Digital X-ray image read apparatus with a correction function

Details Digital X-ray image read apparatus with a correction function Digital X-ray image read apparatus with a correction function

1990-10-02

1992-01-21

Howell, Janice A.

Radiant energy

Automatic/serial detection of similar sources

2504841, G01N 2304

Patent

active

050830244

ABSTRACT:
A digital X-ray image read apparatus having a correction function. The apparatus includes an excitation beam generation source for irradiating the excitation beam onto a photostimulable phosphor plate to generate a fluorescent light. A collection unit collects the fluorescent light of the photostimulable phosphor plate after excitation and a photomultiplier unit, connected to the collection unit, converts the fluorescent light to an analog electrical signal after multiplication. An analog-to-digital converter, connected to the photomultiplier unit, converts the analog electrical signal to a digital X-ray image signal. A correction unit, connected to the analog-to-digital converter, corrects the digital X-ray image based on a predetermined formula obtained from an amount of the fluorescent light and an afterglow thereof. An image memory connected to the correction unit, stores the X-ray image after correction.

REFERENCES:
patent: 4527061 (1985-07-01), Horikawa et al.
patent: 4636641 (1987-01-01), Mori et al.
patent: 4861994 (1989-08-01), Saotome et al.
patent: 4916316 (1990-04-01), Umemoto et al.

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