Speaker
Martin Spahn
Description
The applications of x-ray imaging in the medical field are manifold and range from computer tomography (CT), radiography, angiography to mammography. Depending on the application, the x-ray systems support diagnostic and/or interventional procedures and generate 2D (projection) or 3D (volumetric) data sets. The performance requirements for the different application can vary strongly with respect to pixel size, frame rates, x-ray flux and detector size.
Healthcare trends such as the change of the demographic structure, outcome orientation of procedures or higher efficiency influence the design of new systems and their components such as the x-ray detector. High dose efficiency, support of new applications and cost efficiency reflect these demands.
Today´s predominant x-ray detector technologies are integrating detectors and are based on scintiallators, in particular CsI, and photodiodes of amorphous silicon (radiography, angiography) or crystalline silicon (CT) or on the direct convertering material selenium (mammography).
Future developments will include the optimization of current technologies but may also bring new technologies such as CMOS and counting pixel devices in order to further increase performance characteristics or allow new applications.
