An Integrated X-Ray/Optical Tomography System for Pre-clinical Radiation Research

Area of Science:

• Preclinical Radiation Oncology
• Biomedical Imaging
• Small Animal Models

Background:

• Current Small Animal Radiation Research Platforms (SARRP) lack precision for soft tissue target localization.
• Accurate localization of soft tissue targets, such as tumors, is crucial for effective preclinical radiation studies.

Purpose of the Study:

• To develop an imaging system that complements X-ray CT for precise soft tissue target localization.
• To achieve sub-millimeter accuracy in determining the Center of Mass (CoM) of soft tissue targets.
• To enhance preclinical radiation research capabilities with high-resolution imaging guidance.

Main Methods:

• Integration of X-ray imaging with bioluminescence imaging and tomography (BLI/BLT).
• Development of a system with robotic rotating stages and a variable focal spot X-ray source.
• Utilizing a high-performance CCD camera with a multi-wavelength filter assembly for BL tomography and a novel three-mirror arrangement for multi-angle imaging.

Main Results:

• The developed system provides high-resolution imaging for preclinical irradiation.
• It enables precise localization of soft tissue targets, overcoming limitations of existing CT-based methods.
• The system can be used as a standalone unit or docked onto existing SARRP systems.

Conclusions:

• The integrated X-ray/BLI/BLT system offers a significant advancement for preclinical radiation research.
• It enables accurate targeting of soft tissue in small animal models, improving study reliability.
• This technology supports advanced research into radiation effects on tumors and normal tissues.