A radiographic image detection apparatus includes a detection panel and a housing for containing the detection panel. The housing consists of a front surface member, a back surface member, and a carbon plate attached so as to cover an opening formed in the front surface member. The carbon plate is faced to the detection panel. To the carbon plate is adhered a transparent sheet having transmissivity to radiation and visible light. A first index and a second index are printed on an inner surface of the transparent sheet. The first index is a square-frame shaped index showing a radiation detection range of the detection panel. The second index is a cross-shaped index showing a center position of the radiation detection range. The first and second indices are formed of nonmetallic UV curable ink having no radiation shielding properties.