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1. 发明公开

EP2442554A2 Radiation detector, radiographic image capturing system, radiation detection method, and radiation detection program storage medium 审中-公开
标题翻译：放射线检测器，X射线成像系统，用于存储放射线检测程序中的放射线检测方法和介质
公开(公告)号：EP2442554A2
公开(公告)日：2012-04-18
申请号：EP11184952.7
申请日：2011-10-13
申请人： Fujifilm Corporation
发明人： Enomoto, Jun
IPC分类号： H04N5/32
CPC分类号： H04N5/32 , A61B6/4208 , A61B6/4233 , G01D18/002 , G01D18/004 , G01D18/006 , G01D18/008 , H05G1/64
摘要： A radiation detector includes an image data detecting means that detects, as radiographic image data, charge information corresponding to applied radiation; a controlling means that determines that radiation has been applied if a read value of the detected charge information is equal to or greater than a threshold value and controls the image data detecting means to acquire radiographic image data corresponding to radiation that has passed through a subject; and a changing means that changes the threshold value in accordance with temperature data of the image data detecting means.
摘要翻译：一种辐射探测器，包括：图像数据检测bedeutet，DASS检测作为射线照相图像数据，批次信息对应于施加辐射; 一个控制bedeutet，DASS bestimmt做如果检测到的充电信息的读取值大于等于阈值或更大，并且控制图像数据检测装置来获取放射线图像数据对应于辐射并已经通过受检者的放射线已经应用; 以及改变bedeutet，DASS改变与图像数据检测装置的温度数据在雅舞蹈的阈值。

2. 发明公开

EP0858772A4 X-RAY IMAGING APPARATUS 失效
标题翻译： X摇篮
公开(公告)号：EP0858772A4
公开(公告)日：2006-05-24
申请号：EP96932819
申请日：1996-10-04
申请人： TOSHIBA KK
发明人： FUJITA TERUTOSHI , ITOH KATSUTOSHI
IPC分类号： H01J31/50 , H04N5/225 , H04N5/32 , H05G1/64 , A61B6/00
CPC分类号： H04N5/32 , H01J31/501 , H01J2231/50036 , H01J2231/50068 , H04N5/2253 , H04N5/2259 , H05G1/64
摘要： An X-ray imaging apparatus which can be produced at reduced costs of components and assembly and which includes a camera free from the limitation of a rotation angle even when an object is rotated. The X-ray imaging apparatus (1) comprises an imaging unit (31) having an integrally rotatable structure including a lens (33), an imaging device (37), and substrate (53, 57) carrying a circuit for driving the imaging device and a circuit for processing image signals obtained from the imaging device. Even when an X-ray intensifier tube and an X-ray generator are rotated round the object, the output can be displayed as an erect image on a monitor, whenever necessary. Because component accuracy of a necessary level is secured for only the connection portion of the lens and the substrate, the cost of the components can be reduced. Accordingly to this construction, deviation of the center axis passing through the output screen of the X-ray image intensifier tube and the center of the imaging device of the imaging apparatus hardly exists, and an X-ray image imaging apparatus not generating a focus error can be provided at a low cost.

3. 发明授权

EP1048268B1 Image sensing system 有权
标题翻译：图像传感系统
公开(公告)号：EP1048268B1
公开(公告)日：2005-04-20
申请号：EP00303521.9
申请日：2000-04-26
申请人： CANON KABUSHIKI KAISHA
发明人： Yamayoshi, Junichi
IPC分类号： A61B6/02 , H05G1/38
CPC分类号： A61B6/00 , A61B6/4233 , A61B6/5235 , H05G1/38 , H05G1/44 , H05G1/64

4. 发明公开

EP1029427A1 A METHOD AND A DEVICE FOR PLANAR BEAM RADIOGRAPHY AND A RADIATION DETECTOR 有权
标题翻译：方法和装置水平射流，X线和辐射传感器
公开(公告)号：EP1029427A1
公开(公告)日：2000-08-23
申请号：EP98950575.5
申请日：1998-10-19
申请人： Digiray AB
发明人： CARLSON, Per , IVOTCHKINE, Vladimir , VANIACHINE, Alexandre , FRANCKE, Tom
IPC分类号： H05G1/64 , G01T1/28
CPC分类号： G01T1/185 , H05G1/64
摘要： A method and apparatus for radiography, and especially for planar beam radiography, and also a detector for detecting incident radiation. In the method and apparatus, wherein X-rays (9) are emitted from an X-ray source (60), the X-rays are formed into a planar beam and are transmitted through an object to be imaged (62), and the X-rays transmitted through said object (62) are detected in a detector (64). The detector (64), which detects incident radiation is a gaseous parallel plate avalanche chamber, including electrode arrangements between which a voltage is applied for creating an electrical field, which causes electron-ion avalanches of primary and secondary ionization electrons released by incident radiation. The detector (64) is oriented, in relation to the incident radiation (9), so that the radiation enters sideways between a first and a second parallel plate, between which the electrical field is created. Electrical signals induced by said electron-ion avalanches are detected in at least one detector electrode arrangement, including a plurality of detector electrode elements arranged adjacent to each other, each along a direction being essentially parallel to the incident radiation. Pulses from each detector electrode element are processed in processing electronics, for obtaining values for each pixel corresponding to the respective detector electrode element.

5. 发明公开

EP0988777A1 DIGITAL SCAN MAMMOGRAPHY APPARATUS UTILIZING VELOCITY ADAPTIVE FEEDBACK AND METHOD 失效
标题翻译：利用速度自适应反馈和方法的数字扫描式MAMMOGRAPHY装置
公开(公告)号：EP0988777A1
公开(公告)日：2000-03-29
申请号：EP98923531.2
申请日：1998-05-19
申请人： FISCHER IMAGING CORPORATION
发明人： JEFFERY, Gregory, R.
IPC分类号： H05G1/64
CPC分类号： A61B6/4233 , A61B6/502 , H05G1/64
摘要： An improved imaging system produces consistent, high resolution digital images of a region of interest within a patient's breast (30) by optimizing the modulation transfer function of the system. The system includes an array (84) of detector elements and a source (22) positioned in opposing relation to the detector element array for transmitting an imaging signal to the detector array with the region of interest positioned therebetween such that the detector array receives the imaging signal. The array is configured for scanning movement such that the imaging data is detected and accumulated within the elements of the array during the movement. The detector array is further configured for reading out a portion of the accumulated data in response to a drive input and for internally shifting the accumulated imaging data in response to a shifting signal. The shifting signal is modified in accordance with measured variations in the scanning rate such that a substantially fixed relationship is maintained between the region of interest and the position of the accumulated charge within the array during the scanning movement irrespective of variations in the rate of scan.
摘要翻译：改进的成像系统通过优化系统的调制传递函数产生患者乳房（30）内感兴趣区域的一致，高分辨率数字图像。该系统包括探测器元件的阵列（84）和与探测器元件阵列相对定位的源（22），用于将成像信号传输到探测器阵列，其中感兴趣区域位于探测器阵列之间，使得探测器阵列接收成像信号。阵列被配置用于扫描移动，使得成像数据在移动期间被检测并且被累积在阵列的元件内。检测器阵列还被配置用于响应于驱动输入读出累积的数据的一部分，并且响应于移位信号而内部地移位累积的成像数据。根据扫描速率的测量变化来修改移位信号，使得在扫描移动期间在感兴趣区域和阵列内的累积电荷的位置之间保持基本上固定的关系，而不管扫描速率的变化。

6. 发明公开

EP0693225A4 X-RAY DETECTOR FOR A LOW DOSAGE SCANNING BEAM DIGITAL X-RAY IMAGING SYSTEM 失效
标题翻译：香港特别行政区政府财政司司长芬兰数码公司，NIEDERDOSEN-RASTER-ROENTGENBILDWANDLER
公开(公告)号：EP0693225A4
公开(公告)日：1999-06-23
申请号：EP94927433
申请日：1994-04-05
申请人： CARDIAC MARINERS INC
发明人： MOORMAN JACK WILSON , SKILLICORN BRIAN , FIEKOWSKY PETER JOSEPH , WILENT JOHN WILLIAM
IPC分类号： G21K1/02 , A61B6/00 , A61B6/02 , A61B6/03 , A61B6/06 , A61B6/12 , G01T1/00 , G01T1/161 , G01T1/20 , G01T1/202 , G01T1/29 , G03B42/02 , G06T1/00 , G21K5/02 , H01J35/14 , H01J35/24 , H01L31/09 , H04N5/225 , H05G1/10 , H05G1/64 , H01L31/115
CPC分类号： A61B6/482 , A61B6/027 , A61B6/06 , A61B6/12 , A61B6/4028 , A61B6/4042 , A61B6/4241 , A61B6/4488 , G01T1/2018 , G01T1/202 , G01T1/2971 , H01J35/14 , H05G1/10 , H05G1/64
摘要： A scanning beam digital x-ray imaging system according to the present invention includes an x-ray tube (10) having an electron beam source (161) and a target anode (50). Circuitry is provided for focussing the beam (164) and scanning the beam (20, 30) across the target anode (50) in a predetermined pattern such as a serpentine scan pattern. A collimating element (90), preferably in the form of a perforated grid containing an array of apertures (140), is interposed between the x-ray source (50) and an object to be x-rayed (80). The apertures (140) are oriented to form x-ray beams (100) converging at a detector array (110) on a plane (270) located a selected distance from the collimating element (90). That distance is selected to allow placing the object to be x-rayed (80) in between the collimating element (90) and the detector array (110). A segmented x-ray detector array (110) containing a rectangular matrix of detector elements (170) is located in the detection plane (270). A focal plane (280) is created which gives optimal resolution at a particular, selectable distance from the x-ray source (50).
摘要翻译：根据本发明的扫描光束数字X射线成像系统包括具有电子束源（161）和目标阳极（50）的X射线管（10）。提供电路用于聚焦光束（164）并且以预定图案（例如蛇形扫描图案）跨过目标阳极（50）扫描光束（20,30）。优选以包含孔阵列（140）的穿孔网格的形式的准直元件（90）插入在x射线源（50）和要被x射线的物体（80）之间。孔（140）被定向以形成在位于距准直元件（90）选定距离的平面（270）处会聚在检测器阵列（110）处的X射线束（100）。选择该距离以允许将待X射线的物体（80）放置在准直元件（90）和检测器阵列（110）之间。包含检测器元件（170）的矩形矩阵的分段x射线检测器阵列（110）位于检测平面（270）中。创建焦平面（280），其在距离x射线源（50）的特定可选距离处提供最佳分辨率。

7. 发明公开

EP0812506A1 X-RAY EXAMINATION APPARATUS INCLUDING AN IMAGE PICK-UP APPARATUS WITH A CORRECTION UNIT 失效
标题翻译：在录制设备X射线检查装置校正单元，包括
公开(公告)号：EP0812506A1
公开(公告)日：1997-12-17
申请号：EP96939253.0
申请日：1996-12-06
申请人： PHILIPS ELECTRONICS N.V.
发明人： BRUIJNS, Antonius, Johannes, Cornelis
IPC分类号： A61B6 , G06T1 , H04N5 , H05G1
CPC分类号： H04N5/3656 , A61B6/583 , H04N5/3205 , H05G1/64
摘要： An X-ray examination apparatus (1) includes an X-ray image intensifier (5) for deriving an optical image from an X-ray image. The optical image is picked up by means of an image pick-up apparatus (6) which includes a correction unit (10) which is arranged to form a dark image signal and to derive test image signals from the optical image. Correction values are derived on the basis of the test image signals and the dark image signal. The correction unit (10) is arranged to form a dark image signal, to derive one or more test image signals from the optical image, and to derive the correction values from said test image signals and the dark image signal. The dark image signal is picked up in the absence of incident light on the image sensor (7, 8). The test image signals have a signal level which represents brightness values of the optical image which have been amplified by individual gain values.

8. 发明公开

EP0808465A1 SCANNING-BEAM X-RAY IMAGING SYSTEM 失效
标题翻译：扫描束X射线成像系统
公开(公告)号：EP0808465A1
公开(公告)日：1997-11-26
申请号：EP96906313.0
申请日：1996-02-06
申请人： CARDIAC MARINERS INCORPORATED
发明人： MOORMAN, Jack, W. , SKILLICORN, Brian , SOLOMON, Edward, G. , FIEKOWSKY, Peter, J. , MOORHOUSE, Abigail, A. , MELEN, Robert, E.
IPC分类号： G01N23 , A61B6 , G01T1 , G21K1 , G21K5 , H01J35 , H05G1
CPC分类号： A61B6/4488 , A61B6/06 , A61B6/4028 , A61B6/4233 , G01T1/2018 , G01T1/202 , G01T1/2971 , G21K1/025 , H01J35/14 , H05G1/64
摘要： An x-ray imaging system according to the present invention comprising a stepped scanning-beam x-ray source (10) and a multi-detector array (110). The output of the multi-detector array is input to an image reconstruction engine which combines the outputs of the multi-detectors over selected steps of the x-ray beam to generate an x-ray image of the object (80). A collimating element (90), preferably in the form of a perforated grid containing an array of apertures (140), interposed between the x-ray source (10) and an object (80) to the x-rayed. A multi-detector array assembly (110) comprising alignment components. A maneuverable positioner incorporating an x-ray sensitive marker allowing the determination of the precise position coordinates of the maneuverable positioner.
摘要翻译：根据本发明的X射线成像系统包括阶梯式扫描束X射线源（10）和多探测器阵列（110）。多探测器阵列的输出被输入到图像重建引擎，该引擎将X射线束的选定步骤上的多探测器的输出组合起来以产生对象（80）的X射线图像。一个准直元件（90），最好采用穿孔网格的形式，该准直元件包含一个插入X射线源（10）和X射线物体（80）之间的孔阵列（140）。包括对准部件的多探测器阵列组件（110）。装有X射线敏感标记的可操纵定位器，可以确定机动定位器的精确位置坐标。

9. 发明授权

EP0489908B1 METHOD FOR INCREASING THE ACCURACY OF A RADIATION THERAPY APPARATUS 失效
标题翻译：方法为了提高准确性，放射治疗设备。
公开(公告)号：EP0489908B1
公开(公告)日：1995-01-25
申请号：EP91913970.9
申请日：1991-07-02
申请人： VARIAN ASSOCIATES, INC.
发明人： SEPPI, Edward, J. , SHAPIRO, Edward, G. , PAVKOVICH, John, M.
IPC分类号： H05G1/64
CPC分类号： H05G1/64 , A61B6/032 , A61B6/548 , A61B6/583 , A61N5/1048 , G01T1/1645
摘要： Disclosed is a method for increasing the accuracy of images obtained in radiation therapy apparatus, such as computer tomography simulator which employs an image intensifier (40) and a photodiode detector (44) for converting light from the image intensifier to electrical signals for further processing. The method recognizes that a significant amount of crosstalk can exist in the image intensifier and photodiode detector chain and provides a series of steps for adjusting the electrical signals obtained from the photodiode detector to compensate for the crosstalk.

10. 发明公开

EP0489906A4 ELECTRONICALLY ENHANCED X-RAY DETECTOR APPARATUS 失效
标题翻译：电子增强X射线探测器设备
公开(公告)号：EP0489906A4
公开(公告)日：1993-12-15
申请号：EP91913629
申请日：1991-07-02
申请人： VARIAN ASSOCIATES, INC.
发明人： SEPPI, EDWARD, J. , SHAPIRO, EDWARD, G. , PAVKOVICH, JOHN, M.
IPC分类号： A61B6/03 , A61N5/10 , H05G1/64
CPC分类号： H05G1/64 , A61B6/032 , A61B6/548 , A61B6/583 , A61N5/1048
摘要： The detector of the present invention is suitable for use in a radiation therapy simulator machine. The detector comprises an x-ray image intensifier tube (40) to convert x-rays into photons, a linear array of photodiodes (44) to convert the photons to electrical signals, optical means (52, 54) for coupling the photons to the linear array of photodiodes, and electronic signal processing means (46) for conditioning the signals from the photodiodes. The conditioning includes the use of low noise, phaselocked sampling electronics, implementation of a dual sampling technique for increasing dynamic range, implementation of linearizing technique for increasing the accuracy of the measurements, and implementation of techniques for adjusting the measurements for point spread and background noise effects.

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