Simultaneous shape and deformation measurements in a blood vessel model by two wavelength interferometry

Nieves Andrés; Cristina Pinto; Julia Lobera; Virginia Palero; M. Pilar Arroyo

doi:10.1117/12.2270297

26 June 2017 Simultaneous shape and deformation measurements in a blood vessel model by two wavelength interferometry

Nieves Andrés, Cristina Pinto, Julia Lobera, Virginia Palero, M. Pilar Arroyo

Proceedings Volume 10333, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials III; 103330I (2017) https://doi.org/10.1117/12.2270297
Event: SPIE Optical Metrology, 2017, Munich, Germany

Abstract

Holographic techniques have been used to measure the shape and the radial deformation of a blood vessel model and a real sheep aorta. Measurements are obtained from several holograms recorded for different object states. For each object state, two holograms with two different wavelengths are multiplexed in the same digital recording. Thus both holograms are simultaneously recorded but the information from each of them is separately obtained. The shape analysis gives a wrapped phase map whose fringes are related to a synthetic wavelength. After a filtering and unwrapping process, the 3D shape can be obtained. The shape data for each line are fitted to a circumference in order to determine the local vessel radius and center. The deformation analysis also results in a wrapped phase map, but the fringes are related to the laser wavelength used in the corresponding hologram. After the filtering and unwrapping process, a 2D map of the deformation in an out-of-plane direction is reconstructed. The radial deformation is then calculated by using the shape information.

Citation Download Citation

Nieves Andrés, Cristina Pinto, Julia Lobera, Virginia Palero, and M. Pilar Arroyo "Simultaneous shape and deformation measurements in a blood vessel model by two wavelength interferometry", Proc. SPIE 10333, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials III, 103330I (26 June 2017); https://doi.org/10.1117/12.2270297

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