Radiation image read-out apparatus

Details Radiation image read-out apparatus Radiation image read-out apparatus

1989-02-17

1990-09-25

Fields, Carolyn E.

Radiant energy

Automatic/serial detection of similar sources

250207, G01N 2304

Patent

active

049595458

ABSTRACT:
A radiation image read-out apparatus comprises a system for scanning a stimulable phosphor sheet, on which a radiation image has been stored, with stimulating rays in a main scanning direction, i.e. along a main scanning line, and a system for moving the stimulable phosphor sheet with respect to the stimulating rays in a direction approximately normal to the main scanning direction. An elongated photomultiplier having a light receiving face, which extends along the main scanning line on the stimulable phosphor sheet, is provided for detecting light emitted by the stimulable phosphor sheet during scanning. The elongated photomultiplier has a cylindrical main body, a photocathode provided on an inner surface of the main body, and a light guide member which extends along the light receiving face and guides the emitted light toward the photocathode. The light guide member is positioned so that a line, which passes through points at the centers of an inner edge face and an outer edge face of the light guide member, forms an acute angle at its intersection with the photocathode.

REFERENCES:
patent: 2172324 (1939-09-01), Schert
patent: 2231698 (1941-02-01), Zworykin et al.
patent: 2758217 (1956-08-01), Scherbatskoy
patent: 3036234 (1962-05-01), Dacey
patent: 3089959 (1963-05-01), Chatten
patent: 3983437 (1976-09-01), Benson et al.
patent: 4733307 (1988-03-01), Watanabe

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