This technique may be performed with various devices such as a venous or arterial catheter, or a specific needle like the Ravussin needle (CHUV® catheter), and requires a jet injector powered by regulated oxygen source.
For the quickest wash method, apply detergent concentrate through a downstream chemical injector, then power wash off.
A dose of 800 mg/kg of an iodinated contrast medium (Ioversol 320 mg/ml, Optiray, Covidien Spa, Italy) [ 42], was injected trough the ventral tail vein, at 3 ml/sec, using a power injector (Optistar injector, Mallinckrodt plc, Dublin, Ireland).
For optimum contrast, it is recommended to use a power injector and selected injection protocols [51].
Injections were performed automatically by using a commercially available power injector (Stellant, Medrad, Pittsburgh, PA).
A power injector is preferred over hand injection to obtain homogeneous vascular opacification, at a rate of 1 3 ml/s.
The physical components of a CTA include the CT scanner, intravenous cannula, access vein size, and power injector; the functional component is the patient's cardiac status.
All patients received iodinated nonionic contrast material (iopromide, Ultravist 300, Schering, Berlin, Germany) intravenously at a rate of 3.5 mL/s with a power injector.
Power injector is used to inject contrast medium and saline chaser at a constant flow rate for the entire duration of the injection.
Two graphs are generated by the power injector, which plot the change in pressure over time and flow rate of the injection over time (3 A, B).
