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Updated: Dec 31, 2025

Coherent anti-Stokes Raman Scattering CARS Microscopy Visualizes Pharmaceutical Tablets During Dissolution
Published on: July 4, 2014
A novel micro-photogrammetric instrument for visualizing in 3D small objects applied to the quantitative study of the
Alessandra D'Angelo1, Mike Reading2, Milan Antonijevic1
1Faculty of Engineering and Science, University of Greenwich, Chatham Maritime ME4 4TB, United Kingdom.
Abstract:
The work presented here proposes an innovative approach to 3D chemical mapping of solid formulations by microphotogrammetry. We present details of a novel microphotogrammetry apparatus and the first results for the application of photogrammetry to the dissolution analysis of solid pharmaceutical dosage forms. Unlike other forms of optical imaging, microphotogrammetry allows a true 3D model to be constructed that includes direct observation of the sides of the sample rather than only top-down topographic imaging. Volume and structural changes are assessed quantitatively and related to chemical analysis by high performance liquid chromatography. The recently introduced method of chemical identification by dissolution analysis, or chemical imaging by dissolution analysis, is employed for the first time to obtain tomographic images of the dissolution process.
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