抄録
Basing on the law of Berneullie by means of an auto-injector, arteriographic examination of the carotid and vertebral arteries, was performed by using many radio-opaque materials. Analysis of efficiency of various radio-opaque fluids, was performed by injecting with an auto-injector, with the following aims. (1). The relationship between the velocity of blood flow, the quantity of injected fluid and the time taken for injection. (2). The relationship between the quantity of blood flow, the safe amount of injected fluid and its efficienty. (3). Determination of the efficiency of various radio-opaque material basing an (1) and (2).
