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Computed Tomography-guided Time-domain Diffuse Fluorescence Tomography in Small Animals for Localization of Cancer Biomarkers
Published on: July 17, 2012
Quantitative small animal fluorescence tomography using an ultrafast gated image intensifier
Sachin V Patwardhan1, Sharon Bloch, Samuel Achilefu
1Dept. of Radiol., Washington Univ. Sch. of Med., St. Louis, MO 63110, USA. patwardhans@mir.wustl.edu
Summary
Quantitative small animal fluorescence tomography improves imaging accuracy. A new time-resolved, charge-coupled device (CCD) system enables precise whole-body optical imaging by mapping tissue properties and probe distribution.
Area of Science:
- Biomedical optics
- Molecular imaging
- Preclinical research
Background:
- Optical imaging offers sensitive, non-radioactive molecular detection in small animals.
- Quantitative whole-body assays are challenging due to target depth and tissue optical property variations.
- Accurate quantification is crucial for reliable in vivo studies.
Purpose of the Study:
- To develop a quantitative small animal fluorescence tomography system.
- To address limitations in current optical imaging accuracy.
- To enable precise mapping of probe distribution and tissue optical properties.
Main Methods:
- Development of a time-resolved, charge-coupled device (CCD) based fluorescence tomography system.
- Implementation of algorithms to generate in vivo optical property maps.
- Acquisition of whole-body fluorescence data in small animal models.
Main Results:
- Demonstration of a functional quantitative small animal fluorescence tomography system.
- Improved accuracy in determining probe distribution compared to conventional methods.
- Capability to map heterogeneous optical properties within small animals.
Conclusions:
- Time-resolved fluorescence tomography provides a viable strategy for quantitative small animal imaging.
- The developed CCD-based system enhances the quality and accuracy of in vivo optical assays.
- This technology advances preclinical molecular imaging research.
