Determination of bone density using photon scattering methods [texte imprimé] /
Tewfik Baba Hamed, Auteur ;
Nicholas M. Spyrou, Directeur de thèse . -
University of Surrey, 1986 . - 48 f. : ill. ; 30 cm.
Mémoire de Master : Medical Physics : Angleterre, University of Surrey : 1986
Annexe f. 50 - 65 . Bibliogr. f. 66 - 68
Langues : Anglais (
eng)
| Mots-clés : |
Scattered photons
Bone density
Ratio
Narrow beam geometry
Transmission photons |
| Index. décimale : |
Ms00486 |
| Résumé : |
Various diagnostic methods used in detrmining bone status are reviewed.
Two methods using scattered photons for determination of bone density have been studied.
The first involved the measurement of the ratio of coherent to Compton scattered photons from ²⁴¹Am using narrow beam geometry with an intrinsic germanium detector.
The second method was based on the measurement of the ratio of coherent to transmission photons from the same experimental configuration used in the previous method.
Solutions of K₂HPO₄ of known densities (1.0 - 1.660 x 10-³ g/mm³) were used to simulate trabecular bones.
In both cases a high correlation between these ratios and bone sample densities was found.
The results also showed that the coherent to transmission ratio gives a higher sensitivity than the coherent to Compton ratio method in the range of scattering angles used (30° - 90°). |
Ms00112 
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