Quantitative phase retrieval in X-ray Zernike phase contrast microscopy.

Area of Science:

• Physics
• Imaging Science
• Microscopy

Background:

• X-ray phase contrast imaging offers high-contrast visualization by detecting phase variations.
• Zernike phase contrast microscopy is a popular technique for high-resolution sample structure investigation.
• Current X-ray Zernike phase contrast microscopy yields qualitative data due to mixed absorption and phase contrast, complicating image interpretation.

Purpose of the Study:

• To develop a quantitative phase retrieval method for X-ray Zernike phase contrast microscopy.
• To enable accurate interpretation of images obtained through X-ray Zernike phase contrast microscopy.
• To enhance the application of X-ray phase contrast imaging in scientific research.

Main Methods:

• Proposed an approach for quantitative phase retrieval in X-ray Zernike phase contrast microscopy.
• Measured two successive images of an object with phase shifts of π/2 and 3π/2.
• Developed a method for quantitative phase retrieval through image combination.

Main Results:

• Successfully demonstrated quantitative phase retrieval from X-ray Zernike phase contrast images.
• Numerical experiments confirmed the feasibility of the proposed phase retrieval method.
• The method allows for precise extraction of phase information from the object.

Conclusions:

• The developed method enables quantitative phase retrieval in X-ray Zernike phase contrast microscopy.
• This technique overcomes the limitations of qualitative imaging, facilitating easier image interpretation.
• The approach is expected to have broad applications in biology, materials science, and other fields.