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Determination of bone density using photon scattering methods / Tewfik Baba Hamed 

Public ISBD Titre : Determination of bone density using photon scattering methods Type de document : texte imprimé Auteurs : Tewfik Baba Hamed, Auteur ; Nicholas M. Spyrou, Directeur de thèse Editeur : University of Surrey Année de publication : 1986 Importance : 48 f. Présentation : ill. Format : 30 cm. Note générale : 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°). Determination of bone density using photon scattering methods [texte imprimé] / Tewfik Baba Hamed, Auteur ; Nicholas M. Spyrou, Directeur de thèse . - [S.l.] : 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°).

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
Ms00486	Ms00486	Papier	Bibliothèque centrale	Mémoire de Master	Disponible

Documents numériques

BABA-HAMED.Tewfik.pdf URL