Amorphous Selenium Flat Panel Detectors
Encyclopedia
Amorphous Selenium Flat Panel Detectors are direct conversion detectors, used in digital radiography, for medical imaging
applications. Direct conversion is a clinically proven, one-step process that utilizes a high-efficiency, amorphous selenium
(a-Se) - based sensor to capture and convert incident X-ray photons directly into electric charge.
The signal profile in the direct conversion process is sharp and well defined. The amorphous selenium (a-Se) layer provides high spatial resolution.
By comparison, other leading digital radiography technologies utilize scintillator-based conversion, typically either CsI or GadOx which convert X-ray photons to light and then light to charge. This two-step process, in which the signal profile is broadened due to optical scatter, may create loss of spatial resolution and image degradation.
Medical imaging
Medical imaging is the technique and process used to create images of the human body for clinical purposes or medical science...
applications. Direct conversion is a clinically proven, one-step process that utilizes a high-efficiency, amorphous selenium
Selenium
Selenium is a chemical element with atomic number 34, chemical symbol Se, and an atomic mass of 78.96. It is a nonmetal, whose properties are intermediate between those of adjacent chalcogen elements sulfur and tellurium...
(a-Se) - based sensor to capture and convert incident X-ray photons directly into electric charge.
The signal profile in the direct conversion process is sharp and well defined. The amorphous selenium (a-Se) layer provides high spatial resolution.
By comparison, other leading digital radiography technologies utilize scintillator-based conversion, typically either CsI or GadOx which convert X-ray photons to light and then light to charge. This two-step process, in which the signal profile is broadened due to optical scatter, may create loss of spatial resolution and image degradation.