“…A number of patients have been seen with posttraumatic intracranial occlusions on arteriography, and when followed with serial arteriograms or post-mortem examinations in many (Higazi 1963, Hollin and Silverstein 1965, Hollin et al 1966, Jacobsen and Skinhoj 1957, Verbiest and Calliauw 1959, Wolpert and Schecter 1966, though not all (Duman and Stephens 1963), the vessels were seen to have reopened. Some of these lesions, too, may have been embolic.…”