A SIMPLE METHOD OF STEREOSCOPIC ANGIOGRAPHY WITH PARTICULAR REFERENCE TO THE POSTERIOR FOSSA

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Abstract
A simple method of obtaining biplane stereoscopic views of the posterior fossa is described. This is done by rotating the head slowly during an angiographic exposure from the midline to the medial aspect of both eyebrows. When reviewed with a stereoscopic hand viewer, a third dimensional stereoscopic effect is obtained. No additional equipment or exposures are needed.Although this method is considered quite valuable for visualization of the blood vessels of the posterior fossa, the method can also be applied to carotid angiography.Other stereoscopic effect can be obtained with any movement of the subject during programmed serial filming. This can be obtained because of the systolic and diastolic movements of the heart and blood vessels. Therefore, a stereoscopic effect can be obtained with coronary arteriograms, abdominal aortograms, renal aortograms and pulmonary arteriograms.

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