Seminars Archive
Atsushi Momose
Abstract
Wednesday, August 30, 2000, 14:30
Seminar Room, ground floor, Building "T"
Sincrotrone Trieste, Basovizza
I.D. required for external visitors
Development of large X-ray interferometers for phase-contrast X-ray imaging.
Atsushi Momose
(Department of Applied Physics, University of Tokyo, Japan)
ABSTRACT
X-ray phase has been used recently to generate contrast in X-ray transmission
imaging. The motivation for studying phase-contrast X-ray imaging is to
visualize structures in materials which are almost transparent to hard
X-rays and poorly depicted using conventional methods that depend on absorption
contrast. We are investigating possible medical applications of phase-contrast
X-ray imaging using an X-ray interferometer.
The main subject is to broaden the observation area to enable in vivo
observation. For this purpose, large X-ray interferometers are developed,
and 2.5 cm ~
2.0 cm interference patterns are currently generated using synchrotron
X-rays at the Photon Factory, Japan. In parallel with the instrumental
developments, various soft tissues are observed by using X-ray interferometers
to find correspondence between the generated contrast and our histological
knowledge in collaboration with medical doctors. The observation done so
far suggests that cancerous tissues are differentiated from normal tissues
and that blood can produce phase contrast. I will introduce the status
of the project.
