An adiological image detection apparatus 3 includes a phosphor 60 that contains a fluorescent material which emits fluorescence by radiation exposure, and a sensor panel 61 which is provided to be in close contact with the phosphor, and detects the fluorescence emitted from the phosphor. One embodiment includes a substrate, and a slot received in the substrate. The percentage of homologues having a carbon number of C10 or less is less than about 3 wt %. Furthermore, the memory system has a memory access mechanism that is separate from the data users.