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3D local measurements of bone strain and displacement: comparison of three digital volume correlation approaches

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This study aimed to compare accuracy and precision errors of three Digital Volume Correlation (DVC) approaches in a particular 3D zero-strain condition for both trabecular and cortical bone specimens, imaged repeatedly using micro-CT. Both scalar average errors and errors affecting the individual components of displacements and strains were calculated. For each DVC approach, errors decreased asymptotically for larger sub-volume sizes in the range explored. Considering this particular set of images, the global approach (ShIRT-FE) showed an overall better accuracy and precision than the local ones (DaVis). The latter show reasonable results for large nodal spacing, particularly for trabecular bone.
Original languageEnglish
Article number071006
Number of pages14
JournalJournal of Biomechanical Engineering
Issue number7
Early online date2 Jun 2015
Publication statusPublished - Jul 2015

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