Radiation image detector and phase contrast radiation...

Details Radiation image detector and phase contrast radiation... Radiation image detector and phase contrast radiation...

2008-10-31

2010-06-29

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

C250S370110

Reexamination Certificate

active

07746981

ABSTRACT:
A phase contrast radiation imaging apparatus is includes a radiation source, a diffraction grating, and a radiation image detector. The radiation image detector is equipped with a charge generating layer that generates electric charges when irradiated with radiation, and charge collecting electrodes that collect the electric charges. The charge collecting electrodes are linear electrode groups, constituted by linear electrodes which are arranged at a constant period and are electrically connected to each other, provided to have different phases from each other. Thereby, use of a conventional amplitude diffraction grating is obviated.

REFERENCES:
patent: 5812629 (1998-09-01), Clauser
patent: 7180979 (2007-02-01), Momose
patent: 2006-259264 (2006-09-01), None
patent: 2007-203063 (2007-08-01), None
Franz Pfeiffer, et al., “Phase retrieval and differential phase-contrast imaging with low-brilliance X-ray sources”, Nature Physics Letters, Mar. 2006, pp. 258-261, vol. 2, No. 1.
L. M. Chen, et al., “Phase-contrast x-ray imaging with intense Ar Kα radiation from femtosecond-laser-driven gas target”, Applied Physics Letters, May 2007, vol. 90, No. 211501 (pp. 211501-211503).

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