-
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
发明人： Yamayoshi, Junichi
CPC分类号： A61B6/00 , A61B6/4233 , A61B6/5235 , H05G1/38 , H05G1/44 , H05G1/64
-
2.发明授权RECOGNIZER OF STAFF OR PATIENT BODY PARTS USING MARKERS TO PREVENT OR REDUCE UNWANTED IRRADIATION 有权使用标记识别工作人员或患者身体部位以防止或减少不需要的辐照
公开(公告)号：EP3134001B1
公开(公告)日：2018-01-24
申请号：EP15716550.7
申请日：2015-04-21
CPC分类号： A61B6/107 , A61B6/0492 , A61B6/06 , A61B6/08 , A61B6/10 , A61B6/405 , A61B6/4482 , A61B6/542 , A61B6/545 , A61B42/00 , A61B46/00 , A61B90/37 , A61B90/39 , A61B2090/376 , A61B2090/3937 , A61B2090/3966 , A61B2090/3979
摘要： An imaging system (10) and related method, where a marker detection system (MDS) detects one or more markers (MK) spatially arranged in association with an area (A). If the marker detection system (MDS) detects that the area (A) is within a field-of-view (FoV) of the imaging system (10) or is at least within a predefined distance thereof, a control signal is issued in respect of said area (A) to an image acquisition system (ACS) of the imaging system (10). The area (A) may be one of a hand (32) of a human operator or a part of a patient (12) to be imaged.
-
3.发明公开EXPOSURE CONTROL USING DIGITAL RADIOGRAPHY DETECTOR 审中-公开BELICHTUNGSSTEUERUNG MITHILEL EINES DIGITALENRÖNTGENDETEKTORS
公开(公告)号：EP2559325A4
公开(公告)日：2014-06-11
申请号：EP11769406
申请日：2011-04-12
发明人： LALENA MICHAEL C , WANG XIAOHUI , FOOS DAVID H
CPC分类号： A61B6/08 , A61B6/4208 , A61B6/4266 , A61B6/4405 , A61B6/461 , A61B6/542 , A61B6/547 , A61B6/587
摘要： A method for sensing a level of ionizing radiation directed from a radiation source through a subject and toward a digital radiography detector, executed at least in part by a logic processor, obtains image data that relates the position of the subject to the digital radiography detector and assigns one or more radiant-energy sensing elements of the digital radiography detector as one or more exposure control sensing elements. The one or more exposure control sensing elements are sampled one or more times during exposure to measure the exposure directed to the subject. A signal is provided to terminate exposure according to exposure measurements obtained from the one or more exposure control sensing elements within the digital radiography detector.
摘要翻译： 一种用于感测从辐射源通过对象引导并且至少部分地由逻辑处理器执行的数字放射线检测器的电离辐射的水平的方法获得将对象的位置与数字放射线检测器相关联的图像数据，以及 将数字射线照相检测器的一个或多个辐射能量感测元件分配为一个或多个曝光控制感测元件。 一个或多个曝光控制感测元件在曝光期间被采样一次或多次以测量针对对象的曝光。 提供信号以根据从数字放射线检测器内的一个或多个曝光控制感测元件获得的曝光测量来终止曝光。
-
公开(公告)号：EP2559325A2
公开(公告)日：2013-02-20
申请号：EP11769406.7
申请日：2011-04-12
CPC分类号： A61B6/08 , A61B6/4208 , A61B6/4266 , A61B6/4405 , A61B6/461 , A61B6/542 , A61B6/547 , A61B6/587
摘要： A method for sensing a level of ionizing radiation directed from a radiation source through a subject and toward a digital radiography detector, executed at least in part by a logic processor, obtains image data that relates the position of the subject to the digital radiography detector and assigns one or more radiant-energy sensing elements of the digital radiography detector as one or more exposure control sensing elements. The one or more exposure control sensing elements are sampled one or more times during exposure to measure the exposure directed to the subject. A signal is provided to terminate exposure according to exposure measurements obtained from the one or more exposure control sensing elements within the digital radiography detector.
-
公开(公告)号：EP1482836B1
公开(公告)日：2010-06-23
申请号：EP03707285.7
申请日：2003-03-12
申请人： XCounter AB
发明人： FRANCKE, Tom , THUNBERG, Stefan
摘要： An apparatus for recording a 2D image of an object comprises a plurality of 1D detector units (41), each exposed to ionizing radiation, as transmitted through or scattered off the object, and being arranged for 1D imaging of the radiation, to which it is exposed. The detector units are distributed in a dense array such that the 1D images of the radiation from the detector units are distributed over a substantial portion of the 2D image. The apparatus includes a device (87-89, 91) for moving the detector units relative the object while the detector units repeatedly detect to create the 2D image of the object; and a control device for (i) controlling the detector units to detect ionizing radiation during a short period of time before or during an initial part of the movement, (ii) calculating an optimum exposure time for the repeated detection based on the short period of time detection, and (iii) controlling the repeated detection to automatically obtain the optimum exposure time.
-
6.发明授权
-
公开(公告)号：EP2559325B1
公开(公告)日：2018-10-24
申请号：EP11769406.7
申请日：2011-04-12
CPC分类号： A61B6/08 , A61B6/4208 , A61B6/4266 , A61B6/4405 , A61B6/461 , A61B6/542 , A61B6/547 , A61B6/587
摘要： A method for sensing a level of ionizing radiation directed from a radiation source through a subject and toward a digital radiography detector, executed at least in part by a logic processor, obtains image data that relates the position of the subject to the digital radiography detector and assigns one or more radiant-energy sensing elements of the digital radiography detector as one or more exposure control sensing elements. The one or more exposure control sensing elements are sampled one or more times during exposure to measure the exposure directed to the subject. A signal is provided to terminate exposure according to exposure measurements obtained from the one or more exposure control sensing elements within the digital radiography detector.
-
公开(公告)号：EP1482836A1
公开(公告)日：2004-12-08
申请号：EP03707285.7
申请日：2003-03-12
申请人： XCounter AB
发明人： FRANCKE, Tom , THUNBERG, Stefan
摘要： An apparatus for recording a 2D image of an object comprises a plurality of 1D detector units (41), each exposed to ionizing radiation, as transmitted through or scattered off the object, and being arranged for 1D imaging of the radiation, to which it is exposed. The detector units are distributed in a dense array such that the 1D images of the radiation from the detector units are distributed over a substantial portion of the 2D image. The apparatus includes a device (87-89, 91) for moving the detector units relative the object while the detector units repeatedly detect to create the 2D image of the object; and a control device for (i) controlling the detector units to detect ionizing radiation during a short period of time before or during an initial part of the movement, (ii) calculating an optimum exposure time for the repeated detection based on the short period of time detection, and (iii) controlling the repeated detection to automatically obtain the optimum exposure time.
-
公开(公告)号：EP0746966B1
公开(公告)日：2003-07-30
申请号：EP95936075.1
申请日：1995-11-21
摘要： An X-ray examination apparatus comprises an exposure control circuit (20) which supplies a control signal for adjustment of the X-ray source (1). The exposure control circuit (20) determines the control signal from an area of the X-ray image in which no overexposure occurs. To this end, the exposure control circuit comprises a selection unit (23) for determining a measuring part from an electronic image signal, formed from the X-ray image by means of an X-ray detector (5, 8, 7), by comparing the signal level of the electronic image signal with an upper limit value which is dependent on the setting of the X-ray apparatus, for example of the high voltage and the anode current of the X-ray source. The upper limit value preferably amounts to the difference between the overexposure level and a safety margin. The safety margin serves to render the exposure control circuit insensitive to small fluctuations of the intensity and energy of the X-ray beam (3) generated by the X-ray source (1).
-
公开(公告)号：EP0944296A2
公开(公告)日：1999-09-22
申请号：EP99302074.2
申请日：1999-03-18
发明人： YU, Philip H.
IPC分类号： H05G1/38
CPC分类号： H05G1/38
摘要： A digital automatic X-ray exposure control system includes a digital frequency modulated output signal circuit generating a digital frequency modulated output signal (42) having a pulse rate that is frequency modulated in proportion to the level of an X-ray beam received at an ion chamber of an X-ray imaging apparatus. A digital input circuit (22) connected to the output circuit via a digital communication interface cable receives the digital output signal and generates an exposure termination signal (80) for use by the X-ray imaging apparatus to interrupt the generation of the X-ray beam at a precise exposure level. The digital input circuit includes a digital counter circuit (70) for counting pulses in the output signal as a pulse count value that is compared against an exposure length parameter value (74) for generating a count match signal (76) based on a correspondence therebetween. A processor circuit (72) receives the count match signal and generates the exposure termination signal for extinguishing the X-ray beam. An X-ray film sensitivity circuit (64) and a digital short-time exposure compensation circuit (62) is included in the subject digital automatic exposure control system. The X-ray film sensitivity circuit includes a programmable clock divider circuit (96) for scaling the digital output signal in accordance with the screen sensitivity of the X-ray film. The digital short-time compensation circuit (62) includes a programmable frequency multiplier circuit (86) for multiplying the digital output signal by a clock multiplier scaling factor parameter during a brief programmable timing period.
摘要翻译： 数字自动X射线曝光控制系统包括数字频率调制输出信号电路，该数字调制输出信号电路产生数字频率调制输出信号（42），其具有与在离子处接收的X射线束的电平成比例的频率调制的脉冲频率 X射线成像装置的腔室。 经由数字通信接口电缆连接到输出电路的数字输入电路（22）接收数字输出信号并产生曝光终止信号（80）供X射线成像设备使用以中断X射线 光束在精确的曝光水平。 数字输入电路包括数字计数器电路（70），用于对输出信号中的脉冲进行计数，作为与用于产生计数匹配信号（76）的曝光长度参数值（74）进行比较的脉冲计数值，基于它们之间的对应关系 。 处理器电路（72）接收计数匹配信号并产生用于熄灭X射线束的曝光终止信号。 X射线胶片敏感性电路（64）和数字短时间曝光补偿电路（62）被包括在被摄体数字自动曝光控制系统中。 X射线胶片敏感度电路包括用于根据X射线胶片的屏幕灵敏度对数字输出信号进行缩放的可编程时钟分频器电路（96）。 数字短时补偿电路（62）包括可编程倍频器电路（86），用于在短暂的可编程定时周期期间将数字输出信号乘以时钟倍频缩放因子参数。
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.01 秒)
