Abstract
T HE increasing usefulness of arteriography has come about, at least in part , through greater safety and simplification of the procedure. In an a t t empt to simplify the test further, bilateral simultaneous injection of the carotid ar tery for the anteroposterior projection has been carried out in 100 cases. There has been no increase in morbidi ty or mortal i ty in this series. In contrast to separate injection of the left and right sides for anteroposterior projection, bilateral simultaneous injection reduces the necessary number of exposures as well as the time consumed in individual injections. Further , and perhaps most important, bilateral demonstrat ion of vessels provides for comparison of both sides on a single plate under similar conditions of injection.
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