Radiation image-reading method

Details Radiation image-reading method Radiation image-reading method

1989-02-10

1990-05-01

Hannaher, Constantine

Radiant energy

Automatic/serial detection of similar sources

G03B 4200

Patent

active

049221019

ABSTRACT:
A new method of photoelectrically reading out a radiation image of one or more spots which is stored and recorded on a stimulable phosphor sheet, to determine position of the spot on the phosphor sheet, comprises the steps of: scanning the stimulable phosphor sheet under rotation twice with stimulating rays giving a linear irradiation area on a surface of the phosphor sheet to form in total an irradiated area in the form of a ring; detecting stimulated emissions caused by a series of the irradiations of stimulating rays separately for each scanning, for obtaining information as to whether the spot is present or absent on the irradiated linear area; and locating the position of the spot on the phosphor sheet by combining the information of the spot obtained in the twice scanning.

REFERENCES:
patent: 4631407 (1986-12-01), Kawajiri et al.
patent: 4692813 (1987-09-01), Conrad et al.
patent: 4767927 (1988-08-01), Ohyama et al.
patent: 4823007 (1989-04-01), Hanson
patent: 4857733 (1989-08-01), Saotome et al.

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