A radiation detection apparatus may include a scintillator to emit scintillating light in response to absorbing radiation, a photosensor to generate an electronic pulse in response to receiving the scintillating light, and a reflector surrounding the photosensor. The photosensor may be coupled to a wiring board and the reflector may be coupled to the wiring board. The radiation detection apparatus can be more compact and more rugged as compared to radiation detection apparatuses that include a photomultiplier tube.