X-ray light valve based digital radiographic imaging systems

Details X-ray light valve based digital radiographic imaging systems X-ray light valve based digital radiographic imaging systems

G - Physics

01

T

G01T 1/16 (2006.01) A61B 6/00 (2006.01) G01N 23/04 (2006.01) G01T 1/24 (2006.01)

Patent

CA 2641779

The present invention provides a digital x-ray radiographic imaging system. The system is based on a photoconductive detector and an electro-optic light modulator, where the photoconductive detector layer absorbs x-rays that have passed through an object to form an exposure of the object. The absorbed x- rays create a static optical image, which is stored in the electro-optic light modulator, allowing the capture of the optical image to continue over longer time. The optical image is digitized using a scanning system and an external light source. The image is then processed and stored by a computer. After the optical image is recorded, an erasing mechanism is used to reset the system before a new exposure is made.

L'invention concerne un système numérique d'imagerie radiographique aux rayons X. Le système comprend un détecteur photoconducteur et un modulateur de lumière électro-optique, le détecteur photoconducteur absorbant les rayons X qui ont traversé un objet pour réaliser une exposition de l'objet. Les rayons X absorbés créent une image optique statique, laquelle est stockée dans le modulateur de lumière électro-optique pour en prolonger la capture. L'image optique est numérisée à l'aide d'un système de balayage et d'une source de lumière externe. L'image est ensuite traitée et mémorisée par un ordinateur. Une fois l'image enregistrée, un mécanisme d'effacement est utilisé pour réinitialiser le système avant de réaliser une nouvelle exposition.

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