PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus that can simply process an image and display the result at a high-speed. SOLUTION: The radiation imaging apparatus is configured with a signal processing circuit that converts an electric charge signal imaged by an imaging device into a digital signal, a selector circuit that applies interleave control to the converted signal data at an interleaving transfer rate, and a display control section that displays image data subjected to dark current correction based on signal data with respect to a data current of the imaging device and converted by the signal processing circuit and the signal data subjected to interleaving control as a simple display image.