Tissue deformation analysis using a laser based digital image correlation technique
| Autor: | Frank Beyrau, Johannes Kerl, Matthew Oldfield, T. Parittotokkaporn, Ferdinando Rodriguez y Baena, L. Frasson |
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| Rok vydání: | 2011 |
| Předmět: |
Digital image correlation
Materials science business.product_category Time Factors 0206 medical engineering Biomedical Engineering 02 engineering and technology Deformation (meteorology) Displacement (vector) 030218 nuclear medicine & medical imaging law.invention Biomaterials 03 medical and health sciences 0302 clinical medicine Planar Optics Dogs law Micrometer Materials Testing Animals Particle Size Digital camera business.industry Lasers Brain Laser 020601 biomedical engineering Sample (graphics) Molecular Imaging Mechanics of Materials Gelatin Stress Mechanical business |
| Zdroj: | Journal of the Mechanical Behavior of Biomedical Materials |
| ISSN: | 1878-0180 |
| Popis: | A laser based technique for planar time-resolved measurements of tissue deformation in transparent biomedical materials with high spatial resolution is developed. The approach is based on monitoring the displacement of micrometer particles previously embedded into a semi-transparent sample as it is deformed by some form of external loading. The particles are illuminated in a plane inside the tissue material by a thin laser light sheet, and the pattern is continuously recorded by a digital camera. Image analysis yields the locally and temporally resolved sample deformation in the measurement plane without the need for any in situ measurement hardware. The applicability of the method for determination of tissue deformation and material strain during the insertion of a needle probe into a soft material sample is demonstrated by means of an in vitro trial on gelatin. |
| Databáze: | OpenAIRE |
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