A radiation detection apparatus comprises a planar radiation detecting panel in which a plurality of detecting units are arranged in a two-dimensional array； an output circuit that drives driving signal lines for driving the detecting units； a readout circuit that reads, via image signal lines, a signal from the detecting units； a conductive layer arranged close to the radiation detecting panel； a first connecting member that connects the ground of the readout circuit and the conductive layer； and a second connecting member that connects the conductive layer and wiring for providing a drive-off bias to the driving signal lines. The first connecting member is connected to the radiation detecting panel in a position between ¼ and ¾ of a length of a side of the radiation detecting panel to which the readout circuit is connected.
