Patent ID: 8138011

Claim:
A method of manufacturing a radiation-detecting device that includes a substrate including a plurality of first columnar scintillators spaced from each other and a plurality of second columnar scintillators which are located between the neighboring first columnar scintillators and which are spaced from the first columnar scintillators adjacent thereto and also includes a plurality of photodetecting elements each located at a position overlapping with a corresponding one of the first columnar scintillators, the method comprising: a step of preparing the substrate such that the substrate has a surface having an uneven section having protruding portions and a plurality of flat sections which are surrounded by the uneven section and which are spaced from each other; and a step of forming the first columnar scintillators and the second columnar scintillators on the flat sections and the protruding portions, respectively, by depositing a scintillator material on the substrate having the uneven section and the flat sections, wherein the uneven section has recessed portions and satisfies the following inequality: h/d≧ 1 where h is the depth of each recessed portion and d is the distance between the protruding portions.