ABSTRACT
The objective of photoelectronic-digital imaging in radiology is to develop X-ray imaging components and systems that can replace the commonly used film-screen structures of today. The roots for contributions to photoelectronic-digital imaging can be traced to activities in Great Britain. A photoelectronic X-ray imaging system consists in its most basic form of an X-ray image intensifier, coupling optics, video camera tube, amplifying electronics, and a video display. Diagnostic quality X-ray images, however, require a higher quality of apparatus than that offered by the fluoroscope. The new system must offer performance competitive with film at diagnostic exposure levels and its components must operate over an extended dynamic range heretofore inconceivable while providing outstanding spatial and contrast resolution. The chapter provides a detailed description of the considerations that led to the design of a radiological imaging system at the University of Arizona.
