Use of a power injector to deliver contrast material intravenously for computed tomography is a safe alternative to a bolus or drip infusion technique. The authors performed 5,280 injections at rates of 0.5-5.0 mL/sec. Six extravasations occurred, and none resulted in long-term sequelae. This complication rate is 0.1%.

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Pneumatic reduction of ileocolic intussusception in children has been used in Argentina and in China for more than 25 years but has only recently been attempted in North America. It is reported to be safer and more effective than reduction by the hydrostatic pressure of a barium suspension. Our preliminary experience with four patients has been rewarding and we believe it may become the method of choice.