High-speed X-ray-induced luminescence computed tomography.

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Optical Imaging

Background:

• X-ray-induced luminescence computed tomography (XLCT) is an emerging molecular imaging technique.
• Current XLCT methods face challenges in spatial resolution, scan time, and whole-body field of view for in vivo applications.

Purpose of the Study:

• To develop a novel XLCT technique for rapid 3D imaging from a single snapshot.
• To improve the efficiency and speed of XLCT for practical in vivo molecular imaging.

Main Methods:

• Integration of a custom two-planar-mirror component into a cone beam XLCT system.
• Simultaneous acquisition of multiple optical views using the mirror system.
• Application of a compressive sensing algorithm for 3D XLCT image reconstruction.

Main Results:

• Successful validation of the single snapshot X-ray-induced luminescence computed tomography (SS-XLCT) technique through simulations and experiments.
• Demonstrated significantly faster 3D visualization of nanophosphor targets compared to conventional cone beam XLCT.
• Achieved comparable spatial resolution to conventional XLCT imaging.

Conclusions:

• The developed SS-XLCT technique significantly reduces scan time while maintaining image resolution.
• SS-XLCT shows great potential for accelerating whole-body in vivo molecular imaging in small animals.
• This advancement paves the way for more practical and efficient applications of XLCT.