Laser speckle photography to measure surface displacements on cortical bone--verification of an automated analysis system.
Med Eng Phys
; 20(8): 594-601, 1998 Nov.
Article
em En
| MEDLINE
| ID: mdl-9888238
ABSTRACT
A non-contact strain measurement method that could be used in a physiological environment was adapted to determine accurately the mechanical properties of bone. The technique of laser speckle photography was applied to record in-plane surface displacements. An automated image analysis system, based on a Fast Fourier Transform algorithm, was developed for data acquisition and its accuracy and precision verified. It was established that the technique could be used at magnifications of up to 60x , providing an ultimate resolution of approximately 1 microm. Displacement measurements on cortical bone submerged in water were demonstrated, which is of great value in determining the true physiological properties of bone.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Osso e Ossos
/
Fotografação
/
Lasers
Limite:
Humans
Idioma:
En
Revista:
Med Eng Phys
Assunto da revista:
BIOFISICA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
Reino Unido