US 2010/0246765 A1 · RADIATION PHASE CONTRAST IMAGING APPARATUS

Abstract

A radiation phase contrast imaging apparatus, including a radiation emission unit having a plurality of electron sources for emitting electron beams, and a target for emitting radiation through collision of electron beam emitted from each electron source, a first grating in which grating structures for diffracting radiation are disposed periodically, a second grating in which grating structures for transmitting and shielding radiation are disposed periodically, and a radiation image detector for detecting radiation transmitted through the second grating, in which the first and second gratings are disposed in an optical axis direction of the radiation so as to be able to substantially superimpose each image of the first grating formed based on radiation corresponding to each electron source on a surface of the second grating, and the radiation corresponding to each electron source forms each phase image of the same subject on the radiation image detector.

Claims18

Dependent claims

A radiation phase contrast imaging apparatus, comprising:

a radiation emission unit having a plurality of electron sources, each for emitting an electron beam, and a target for emitting radiation through collision of the electron beam emitted from each electron source;
a first grating in which grating structures for diffracting radiation emitted from the radiation emission unit are disposed periodically;
a second grating in which grating structures for transmitting and shielding radiation diffracted by the first grating are disposed periodically;
and
a radiation image detector for detecting radiation transmitted through the second grating, wherein:
the first and second gratings are disposed in an optical axis direction of the radiation so as to be able to substantially superimpose each image of the first grating formed based on radiation corresponding to each electron source on a surface of the second grating;
and
the radiation corresponding to each electron source is radiation that forms each phase image of the same subject on the radiation image detector by way of the first and second gratings.

5 more elements

A radiation phase contrast imaging apparatus, comprising:

a radiation emission unit having a plurality of electron sources, each for emitting an electron beam, and a target for emitting radiation through collision of the electron beam emitted from each electron source;
a grating in which grating structures for diffracting radiation emitted from the radiation emission unit are disposed periodically;
and
a periodic information imaging radiation image detector for detecting periodic information of radiation diffracted by the grating, wherein:
the grating and the periodic information imaging radiation image detector are disposed in an optical axis direction of the radiation so as to be able to substantially superimpose each image of the grating formed based on radiation corresponding to each electron source on a surface of the periodic information imaging radiation image detector;
and
the radiation corresponding to each electron source is radiation that forms each phase image of the same subject inside of the periodic information imaging radiation image detector by way of the grating and linear electrodes of the periodic information imaging radiation image detector.

4 more elements

Dependencies are inferred from the claim text.

Radiation phase contrast imaging apparatus

Life of this patent

Radiation phase contrast imaging apparatus

Life of this patent

Abstract

Claims18