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Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo
Published on: October 2, 2021
Combined optical and single photon emission imaging: preliminary results
Physics in Medicine and Biology
|November 19, 2009
Summary
This study shows that a standard optical imager can detect radioactive tracers without hardware changes. The modified system achieves high resolution, enabling simultaneous optical and nuclear imaging in a single instrument.
Area of Science:
- In vivo imaging
- Medical physics
- Biomedical engineering
Background:
- Optical imaging systems typically detect fluorescence or bioluminescence.
- A novel instrument was developed for radioisotopic detection using X-ray conversion.
- This work investigates adapting an optical imager for radioactive tracer detection.
Discussion:
- The Xenogen IVIS 200 optical imager was utilized without hardware modification.
- Scintillator crystals and a collimator were employed for high-energy ray conversion.
- The system successfully detected technetium 99 metastable methyl diphosphonate (Tc99m-MDP) in vivo.
Key Insights:
- The adapted optical imager achieved a system resolution better than 1.3 mm for source depths <10 mm.
- Image resolution with radioactive tracers is comparable to dedicated nuclear imaging techniques.
- The instrument allows for simultaneous detection of optical and nuclear tracers, enabling bimodal imaging.
Outlook:
- Further characterization of system resolution at various depths is warranted.
- This approach offers a cost-effective solution for multimodal in vivo imaging.
- Potential for broader applications in preclinical research and diagnostics.
