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Fast X-ray luminescence computed tomography imaging.

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    This study introduces a fast 3-D X-ray luminescence computed tomography (XLCT) method using a single-view reconstruction technique. This approach significantly reduces scan times for molecular imaging, enabling dynamic studies of nanophosphor distribution in biological objects.

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    Area of Science:

    • Medical Imaging
    • Biophysics
    • Materials Science

    Background:

    • X-ray luminescence computed tomography (XLCT) offers advanced molecular imaging capabilities using X-rays.
    • Dynamic XLCT faces challenges in balancing scan time, spatial resolution, and field of view.

    Purpose of the Study:

    • To develop and evaluate a fast 3-D XLCT imaging method using single-view reconstruction.
    • To assess the performance of this method for dynamic imaging applications.

    Main Methods:

    • Implemented a single-view XLCT reconstruction method based on compressive sensing (CS).
    • Utilized a cone beam XLCT imaging system for phantom experiments.
    • Evaluated reconstruction accuracy and whole-body imaging performance with X-ray-excitable nanophosphors (Gd2O3:Eu3+).

    Main Results:

    • Successfully resolved nanophosphor-filled tubes in single-view XLCT reconstructions.
    • Achieved a location error of less than 1.2 mm.
    • Reduced acquisition time to approximately 1 frame/s, enabling dynamic imaging.

    Conclusions:

    • The single-view CS-based XLCT method enables fast 3-D imaging.
    • This technique is suitable for dynamic imaging of X-ray-excitable nanophosphors in biological systems.
    • Overcomes limitations of previous XLCT systems regarding acquisition speed.