摘要:
An apparatus (1) for reading out X-ray information of an X-ray image stored in a storage phosphor layer (4) is pivotable and includes acquiring unit (24) for acquiring an orientation of the apparatus (1). In this way, in a technically simple way, good image quality of an X-ray image read out can be guaranteed. Furthermore, the invention relates to a radiography module with this type of apparatus (1).
摘要:
A device can read out X-ray information stored in a phosphor layer with an irradiation device for irradiating the phosphor layer with stimulation light which can stimulate the phosphor layer into emitting emission light, and a detector for collecting emission light coming from the phosphor layer and for converting the emission light collected into an analogue detector signal S. In order to increase reliability and resolution when digitising the detector signal, at least two analogue to digital converters are provided which can be operated in different conversion ranges and so can convert the analogue detector signal S into different digital part signal values. Moreover, an analysis device is provided for establishing a digital detector signal value D from the digital part signal values.
摘要:
An apparatus and a corresponding method for reading out a storage phosphor plate (2) with an insertion device for inserting a cassette (1) in which a movably disposed support (3) is located, on top of which the storage phosphor plate (2) lies, a read-out device (20) for reading out the storage phosphor plate (2) and a conveyance device (11, 12) which takes the storage phosphor plate (2) from the support (3) and conveys it in a first direction (R) to the read-out device (20). In order to achieve the most precise and reliable alignment possible of the storage phosphor plate (2) relative to the read-out device (20) in a simple way, a positioning device (13) is provided for shifting the support (3), on which the storage phosphor plate (2) lies, in a second direction (A) which is different from the first direction (R) so that the support (3) and the storage phosphor plate (2) are aligned relative to the read-out device (20).
摘要:
An apparatus and associated method for reading out X-ray information of an X-ray picture stored in a phosphor layer includes: an irradiation device for irradiating the phosphor layer with a stimulating light beam to be moved along a line over the phosphor layer, and in so doing stimulating the phosphor layer into emitting emission light; a detector for collecting the emission light emitted from the storage phosphor layer and for converting the emission light collected into a detector signal S; a processing unit for deducing picture signal values B for pixels of the picture along the line from the detector signal S; and two or more sensors located at different reference positions to collect reference times when the light beam is located at the different reference positions. The processing unit deduces a number of detector signal values D from the detector signal S to deduce the picture signal values B between the two reference times.
摘要:
A system and corresponding method for reading out X-ray information stored in a phosphor layer, includes a read-out device for reading out the X-ray information stored in the phosphor layer, and an input unit integrated in to the read-out device for entering additional information by an operator where the input unit is in the form of a graphical input unit into which the additional information can be entered in graphical form by the operator. Moreover, an allocation device is provided for allocating the entered additional information in graphical form to the X-ray information read out.
摘要:
A device and a method for reading out information stored in a storage layer (15), and an X-ray cassette are proposed which make use for the purpose of erasing information stored in the storage layer (15) of an erasing means (11, 12, 14) which generates an erasure radiation (17). This erasure radiation (17) can have both a first and a second intensity, the first intensity being larger than the second intensity.
摘要:
The invention relates to a method of reading out information items stored in a phosphor layer, in which the phosphor layer is excited to emit emission light and the emission light is sensed by a detector and the detector is moved relative to the phosphor layer. During this process, the detector consecutively senses the emission light emitted in each case by individual regions of the phosphor layer. To reduce the dark noise and the movement blur, provision is made that the detector senses the emission light emitted by a region during an integration time that is less than a forward-travel time for the movement of the detector by the width of the region in the forward-travel direction (V).
摘要:
Apparatus for reading out X-ray information stored in a stimulatable phosphor layer, includes: a plurality of light sources used to emit stimulation light which can stimulate the phosphor layer to emit emission light; a detector used to collect emission light emitted from the phosphor layer; and a control unit for controlling an intensity of the light sources by using a control parameter determined from a reference light source in a regulation unit. The highest possible level of homogeneity and constancy of the light sources will be achieved.
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:
Device for detecting information which is contained in a phosphor layer, with a light source for emitting stimulation light incident upon the phosphor layer along a stimulation line is suitable for stimulating emission light in the phosphor layer, and a detector for detecting the emission light which is stimulated in the phosphor layer. To ensure the highest possible quality of the detected image, an elongated concave mirror is provided, for focusing the stimulation light emitted by the light source onto the phosphor layer. The light source is projected onto the phosphor layer at a scale of 1:M, where M takes a value between 0.5 and 2.