A radiation detecting element comprising: a sensor section configured from a plurality of hexagonal shaped pixels, each of which includes a semiconductor film that receives irradiated radiation and generates charges, that are arrayed adjacent to each other in a two dimensional pattern; a detecting section, provided for each of the pixels, including a pixel electrode that collects the charges, a storage capacitor that accumulates charges that have been collected by the pixel electrode, and a switching element that reads the charges accumulated in the storage capacitor; a plurality of scan lines that are disposed parallel to each other and that transmit signals for performing switching control of the switching elements; a plurality of data lines that are disposed so as to intersect with the scan lines and so as to bend along a portion of a peripheral edge of the hexagonal shaped pixels, and that transmit electrical signals corresponding to the charges read by the switching elements; and a plurality of common lines that connect together one electrode of each storage capacitor and fix these storage capacitor electrodes at a specific potential, and that extend in a straight line shape between the plurality of data lines, wherein the switching elements are connected to 3-continuous-side-provided data lines and the common lines are disposed between the plurality of data lines so as not to intersect with the data lines, characterized in that the switching elements are placed within regions surrounded by a line segment that divides the pixels in two in a direction intersecting with the extension direction of the plurality of scan lines and the 3 continuous data-line-provided sides out of peripheral edges of the pixels, and in that in every pixel row (20a-20d) delimited by the plurality of scan lines, the storage capacitors and switching elements are placed alternately on one side or the other side of the data line to which the respective switching element is connected. a sensor section configured from a plurality of hexagonal shaped pixels, each of which includes a semiconductor film that receives irradiated radiation and generates charges, that are arrayed adjacent to each other in a two dimensional pattern; a detecting section, provided for each of the pixels, including a pixel electrode that collects the charges, a storage capacitor that accumulates charges that have been collected by the pixel electrode, and a switching element that reads the charges accumulated in the storage capacitor; a plurality of scan lines that are disposed parallel to each other and that transmit signals for performing switching control of the switching elements; a plurality of data lines that are disposed so as to intersect with the scan lines and so as to bend along a portion of a peripheral edge of the hexagonal shaped pixels, and that transmit electrical signals corresponding to the charges read by the switching elements; and a plurality of common lines that connect together one electrode of each storage capacitor and fix these storage capacitor electrodes at a specific potential, and that extend in a straight line shape between the plurality of data lines, wherein the switching elements are connected to 3-continuous-side-provided data lines and the common lines are disposed between the plurality of data lines so as not to intersect with the data lines, the switching elements are placed within regions surrounded by a line segment that divides the pixels in two in a direction intersecting with the extension direction of the plurality of scan lines and the 3 continuous data-line-provided sides out of peripheral edges of the pixels, and in that in every pixel row (20a-20d) delimited by the plurality of scan lines, the storage capacitors and switching elements are placed alternately on one side or the other side of the data line to which the respective switching element is connected.