Use appropriate duplex instrumentation with appropriate frequencies for the vessels being examined.

• Typically, a 2-6 MHz curvilinear or phased array transducer
  • Utilize multiple transducers if available to visualize anteriorly and through the intercostal rib spaces
• Display of two-dimensional structures and motion in real-time
  • Doppler ultrasonic signal documentation
  • Spectral analysis with color and/or power Doppler imaging
• Digital storage of ultrasound images