Method for reading out information stored in a phosphor layer

Details Method for reading out information stored in a phosphor layer Method for reading out information stored in a phosphor layer

2005-07-21

2009-06-09

Porta, David P (Department: 2884)

Radiant energy

Source with recording detector

Using a stimulable phosphor

C250S584000

Reexamination Certificate

active

07544962

ABSTRACT:
In a method for reading out information stored in a phosphor layer whereby the phosphor layer is stimulated into emitting emission light by stimulation light produced from a light source, the emission light emitted from one or several areas of the phosphor layer is collected by a detector moved relative to the phosphor layer, and then converted into corresponding emission light signals. In order to improve the signal
oise ratio, the light source is momentarily switched off at least once during the movement of the detector relative to the phosphor layer. When the light source is switched off, a background, which is caused by the ambient light and/or dark currents in the detector, is collected by the detector and converted into a corresponding background signal. The background signal is then used for correcting the emission light signals.

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