Structures operable to detect radiation are described. An imaging system is also described having the structures. For example, a structure may include two screens and a photosensor array between the two screens. One of the screens is comprised of a scintillating glass substrate. The scintillating glass substrate may serve two purposes. The scintillating glass substrate converts incident x-rays into light photons. Additionally, the scintillating glass substrate is a substrate for the photosensor array. The photosensor array is configured to detect light photons that reach the photosensor array from both screens.