A single-image retrieval method for edge illumination X-ray phase-contrast imaging: Application and noise analysis

Area of Science:

• Medical Imaging
• Physics
• Materials Science

Background:

• Edge illumination X-ray phase-contrast imaging (EI XPCI) is a developing technique with potential for lab and synchrotron applications.
• Current EI XPCI methods require multiple images from different setups, increasing acquisition time and complexity.

Purpose of the Study:

• To introduce a novel acquisition and processing scheme for EI XPCI.
• To develop a method capable of retrieving X-ray phase maps from a single image, simplifying the procedure.

Main Methods:

• An analytical retrieval method was derived assuming quasi-homogeneous objects.
• The method's noise properties were theoretically analyzed.
• The approach was validated using experimental synchrotron images of a biological sample.

Main Results:

• The method successfully retrieves high-quality images with enhanced area contrast for easier sample geometry interpretation.
• Transformed edge signals into area contrast, improving image interpretability.
• Demonstrated high stability against noise in retrieved images.

Conclusions:

• The developed EI XPCI approach simplifies acquisition, reduces time, and lowers radiation dose.
• This method is expected to become a preferred choice for various EI XPCI applications.
• Future work includes adapting the method for computed tomography and polychromatic X-ray sources.