Radiation detection device, radiation image acquiring system, and method for detecting radiation

Abstract

An X-ray image acquiring system capable of improving the detection accuracy of a foreign substance contained in a subject is provided. An X-ray image acquiring systemirradiates X-rays to a subject S having a predetermined thickness W from an X-ray source, and detects X-rays transmitted through the subject S in a plurality of energy ranges. The X-ray image acquiring systemincludes a low-energy detectorfor detecting, in a low-energy range, X-rays having been transmitted through a region Rextending in a thickness direction within the subject S, a high-energy detectorfor detecting, in a high-energy range, X-rays having been transmitted through a region Rextending in a thickness direction within the subject S, and a timing control sectionfor controlling detection timing of X-rays in the low-energy detectorand the high-energy detectorso that an inspecting region E located at a predetermined site within the subject S is included in the region Rand the region R