Patent ID: 8280005

Claim:
A radiation detection device that detects radiation irradiated from a radiation source to a subject having a predetermined thickness and transmitted through the subject in a plurality of energy ranges, comprising: a first detector that detects, in a first energy range, radiation having been transmitted through a first region extending in a thickness direction within the subject; a second detector that detects, in a second energy range, radiation having been transmitted through a second region extending in a thickness direction within the subject; and a timing control section that controls detection timing of radiation in the first detector and the second detector so that an inspecting region located at a predetermined site within the subject is included in the first region and the second region, wherein the timing control section controls the detection timing by changing a delay time delaying the detection timing of the second detector relative to the detection timing of the first detector, and wherein the delay time is calculated based on a width of a dead zone region, a conveying speed at which the subject passes through the dead zone region, and a magnification ratio being a ratio of a distance between the radiation source and an inspection center of the subject to a distance between the radiation source and the first detector or the second detector.