PHASE-CONTRASTED X-RAY DIAGNOSIS SYSTEM USING CARBON NANOTUBE MICRO-FOCUSING

摘要

A phase-contrasted X-ray diagnosis system using carbon nano tube micro-focusing is provided to increase spatial resolution by reducing focus of an X-ray, by using an X-ray tube based on a carbon nano tube of a concave cathode structure, instead of a filament of X-ray. A triode X-ray tube(101) comprises a carbon nano tube cathode part(105) of a concave structure having a focus of several tens of micrometers, and a gate part inducing electron emission, and an anode part(106) generating X-rays by collision of electrons. An X-ray detector(111) is installed on a propagation path of the X-ray generated from the anode part of the X-ray tube vertically to the propagation direction of the X-ray to be separated from the X-ray tube, and detects the X-ray passing through a sample.