Method and apparatus for recording and reading out radiation ima

Details Method and apparatus for recording and reading out radiation ima Method and apparatus for recording and reading out radiation ima

1990-03-27

1991-05-07

Westin, Edward P.

Radiant energy

Automatic/serial detection of similar sources

2504841, 2523014H, G01N 2304, C09K 1186

Patent

active

050139169

ABSTRACT:
A recording material is exposed to radiation carrying image information in order to store a radiation image thereon. The recording material is provided with a stimulable phosphor layer constituted of a cerium activated lanthanum oxyhalide phoshor which is represented by the general formula LaOX:xCe, where X is at least one halogen selected from the group consisting of Cl, Br, and I, and x is a number satisfying the condition 0<x.ltoreq.0.2, and in which the atomic ratio X/La satisfies the condition 0.50<X/La.ltoreq.0.998. After a radiation image has been recorded on it, the recording material is exposed to stimulating rays, which cause it to emit light in proportion to the amount of energy stored thereon during its exposure to radiation, and the emitted light is photoelectrically detected in order to obtain an image signal. The recording material is then subjected to primary and secondary erasing operations in order to release any energy still stored thereon.

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