摘要:
A radiation image recording and read-out apparatus comprises a read-out (20) and erasing unit (31) provided with an image read-out device for irradiating stimulating rays to an image-recorded stimulable phosphor sheet (2) and detecting light emitted by the stimulable phosphor sheet upon exposure to stimulating rays, and a device for erasing radiation energy remaining on the stimulable phosphor sheet. The read-out and erasing unit is reciprocated normal to the direction of irradiation of stimulating rays for carrying out image read-out during forward movement, and carrying out erasing by the erasing device during backward movement. The read-out and erasing unit may be provided with two erasing devices on either side of the image read-out device for carrying out image read-out by the image read-out device and erasing by the erasing device positioned on the upstream side of the image read-out device during forward movement, and carrying out image read-out by the image read-out device and erasing by the other erasing device positioned on the upstream side of the image read-out device during backward movement.
摘要:
A radiation image read-out apparatus is constituted for exposing a recording material provided with a stimulable phosphor and carrying a radiation image stored thereon to stimulating rays which cause the recording material to emit light in proportion to the stored radiation energy, and photoelectrically detecting the emitted light by a photodetector to read out the radiation image. The photodetector is disposed on the side opposite to the stimulating . ray irradiation side with respect to the recording material. A multi-layer optical filter substantially reflecting stimulating rays and substantially transmitting the light emitted by the recording material is disposed between the recording material and the photodetector.
摘要:
radition image recording and read-out apparatus comprises an image recording section (10) for recording a radiation image of an object (1) on a stimulable phosphor sheet (2), a read-out section (20) for scanning the stimulable phosphor sheet with stimulating rays and for detecting the light emitted therefrom upon stimulation, and an erasing section (40) for releasing the radiation energy remaining in the stimulable phosphor sheet. The stimulable phosphor sheets are circulated through these sections by conveyor belts and reused for image recording. A shutter (8A, 8B) is positioned between the read-out section and the erasing section to prevent the erasing light from entering the read-out section at least when read-out is conducted in the read-out section.
摘要:
In a radiation image recording and read-out system in which a stimulable phosphor sheet (4) is repeatedly used for recording radiation images and noise due to residual radiation energy on the phosphor sheet (4) is eliminated by exposing the phosphor sheet (4) to erasing light (11) prior to the recording of a radiation image thereon, the level of residual radiation energy is determined and the amount of exposure of the phosphor sheet (4) to the erasing light (11) is controlled according to the determined level of residual radiation energy. The exposure amount is controlled to erase residual radiation energy to a level within the range between 0.01 and 0.0001 with the maximum of the originally stored radiation energy taken as 100.
摘要:
Ein kombiniertes Gerät (10) zum Auslesen und Löschen von Speicherfolien (30) umfasst eine stromab einer Leseeinheit (12) unter geringem Abstand hiervon angeordnete Löscheinheit (14), die über eine Lichtsperre (46) von der Leseeinheit (12) getrennt ist.
摘要:
Methods and apparatus are described for retrieving information from a storage medium (102). A first portion of the surface of the storage medium is exposed to stimulating light (108) which diffuses in the storage medium under a second portion of the surface adjacent the first portion. The second portion of the surface is shielded from exposure to the stimulating light. Stimulated light corresponding to the information is received with at least one detector (114) positioned to receive the stimulated light via the second portion of the surface of the storage medium. The stimulated light is released from the storage medium in response to the stimulating light diffused under the second portion of the surface.
摘要:
Die Erfindung betrifft eine Vorrichtung (1) zum Löschen einer Speicherleuchtstoffschicht (2). Die Vorrichtung (1) enthält eine Strahlungsquelle (8) zum Erzeugen und Aussenden einer Löschstrahlung, einem Antrieb (5) zum Erzeugen einer Relativbewegung zwischen der Speicherleuchtstoffschicht (2) und der Strahlungsquelle (8), wobei die Speicherleuchtstoffschicht (2) in einer Aufnahmeebene (7) liegt bzw. bewegt wird, und einen Reflektor (11) zum Reflektieren von Strahlung. Erfindungsgemäß ist der Reflektor (11) zum Reflektieren von von der Speicherleuchtstoffschicht (2) reflektierter Löschstrahlung in Richtung der Speicherleuchtstoffschicht (2) angeordnet und ausgestaltet. Es ist eine weitere reflektierende Fläche (31) zum Reflektieren von Löschstrahlung vorhanden, die dem Reflektor (11), in eine Richtung senkrecht zur Richtung (6) der Relativbewegung betrachtet, gegenüberliegt. Die Erfindung betrifft ferner ein System mit einer solchen Vorrichtung (1) und einer Speicherleuchtstoffschicht (2).
摘要:
The invention relates to a device and a method for reading out information stored in a storage layer (15) and to an X-ray cartridge. Said device and method use a deleting means (11, 12, 14) that produces a deleting ray (17) for deleting information that is stored in the storage layer (15). This deleting ray (17) can have a first and a second intensity, the first intensity being greater than the second intensity.