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  • Contrast media injectors designed to inject contrast media into the vascular system to selectively alter the image of an anatomic region of interest. These devices are typically automated electromechanical injectors with a small syringe that may be either reusable or disposable. Ultrasonic contrast media injectors are capable of delivering contrast media (e.g., encapsulated microbubbles filled with perfluorochemicals or, less frequently, particle suspensions) with the pressure, flow range (typically from 0.5 to 3.0 mL/s), and volume required for ultrasonic studies. They are intended to modify the echo amplitude in some specific ultrasonic and Doppler ultrasonic procedures, such as those used for imaging tumors and vascular abnormalities.
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