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公开(公告)号：US20090140155A1
公开(公告)日：2009-06-04
申请号：US12271958
申请日：2008-11-17
CPC分类号： H04N5/374 , H04N5/32 , H04N5/357 , H04N5/3658
摘要： As a radiation imaging apparatus which can easily and effectively correct a line noise, there is provided a radiation imaging apparatus having: a conversion unit having a pixel region in which a plurality of pixels each having a conversion element (202) for converting a radiation into an electric charge and a switching element (201) for outputting an electric signal based on the electric charge are arranged in a matrix; a capacitor element (301) arranged outside of the pixel region; a reading out circuit unit (108) for reading out the electric signals from the pixels row by row and reading out, in parallel, a signal from the capacitor element and the electric signal from the pixel; and a correction unit for correcting the electric signal based on the signal from the capacitor element.
摘要翻译： 作为可以容易且有效地校正线路噪声的放射线摄像装置，提供了一种放射线摄像装置，其具有：具有像素区域的转换单元，在该像素区域中，具有转换元件（202）的多个像素，用于将辐射转换成 用于基于电荷输出电信号的电荷和开关元件（201）以矩阵形式布置; 布置在所述像素区域的外侧的电容器元件（301） 读出电路单元（108），用于并行地读出来自像素的电信号，并且并行地读出来自电容器元件的信号和来自像素的电信号; 以及校正单元，用于基于来自电容器元件的信号校正电信号。
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2.发明申请公开(公告)号：US20090146071A1
公开(公告)日：2009-06-11
申请号：US12366354
申请日：2009-02-05
IPC分类号： G01T1/24
CPC分类号： H04N5/3658 , H01L27/14663 , H04N5/32 , H04N5/378
摘要： An imaging apparatus capable of reducing a line noise artifact in a simple configuration without complicated operations includes: a plurality of pixels arranged in row and column directions and having a photoelectric conversion element and a switch element; a plurality of signal wirings connected to the plurality of switch elements in the column direction; a read-out circuit connected to the plurality of signal wirings; and a power source for supplying a voltage to the photoelectric conversion element. With the configuration, the plurality of pixels are classified into a plurality of groups, and the power sources are independently provided for each of the plurality of groups.
摘要翻译： 能够以简单的结构减少线路噪声伪影而不需要复杂的操作的成像设备包括：排列成行和列方向并具有光电转换元件和开关元件的多个像素; 在列方向上连接到多个开关元件的多个信号布线; 连接到所述多个信号布线的读出电路; 以及用于向光电转换元件提供电压的电源。 利用该配置，将多个像素分成多个组，并且为多个组中的每一个独立地提供电源。
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公开(公告)号：US20070125952A1
公开(公告)日：2007-06-07
申请号：US11563806
申请日：2006-11-28
摘要： An object hereof is to restrain occurrence of artifact in an acquired radiation image with comparatively simple configuration without providing wiring between a radiation source and a radiation imaging apparatus to thereby obtain a radiation image with extremely good quality. Therefore, a controller selectively carries out real read operation of reading an electric signal obtained by activating a drive circuit from a signal processing circuit unit in case of detecting X-ray irradiation with an X-ray detecting circuit and dummy read operation of reading an electric signal obtained by activating a drive circuit from a signal processing circuit unit in case of detecting X-ray non-irradiation with an X-ray detecting circuit; discontinues the dummy read operation at the time of detecting the start of X-ray irradiation with the X-ray detecting unit in dummy read operation; and starts real read operation at the time of detecting the finish of X-ray irradiation with the X-ray detecting unit.
摘要翻译： 本发明的目的是通过比较简单的结构来抑制所获取的放射线图像中的伪像的发生，而不需要在辐射源和放射线摄像装置之间提供布线，从而获得具有极高质量的辐射图像。 因此，控制器选择性地执行读取在用X射线检测电路检测X射线照射的情况下从信号处理电路单元激活驱动电路而获得的电信号的实际读取操作，以及读取电 在用X射线检测电路检测X射线不照射的情况下，从信号处理电路单元激活驱动电路而获得的信号; 在伪读取操作中用X射线检测单元检测X射线照射的开始时，停止虚拟读取操作; 并且在用X射线检测单元检测X射线照射的完成时开始真实的读取操作。
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