Talk in the seminar room of the ANKA hall:


Since 1990s, X-ray phase imaging methods have been studied for highly sensitive X-ray imaging, which enables us to observe weakly absorbing objects, such as biological soft tissues and polymers. X-ray phase imaging consists of two components of technologies: one is an optical device for generating X-ray phase contrast and the other is a method for measuring the phase shift caused by a sample based on digital imaging. The changes in X-ray phase and amplitude by a sample are measured separately by phase imaging, eliminating the effect due to the imperfection in optical elements. X-ray phase tomography has been realized based on X-ray phase imaging.

X-ray grating interferometry, such as X-ray Talbot interferometry  and X-ray Talbot-Lau interferometry , has been attracting attention as a new device for X-ray phase imaging especially because of its compatibility with laboratory sources, while other X-ray phase imaging have been performed at synchrotron facilities. Therefore, we are motivated to advance towards practical implementation of X-ray grating interferometry for clinical diagnosis and non-destructive testing.

Prof. Momose is conducting a project supported by Japan Science and Technology Agency (JST). He has been developing medical systems for diagnosis of articular rheumatism and breast cancer in collaboration with a medical company. A machine installed in a hospital is now used for clinical study with patients [1]. In addition, the first prototype developed at Momose's laboratory is now provided for the research of non-destructive testing by the people from industry.

Prof. Momose will introduce details of the various developments with grating interferometry in his group including other applications with synchrotron radiation, such as microscopic Talbot interferometry and four-dimensional X-ray phase tomography.

[1] J. Tanaka et al., Z. Med. Phys. to be published.