The interventionist can perform many emergent procedures with ultrasound guidance, because of its real-time, multiplanar imaging capability and portability. With the use of color Doppler, additional important information, such as aberrant vessels, can be ascertained to help plan needle trajectory. Ultrasound is also useful for nonemergent procedures, such as biopsies. All interventionists are encouraged to be facile with the use of ultrasound.
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