Radiation imaging apparatus and radiation imaging system

The invention provides a radiation imaging apparatus and a radiation imaging system. The radiation imaging apparatus has a function of detecting start and end of radiation emission and an emission amount of radiation. The radiation imaging apparatus includes: a plurality of pixels configured to generate a signal according to a radiation dose; a signal line connected to the plurality of pixels; a read circuit configured to read a signal from the pixel via the signal line and generate a value according to the signal; and a control unit configured to control an operation of the read circuit. In generating a diagnostic image, rows including pixels from which signals have been read during radiation emission are not read. 本发明提供一种放射线成像装置和放射线成像系统。所述放射线成像装置具有检测放射线发射的开始和结束以及放射线的发射量的功能。所述放射线成像装置包括：多个像素，所述多个像素被构造为根据放射线剂量生成信号；信号线，所述信号线连接到多个像素；读取电路，所述读取线路被构造为经由信号线从像素读取信号并且根据信号生成值；以及控制单元，所述控制单元被构造为控制读取电路的操作。在生成诊断图像时，不读取包括在放射线发射期间已经从中读取信号的像素的行。