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Updated: May 3, 2026
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Coherent anti-Stokes Raman Scattering CARS Microscopy Visualizes Pharmaceutical Tablets During Dissolution
Published on: July 4, 2014
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Tablet disintegration studied by high-resolution real-time magnetic resonance imaging
Journal of Pharmaceutical Sciences
|January 30, 2014
Summary
High-resolution real-time magnetic resonance imaging (MRI) reveals how tablet disintegrants work. Crospovidone uses a shape memory effect, while others swell, impacting drug delivery.
Area of Science:
- Pharmaceutical Sciences
- Biomedical Engineering
- Materials Science
Background:
- Tablet disintegration is crucial for drug efficacy.
- Understanding disintegrant mechanisms is key for formulation development.
- Advanced imaging techniques can provide novel insights into disintegration.
Purpose of the Study:
- To investigate tablet disintegration mechanisms using real-time MRI.
- To examine the influence of disintegrant type, tablet density, and concentration.
- To assess the capabilities of high-resolution MRI for pharmaceutical analysis.
Main Methods:
- Employed high-resolution real-time magnetic resonance imaging (MRI) with 75 ms temporal and 80 × 80 µm spatial resolution.
- Analyzed MRI video data quantitatively using MATLAB.
- Investigated six commercial disintegrants, varying tablet density and disintegrant concentration.
Main Results:
- Identified crospovidone as the only disintegrant acting via a shape memory effect; others primarily swell.
- Observed that higher relative tablet density with croscarmellose sodium improved water distribution but not disintegration kinetics.
- Found that increased polacrilin potassium concentration accelerated and improved tablet disintegration.
Conclusions:
- Real-time MRI is a powerful tool for visualizing and studying tablet disintegration.
- Disintegrant mechanisms vary, with swelling and shape memory effects being prominent.
- Tablet formulation parameters like density and disintegrant concentration significantly influence disintegration dynamics.
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