Performance Of A Large Screen Fluoroscopic Imaging System

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Abstract
In recent years the need for large flat screen fluoroscopic imaging systems has been pointed up by the development and subsequent use of new technologies and new procedures in diagnostic radiology. Videodensitometry, if it is to be extended to clinical applications involving studies of the thorax, kidneys, etc., requires an input screen having an area greater than that of the usual x-ray image intensifier (Ref. 1). A similar requirement exists for optimal use to be made of fluoroscopic tomography (Refs. 2, 3, 4). Further, if these very promising developments are to be made truly quantitative rather than relative, the distortion of the resultant optical intensity due to screen curvature needs to be eliminated. The use of digitized systems with on-line processing and with their capabilities for making precision measurements at the levels of minimum detectability, makes this development even more desirable (Refs. 5, 6). Examples of this need can also be found in the qualitative or imaging aspects of diagnostic radiology.

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