Radiation image reading system

Details Radiation image reading system Radiation image reading system

2008-07-08

2008-07-08

Porta, David P. (Department: 2884)

Radiant energy

Source with recording detector

Using a stimulable phosphor

C250S584000

Reexamination Certificate

active

07397059

ABSTRACT:
The present invention is directed to a radiation image reading system. The system includes a radiation source for irradiating a radiation toward a subject. The radiation source has a size “D”. A radiation detector in which large number of detecting devices for detecting the radiation transmitted through the subject are arranged in an array form, for generating an image signal of the subject by detecting the radiation transmitted through the subject by each of the detecting devices. An aperture of each of the detecting devices has a size “A”. Also included is a sampling section for sampling the image signal. The size A of the aperture fulfills a condition of B≦A≦2B. B is a size of a penumbra on the radiation detector. The size B of the penumbra is represented by B=Dx (R2/R1), where R1 is a distance from the radiation source to the subject and R2 is a distance from the subject to the radiation detector.

REFERENCES:
patent: 5841833 (1998-11-01), Mazess et al.
patent: 6507025 (2003-01-01), Verbinski et al.
patent: 2003/0085352 (2003-05-01), Lezec et al.
patent: 2005/0220265 (2005-10-01), Besson

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