| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Dual-screen digital radiographic imaging detector array | US12102154 | 2008-04-14 | US07569832B2 | 2009-08-04 | Timothy John Tredwell; Roger Stanley Kerr; Robert W. Kulpinski; John Yorkston; Timothy John Wojcik; Kwok-Leung Yip |
| A radiographic imaging device has a first scintillating phosphor screen having a first thickness and a second scintillating phosphor screen having a second thickness. A transparent substrate is disposed between the first and second screens. An imaging array formed on a side of the substrate includes multiple photosensors and an array of readout elements. | ||||||
| 42 | Apparatus for asymmetric dual-screen digital radiography | US11487539 | 2006-07-14 | US20080011960A1 | 2008-01-17 | John Yorkston; Kwok-Leung Yip; Timothy J. Wojcik |
| The present invention relates to radiographic imaging apparatus for taking X-ray images of an object. In various two-panel radiographic imaging apparatus configurations, a front panel and back panel have substrates, arrays of signal sensing elements and readout devices, and passivation layers. The front and back panels have scintillating phosphor layers responsive to X-rays passing through an object produce light which illuminates the signal sensing elements to provide signals representing X-ray images. The X-ray apparatus has means for combining the signals of the X-ray images to produce a composite X-ray image. Furthermore, the composition and thickness of the scintillating phosphor layers are selected, relative to each other, to improve the diagnostic efficacy of the composite X-ray image. Alternatively, a radiographic imaging apparatus has a single panel having arrays of signal sensing elements and readout devices and scintillating phosphor layers that are disposed on both sides of a single substrate. The present invention further relates to various embodiments of indirect dual-screen DR flat-panel imager apparatus that provide single-exposure dual energy imaging. | ||||||
| 43 | Radiation image phosphor or scintillator panel | US11716950 | 2007-03-12 | US20070246662A1 | 2007-10-25 | Jean-Pierre Tahon; Paul Leblans; Carlo Uyttendaele; Alexander Williamson |
| In favor of adhesion a radiation image phosphor or scintillator panel comprises as an arrangement of layers, in consecutive order, an anodized aluminum support, a precoat layer and a phosphor or scintillator layer comprising needle-shaped phosphor or scintillator crystals, wherein said precoat layer has a thickness in the range from 4 μm to 15 μm when consisting of an organic polymer selected from the group consisting of cellyte, poly-acrylate, poly-methyl-methacrylate, poly-methylacrylate, polystyrene, polystyrene-acrylonitrile, polyurethane, hexafunctional polyacrylate, poly-vinylidene-difluoride, epoxy functionalized polymers or wherein said precoat layer has a thickness in the range from 1 μm to less than 5 μm when consisting of an organo-silane based polymer. | ||||||
| 44 | Binderless phosphor screen having a pigmented interlayer | US10342712 | 2002-11-21 | US20030134157A1 | 2003-07-17 | Paul Leblans; Luc Struye; Ludo Joly |
| A binderless stimulable phosphor screen is provided, comprising a vapor deposited phosphor layer on a support, wherein between the support and the phosphor layer a ceramic layer is present, wherein said ceramic layer preferably comprises a mixture of pigments so that the optical density of the phosphor screen is higher for the stimulating wavelength than for the stimulated emission wavelength of the vapor deposited phosphor. | ||||||
| 45 | Radiation image conversion panel | US09973523 | 2001-10-09 | US20020070351A1 | 2002-06-13 | Takafumi Yanagita; Takehiko Shoji; Katsuya Kishinami |
| A radiation image conversion panel comprising, (i) a phosphor sheet which contains a support having thereon an stimulating light absorbing layer (A) being colored to absorb the stimulating light, and a stimulable phosphor layer in the order;and (ii) a protecting layer which covers the stimulable phosphor layer of the phosphor sheet, wherein the protective layer comprises a stimulating light absorbing layer (B) being colored to absorb the stimulating light, and the layers (A) and (B) each have a smaller absorbance at a peak wavelength of a stimulated emission than an absorbance at a peak wavelength of the stimulating light, and a thickness of the layer (A) is larger than a thickness of the layer (B). | ||||||
| 46 | Radiation image storage panel | US991251 | 1997-12-16 | US6031237A | 2000-02-29 | Shinichiro Fukui; Hideki Suzuki |
| A radiation image storage panel has a phosphor layer comprising a stimulable phosphor and a binder, in which the binder is composed of a resin containing a thermo-plastic polyurethane elastomer and a radical scavenger. The panel shows excellent durability against both light and repeated conveying. | ||||||
| 47 | Radiological image intensifier tube having an aluminum layer | US997724 | 1997-12-24 | US5981935A | 1999-11-09 | Yvan Raverdy |
| The disclosure relates to radiological image intensifier tubes comprising a vacuum electron tube and a luminescent observation screen comprising means to improve the contrast of the image. These means consist of a layer of aluminium with a thickness of at least 1 micrometer, partially absorbent for the incident electrons, placed in the path of the electrons generated by the tube and in the vicinity of the layer of luminophores. The deposited layer has the effect of reducing, firstly, the quantity of electrons re-emitted from the observation screen to the tube and, secondly, the proportion of these electrons that return to strike the layer of luminophores. Application to radiological type image intensifier tubes. | ||||||
| 48 | Radiation image storage panel comprising a colorant | US42463 | 1998-03-16 | US5905014A | 1999-05-18 | Rudolf Van de Bergh |
| A radiation image storage panel is provided having a support, an intermediate layer and a phosphor layer comprising a binder and a stimulable phosphor dispersed therein, said panel being colored with a colorant so that the mean reflectance of said panel in the wavelength region of the stimulating rays for said stimulating phosphor is lower than the mean reflectance of said panel in the wavelength region of the light emitted by said stimulable phosphor upon stimulation thereof, characterized in that said colorant is a triarylmethane dye having at least one aqueous alkaline soluble group and is present in at least one of said support, said phosphor layer or an intermediate layer between said support and said phosphor layer. | ||||||
| 49 | Luminescent article with high pigment to binder ratio and manufacture thereof | US331577 | 1994-11-02 | US5789021A | 1998-08-04 | Philip Dooms; Jozef Aertbelien; Jan Van Havenbergh |
| In accordance with the present invention a luminescent article is provided which luminescent article comprises a self-supporting or supported layer of phosphor particles dispersed in a binding medium and a protective coating thereover characterised in that the binding medium comprises one or more rubbery and/or elastomeric polymers, in that the ratio by volume of pigment to binding medium is at least 70:30 and at most 92:8 and the packing ratio is less than 67%. By said rubbery and/or elastomeric polymers the phosphor layer has improved elasticity of the screen, high protection against mechanical damage and thus high ease of manipulation and high pigment to binder ratio. Moreover no compression manipulation is necessary to get a thinner coated phosphor layer with reduced voids, and nevertheless a better image quality, i.a. sharpness, is obtained. One or more antioxidants may be present. | ||||||
| 50 | Radiation image storage panel and its preparation | US412689 | 1995-03-29 | US5519228A | 1996-05-21 | Atsunori Takasu; Yuichi Hosoi |
| A radiation image storage panel comprises a stimulable phosphor layer, a cushioning layer and a coated protective layer, wherein the cushioning layer shows an elongation at rupture more than that of the protective layer. | ||||||
| 51 | X-ray image pickup tube | US215950 | 1994-03-22 | US5515411A | 1996-05-07 | Hiromichi Tonami; Takahisa Nishikawa; Takayuki Takemoto; Yutaro Kimura; Keiichi Hiragaki; Hidetoshi Kishimoto; Tatsuya Shimizu; Shiro Oikawa; Tutomu Katou; Shirou Suzuki; Toshio Yamagishi; Kenkichi Tanioka |
| An X-ray image pickup tube converts a transmitted X-ray image into electric signals. The pickup tube includes a target structure having a fluorescent element, and a translucent conductive film for receiving a high voltage, with a photoconductive film laminated thereupon. The fluorescent element receives transmitted X rays in a two-dimensional distribution, and converts them into visible rays in a two-dimensional distribution. The translucnet conductive film is optically coupled to a surface of the fluorescent element opposite from an X-ray incident surface thereof. The photoconductive film includes an amorphors semiconductor layer which converts the visible rays transmitted in a two-dimensional distribution through the translucent conductive film, into electric charges in a two-dimensional distribution, and which multiplies the electric charges in the two-dimensional distribution based on electric fields formed by the high voltage applied to the translucent conductive film. The pickup tube also has a signal reading device in the form of an electron gun or switching elements for scanning a surface of the photoconductive film, as electric signals, a two-dimensional electric potential distribution occurring on the photoconductive film. | ||||||
| 52 | Method for detecting light emitted by two surfaces of a stimulable phosphor sheet | US137759 | 1993-10-19 | US5483081A | 1996-01-09 | Yuichi Hosoi |
| A stimulable phosphor sheet comprises a stimulable phosphor layer, and a colored layer, which is located on one side of the stimulable phosphor layer and contains a coloring agent. The coloring agent is capable of selectively absorbing stimulating rays, The stimulable phosphor sheet is scanned with the stimulating rays from the side opposite to the colored layer. The light, which is emitted by the two surfaces of the stimulable phosphor sheet during its scanning with the stimulating rays, is photoelectrically detected from the two surfaces of the stimulable phosphor sheet, and an image signal representing the radiation image is thereby obtained. The sharpness of an image reproduced from the image signal is thereby efficiently kept high. A second embodiment provides an optical layer on a stimulable phosphor sheet, wherein the optical layer transmits only light which is incident from a direction substantially normal to the surface of the stimulable phosphor sheet. The optical layer prevents the rays which are irradiated from a side of the phosphor sheet having the optical layer from being reabsorbed by the phosphor sheet after reflecting from a photodetector which is located on the same side of the phosphor sheet as the optical layer and which detects light emitted from the phosphor sheet in response to stimulating rays. | ||||||
| 53 | Radiographic intensifying screen and process for preparing the same | US254769 | 1994-06-06 | US5477053A | 1995-12-19 | Akio Umemoto; Yujiro Suzuki; Tutomu Watanabe; Michio Tanaka; Nobuaki Koike |
| This invention relates to a radiographic intensifying screen excellent in sharpness and durability, which comprises a support, a fluorescent layer formed on the support, and a protective layer formed by coating a solution containing a protective layer-forming resin on the fluorescent layer, wherein a water repellent layer or a resin layer which may optionally contain a water repellent is provided between the fluorescent layer and the protective layer, or the fluorescent layer may optionally contain a water repellent, and also relates to a process for preparing the same. | ||||||
| 54 | Radiographic intensifying screen | US295477 | 1994-08-25 | US5475229A | 1995-12-12 | Masamichi Itabashi; Yuichi Hosoi; Terumi Matsuda |
| An improvement of a radiographic intensifying screen comprises a support, a phosphor layer and a protective layer in order resides in the protective layer which is formed on the phosphor layer by coating a fluoro-resin on the phosphor layer to give a coated layer having a thickness of less than 5 .mu.m. | ||||||
| 55 | X-ray examination apparatus with an imaging arrangement having a plurality of image sensors | US108865 | 1993-08-18 | US5412705A | 1995-05-02 | Rudolph M. Snoeren; Jan W. Slotboom |
| An x-ray examination apparatus includes an imaging arrangement, devised for performing fluoroscopy. Which has image sensors that are efficiently optically coupled with an x-ray sensitive radiation conversion screen. Consequently, the image sensors produce an electrical signal having a high signal-to-noise ration when low doses of x-radiation are administered. An x-ray conversion screen is provided with a tapetum filter so as to concentrate light in the forward direction. Furthermore, the x-ray conversion screen is preferably fitted with a light reflecting layer for reflecting light that has been reflected by the tapetum filter, said light reflecting layer being transparent for x-radiation. Further concentration of light in the forward direction is achieved by placing a light-transparent material having a suitable refractive index between the radiation conversion screen and lenses that concentrate the light onto the image sensors. Semiconductor image sensors in the form of charge-coupled devices are provided for converting a visible image into an electronic video signal. In order to improve the effectiveness of the CCDs, weak avalanching is applied so as to increase both sensitivity and signal-to-noise ratio of the sensors. | ||||||
| 56 | X-ray intensifying screens with an improved speed/image quality relationship | US118740 | 1993-09-10 | US5381015A | 1995-01-10 | Philip Dooms |
| X-ray intensifying screens of different speed classes are disclosed, showing a synergistic effect between screen speed or sensitivity and image quality, especially sharpness, if for each speed class the right combination is applied for the amount of dye in the screens and the weight amount and weight coverage of selected mixtures of yttrium tantalate or niobate phosphor and rare earth activated alkaline earth metal fluorohalide phosphors coated onto selected supports showing well-determined reflectance characteristics. | ||||||
| 57 | Radiation image storage panel | US688271 | 1991-04-22 | US5151604A | 1992-09-29 | Katsuhiro Kohda; Terumi Matsuda |
| A radiation image storage panel comprises a support made of a plastic film or a paper material, a stimulable phosphor layer and optionally one or more other layers. The radiation image storage panel contains an electroconductive zinc oxide whisker in at least one layer. | ||||||
| 58 | Antistatic lead screens for use with x-ray films | US490071 | 1990-03-07 | US5025164A | 1991-06-18 | Lloyd G. Sidwell; Conrad E. Miller |
| An improved intensifying lead screen for use with photographic, industrial X-ray films, having a low propensity to produce electrostatic changes, is described. This screen comprises a lead foil adhesively applied to a polyester support with an overcoat or protective layer applied over the lead layer and coated thereon, a layer of a fluorosurfactant. | ||||||
| 59 | RADIATION DETECTOR | US15844241 | 2017-12-15 | US20180275287A1 | 2018-09-27 | Keiko ITAYA; Takafumi YANAGITA; Kazuhiro MAEDA |
| A radiation detector includes: a scintillator panel having a scintillator layer; and a photoelectric conversion panel having a support substrate, a light receiving element, and a switching element, wherein the light receiving element faces the scintillator layer, the photoelectric conversion panel has flexibility, and the scintillator layer is formed by being sealed with a moisture-proof material. | ||||||
| 60 | Scintillator panel and production method thereof | US14900855 | 2014-07-03 | US10068679B2 | 2018-09-04 | Tadashi Arimoto; Hiromichi Shindou; Atsushi Hasegawa |
| Provided is a scintillator panel realizing reduced image unevenness and the like by virtue of having a cushioning layer between a support and a phosphor. The cushioning layer absorbs irregularities on the phosphor layer when the scintillator panel is compression bonded to a planar light-receiving element and thereby allows the phosphor layer to be in contact with the planar light-receiving element without any gaps in the interface. The scintillator panel includes, in the order named, a support, a cushioning layer disposed on a surface of the support, and a phosphor layer deposited on the surface of the cushioning layer, the cushioning layer having a specific thickness, the phosphor layer being configured to be placed into uniform contact with a surface of a planar light-receiving element when the phosphor layer is pressed against the planar light-receiving element by the application of a pressure from the support side. | ||||||
QQ群二维码
意见反馈
意见反馈