Angiocardiography

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Abstract
SURGICAL exploration of the mediastinum today can be accomplished with minimal risk, and yet a certain mortality and morbidity are inherent in the procedure. For this reason, the advantage of being able to determine without exploration the nature of a radiographic shadow in the mediastinum is apparent. If the shadow in question represents a vessel no corrective procedure may be needed, or surgery may be contraindicated because of the danger of injury to a vascular structure. Conversely, if a mediastinal mass is shown to be separate from the vascular system its nature can be identified only by histologic examination.History . . .