GOP-29: The influence of scanner type and acquisition parameters on bone length measurements in computed tomography

Détails

ID Serval
serval:BIB_9A7586BC998F
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Sous-type
Abstract (résumé de présentation): article court qui reprend les éléments essentiels présentés à l'occasion d'une conférence scientifique dans un poster ou lors d'une intervention orale.
Collection
Publications
Titre
GOP-29: The influence of scanner type and acquisition parameters on bone length measurements in computed tomography
Titre de la conférence
IALM intersocietal symposium
Auteur(s)
Uldin T., Baumann P., Dominguez A., Grabherr S., Mangin P., Grimm J.
Adresse
Venise, Italie, 21-24 juin 2016
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Langue
anglais
Résumé
Background and Aims. The purpose of this study was to examine the influence of the scanner type, reconstructed slice thickness and subjective image quality on precision of bone length measurements in multi-detector computed tomography (MDCT).
Materials and Methods. Twenty dry long bones were scanned on two MDCT units, GE LightSpeed Ultra, 8 detector rows and GE LightSpeed VCT, 64 detector rows using reconstructed slice thickness of 0.625 and 1.25 mm. Four observers evaluated the subjective image quality and maximum bone length. Conventional caliper bone length measurements served as ground truth.
Results and Conclusions. Measurements on the 64-row scanner were more precise than on the 8-row scanner. However, slice thickness did not seem to have any effect on the precision of measurements. Nevertheless, differences are small and may be correlated to minimal physical detector resolution in the Z-axis. Subjective image quality was best at the 64-row scanner with 0.625 mm reconstructed slice thickness (full-isotropy) and worst at the 64-row scanner with 1.25 mm (anisotropy). The depiction of small structures such as trabecular bone was best at isotropic voxel size. Subjective image quality had no influence on bone length measurement precision.
Mots-clé
Forensic radiology, forensic anthropology, osteometry, dry bone
Création de la notice
13/07/2016 11:53
Dernière modification de la notice
20/08/2019 15:01
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