Importance

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Abstract

A radiation protective device for use in the injection of a bolus of radioactive material into a blood vessel is described. A bolus retainer is used having a bolus chamber sized to retain a desired bolus size. The chamber extends between front and rear ends of the bolus retainer which fits within a radiation shield. The front end is adapted to be connected to a hypodermic needle. The rear end is adapted for connection to a first syringe sized to precisely draw in the desired bolus size and a flushing syringe to advance the bolus into a blood vessel through the hypodermic needle. The bolus retainer has a valve located near its rear end to retain the bolus in the chamber when the flushing syringe is inserted to replace the first syringe. An improved technique for administering a radioactive bolus is described with substantially less radiation exposure and improved control and speed over the bolus injection.

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First Claim