摘要:
The invention relates to a device (10,60) for reading out information stored in a phosphor carrier (15) and to an X-ray cassette (70) which contains the phosphor carrier (15) and such a device. The inventive device (10,60) has a radiation source (11;20, . . . ,29,30 . . . 39; 50,53;61) that can emit a first radiation source (16) with which the phosphor carrier (15) can be exited such that the carrier emits a second radiation (17). This second radiation (17) comprises an image of the information stored in the phosphor carrier (15). The device (10,60) additionally has a receiving means (12,62) which contains a number of point elements (PD1, . . . PDn) in order to receive the second radiation (17) emitted from the phosphor carrier (15) in a point-by-point manner. The second radiation of a point of the phosphor carrier (15) can thus be received by each one of the point elements (PD1, . . . ,PDn).
摘要:
A device (1) and a method for reading information stored in a phosphor layer (10) is disclosed. The device (1) includes a transparent carrier material (9) on which the phosphor layer (10) to be read is disposed. A radiation source (2) emits an excitation radiation (20) to excite the phosphor layer (10), which in turn emits an emission radiation (26). The emission radiation (26) can be received by a receiver (3). The radiation source (2) is arranged on one side of the transparent carrier material (9), whereas the receiver (3) is arranged on the other side of the transparent carrier material (9), thereby defining an optical path between the radiation source (2) and the receiver (3). According to the invention, a reflective layer (21, 22; 30, 31, 32) for reflecting at least a portion of the excitation radiation (20) is arranged in the optical path.
摘要:
An apparatus (1) for erasing a storage phosphor layer (2) includes a radiation source (8) for producing and emitting erasing radiation, a drive (5) for producing a relative movement between the storage phosphor layer (2) and the radiation source (8), the storage phosphor layer (2) lying or being moved in a holding plane (7), and a reflector (11) for reflecting radiation. The reflector (11) is arranged and designed to reflect erasing radiation reflected by the storage phosphor layer (2) in the direction of the storage phosphor layer (2). A further reflecting surface (31) is provided for reflecting erasing radiation which is positioned opposite the reflector (11), as considered in a direction at right angles to the direction (6) of the relative movement.
摘要:
A device for acquiring information that is contained in a phosphor layer which includes a light source (2) for irradiating and exciting the phosphor layer (1) to produce emission light (4) containing the information, a detector (6) for acquiring the emission light (4) produced in the phosphor layer (1) and a filter device (8), which is arranged between the phosphor layer (1) and the detector (6) and/or between the phosphor layer (1) and the light source (2). To increase the reliability in the acquisition of the emission light (4), the filter device (8) includes at least two filter elements structured as absorption filters and joined to each other.
摘要:
The present invention reduces the influences of electromagnetic fields during reading out of image signals from memory phosphor films. This is done by pre-amplifying the detection signals obtained from a detection device, in particular a CCD array, before further processing, for example by an analog-to-digital converter. An amplification register for electron multiplying can be used for the amplification. In this way individual photon sensitivity can be achieved when reading out X-ray images.
摘要:
The present invention reduces the influences of electromagnetic fields during reading out of image signals from memory phosphor films. This is done by pre-amplifying the detection signals obtained from a detection device, in particular a CCD array, before further processing, for example by an analog-to-digital converter. An amplification register for electron multiplying can be used for the amplification. In this way individual photon sensitivity can be achieved when reading out X-ray images.
摘要:
An apparatus (1) for erasing a storage phosphor layer (2) includes a radiation source (8) for producing and emitting erasing radiation, a drive (5) for producing a relative movement between the storage phosphor layer (2) and the radiation source (8), the storage phosphor layer (2) lying or being moved in a holding plane (7), and a reflector (11) for reflecting radiation. The reflector (11) is arranged and designed to reflect erasing radiation reflected by the storage phosphor layer (2) in the direction of the storage phosphor layer (2). A further reflecting surface (31) is provided for reflecting erasing radiation which is positioned opposite the reflector (11), as considered in a direction at right angles to the direction (6) of the relative movement.
摘要:
A device for acquiring information contained in a phosphor layer comprises a light source (2) for irradiating the phosphor layer (1) with excitation light (3) that is suitable for exciting emission light (4) in the phosphor layer (1), a detector (6) for detecting the emission light (4) that has been excited in the phosphor layer (1), and a filter device (8), arranged between the phosphor layer (1) and the detector (6), that is substantially transparent in a first wavelength range (W1) of the emission light (4) and substantially non-transparent in a second wavelength range (W2) of the excitation light (3). To increase the reliability during the acquisition of the emission light, the filter device (8) is made substantially non-transparent in at least a third wavelength range (W3) having longer wavelengths than the second wavelength range (W2) of the excitation light (3).
摘要:
An imaging system is disclosed that includes an illumination source, a modulator and a variable Fourier diaphragm. The illumination source produces a first illumination field having a first frequency and a second illumination field having a second frequency. The modulator receives the first illumination field and the second illumination field, and produces a first modulated illumination field and a second modulated illumination fields. The variable Fourier diaphragm selectively passes one of the first modulated illumination field and the second modulated illumination field.
摘要:
An apparatus (1) for erasing a storage phosphor layer (2) with a holding plane (7) in which the storage phosphor layer (2) lies or can be moved, a radiation source (8, 9, 10) for irradiating the storage phosphor layer (2) with erasing radiation which is suitable for erasing the storage phosphor layer (2), and a reflector (11; 29, 30) for reflecting erasing radiation in the direction of the holding plane (7). In order to increase the erasing efficiency, provision is made such that the reflector (11; 29, 30) is arranged and/or designed such that it reflects erasing radiation, which is reflected by the storage phosphor layer (2), in the direction of the storage phosphor layer (2), and the radiation source (8, 9, 10) is disposed on a base (33; 48, 49), the base (33; 48, 49) being disposed closer to the holding plane (7) than at least part of the reflector (11; 29, 30).