RADIOLOGICAL IMAGE DETECTION DEVICE AND RADIOLOGICAL IMAGING SYSTEM

摘要

This radiological imaging system is provided with a radiation source and a radiological image detection device. The radiological image detection device has a solid-state detector and a wavelength conversion layer arranged in order from the incident radiation side. The wavelength conversion layer has a first phosphor layer in which first phosphor particles are dispersed by a binder, and a second phosphor layer in which second phosphor particles, which have a smaller average particle size than the first phosphor particles, are dispersed by the binder. The first phosphor layer is positioned more toward the solid-state detector side than the second phosphor layer, and is joined to or pressed against the solid-state sensor. The first and second phosphor layers are distributed in such a manner that the weight of the binder per unit thickness gradually decreases toward the solid-state detector side.