Radiation imaging apparatus and radiation imaging system

A radiation imaging apparatus comprising:

• a plurality of conversion elements configured to convert a radial ray into an electric signal;
• a signal line configured to read electric signals obtained by the plurality of conversion elements;
• a plurality of switch elements configured to be connected between the plurality of conversion elements and the signal line;
• and
• a plurality of driving lines configured to be connected to control terminals of the plurality of switch elements,
• wherein the plurality of conversion elements include a first conversion element, a second conversion element, and a third conversion element,
• the plurality of driving lines include a first driving line and a second driving line,
• the first conversion element and the signal line are in a conductive state when a switch element connected to the first driving line is in an On state,
• the second conversion element and the signal line are in a conductive state when a switch element connected to the second driving line is in an On state, and
• the third conversion element and the signal line are in a conductive state when a switch element connected to the first driving line and a switch element connected to the second driving line are in an On state.