Abstract

A new technique for stereoscopic magnification angiography has been developed and combined with routine abdominal angiography. The technique utilizes two divergent x-ray beams at a 34 degree angle, with a 3.5 cm focal spot separation at a 94 cm focal-film distance, produced by a synchronous arc rotation of a microfocus x-ray tube. The synchronous motion of the tube is maintained by using an electromechanical device. A magnification factor of 2.0 to 3.0 is used, and 12 films are exposed in a series, the fastest sequence being 1.5 films per second. This technique provides the advantages of magnification and stereoscopic angiography, with excellent demonstration of small arterial branches and abnormal vascularity in three dimensions.

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