摘要:
A system has been described for reading out stimulable phosphor screens, plates or panels, whether or not differing from each other in phosphor composition or phosphor layer arrangement, after exposing said screens to X-rays. Said system comprises at least one source of stimulating radiation, an array of transducer elements arranged for detecting light emitted upon stimulation and for converting said light into a signal representation of said image. Said system further comprises filtering means for preventing light, emitted by said source of stimulation light, from being detected by said transducer elements, wherein said filtering means transmits light with a high transmission efficiency for emitted blue light upon stimulation and low transmission for radiation from the stimulating laser source.
摘要:
A gray value model is generated encoding photometric knowledge at landmark positions. This step exploits intensity correlation in neighborhoods sampled around landmark positions. A geometric model is generated encoding geometric knowledge between landmarks. This step exploits spatial correlation between landmarks of segmented anatomic entities.
摘要:
Storage phosphor particles suitable for use in coated layers of stimulable phosphor screens or panels, in favor of high relative sensitivity, advantageously contain at the surface of the phosphor particles and in their inner volume, as components composing the said phosphor, a matrix component and a dopant or activator element that is homogeneously incorporated, wherein preference is given to particles having an aspect ratio of more than 2:1 and less than 50:1, said aspect ratio being defined as a ratio of 2 largest sizes of said particles, said sizes being taken in 3 dimensions perpendicular to each other, provided that one of said 2 largest sizes is smaller than 10 μm.
摘要:
A system has been described for reading out a plurality of stimulable phosphor screens, plates or panels, after exposing said screens to X-rays having an energy in the range from 25 up to 150 kVp, the screens being selected from the group consisting of binder containing powder screens and binderless, crystalline or amorphous phosphor layer screens; wherein said phosphors are divalent europium activated alkali halide type phosphors wherein said halide is at least one of bromide or a combination of bromide with at least one of chloride and iodide, or divalent europium activated alkaline earth metal halide phosphors, wherein said halide is at least one of fluoride, chloride, bromide and iodide or a combination thereof, and wherein said screens are consecutively subjected to following steps of stimulating said phosphor screens by means of stimulation energy; detecting stimulated emission energy, emitted by the phosphor screen upon stimulation; converting detected energy into a signal representation of said radiation image; erasing said phosphor screen by exposing it to erasing energy; wherein differences in maximum wavelength of stimulation spectra of said differing screens are in the range from 10 nm up to 100 nm, wherein differences in maximum wavelength of stimulated emission spectra of said differing screens are in the range from 10 nm up to 150 nm, and wherein filtering means are provided for preventing stimulation radiation from being detected by detecting means, and for transmitting radiation emitted upon stimulation.
摘要:
A black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, a binder and optionally photosensitive silver halide, characterized in that the thermosensitive element further contains deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of the at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1; and the use for the purpose of increasing the ratio of Dmax to the quantity of said substantially light-insensitive organic silver salts per unit area of the above-mentioned thermographic recording material.
摘要翻译:包含热敏元件和载体的黑色和白色温度记录材料,所述热敏元件含有至少一种基本上不受光敏的有机银盐,粘合剂和任选的感光卤化银,其特征在于,所述热敏元件还包含有意添加的金属纳米 相对于至少一种基本上不光敏感的有机银盐的总摩尔浓度的摩尔比在0.05:1至10-6:1范围内的颗粒; 以及用于将上述热敏记录材料的每单位面积中的D max max与所述基本上不受光敏感的有机银盐的比例增加的目的的用途。
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:
A method of reducing noise in an image by decomposing the digital signal representation of the image into a sequence of detail images representing detail at successive scales and a residual image and modulating pixels of at least some of the detail images by applying modulating coefficients. The modulating coefficients are deduced from a single contrast-to-noise ratio image which represents the local contrast-to-noise ratio in each pixel at a predefined scale.
摘要:
A wiper assembly is used to mount large size wiper blades for use in industrial inkjet printers. In order to provide an even wiping action over the length of a print head the wiper is sideways clamped in a rigid wiper blade holder and held in place by a clamping block. Preferably the wiper assembly clamps the wiper over about 20% of the wiper height. The assembly allows for use of individual wiper blades having different characteristics. Separate wiper blades are more easily fabricated and can be replaced easily. The wiper blades may be provided with a heel which enhances mounting efficiency. The wiper assembly may include provisions for easy mounting to allow for rapid exchange of the whole wiper assembly in a printer.
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:
In a device (1) for writing image information onto recording material (2), several separate images (B1 to B13) are assigned to the image information. Marks (M1 to M14) that are assigned to the several images (B1 to B13) are applied to the recording material (2) with a marking means (3). An output unit (4) is used for outputting the image information onto the recording material (2). Using a first transport means (5), the recording material (2) is transported in the area of the marking means (3). A second transport means (6) serves to transport the recording material (2) in the area of the output unit (4). The first transport means (5) and the second transport means (6) are designed such that the transport direction (T4, R4) of the recording material in the output unit (4) can be set independently of the transport of the recording material (2) in the marking means (3).