to evaluate the properties of a novel inorganic xenogenic bone substitute, sintered ostrich cancellous bone (SOCB). Bone regeneration capability was also comparing to that of other bone substitutes in rabbit calvarial defects. Biochemical and biomechanical properties of the SOCB ceramic closely resembled those of human bone. Bone regeneration was evaluated by radiograph, histology, and histomorphometry. Bone regeneration was significantly enhanced in defects treated with SOCB when compared with other bone substitutes. The biochemical and biomechanical properties of SOCB are favorable for bone regeneration. SOCB might be a promising biomaterial for the repair of bone defects.

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“…On the other hand, Fountoset al [35] suggested thatin vivo measurements of the calcium/phosphorus ratio of bonemay be useful for assessing skeletal aging or some bone diseases.However, in this study, there were no differences in this ratioin the regions examined. Thus, FOS consumption might slightlyenhance mineral concentrations under physiologic conditions.…”

Section: Resultsmentioning

confidence: 99%

Nutritional Properties of Probiotics with Prebiotics and Their Potential to Impact on Mineral Absorption and Immunological Status in Vivo

Hanaa¹,

Ragab²

2014

IOSRJPBS

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In vivo measurement of radius calcium/phosphorus ratio by X-ray absorptiometry

Cited by 45 publications

References 14 publications

Accurate determination of the Ca:P ratio in rough hydroxyapatite samples by SEM‐EDS, PIXE and RBS—a comparative study

Accurate determination of the Ca:P ratio in rough hydroxyapatite samples by SEM‐EDS, PIXE and RBS—a comparative study

A novel hydroxyapatite ceramic bone substitute transformed by ostrich cancellous bone: Characterization and evaluations of bone regeneration activity

Nutritional Properties of Probiotics with Prebiotics and Their Potential to Impact on Mineral Absorption and Immunological Status in Vivo

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