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Comparison Of Imaging Characteristics Of Digital Subtraction Angiography Utilizing Geometrical Magnification And Electro-Optical Magnification Techniques

Pei‐Jan Paul Lin, Richard A. Mintzer

Abstract

The resolution characteristics of a digital subtraction angiography (DSA) system have been evaluated under two different magnification techniques, namely, the geometrical magnification technique and the electro-optical magnification technique. It has been found that the DSA system resolution is less dependent on the focal spot size [or modulation transfer function (MTF)] than that of routine radiographic angiographic studies. The evaluation results have been utilized to reestablish the DSA examination procedure.

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Available abstract

Key concepts: Magnification, Optical transfer function, Optics, Digital subtraction angiography, Subtraction, Resolution (logic), Image resolution, Angiography