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

• Typically, a linear 5-7 MHz transducer
  • Superficial structures may require higher frequency
  • Deeper structures or edematous tissue may require a lower frequency transducer
  • Subclavian imaging may require lower frequency 2-5 MHz curved linear or phased array transducers for larger patients.
• Display of two-dimensional structure and motion in real-time
  • Doppler ultrasonic signal documentation
  • Spectral analysis with color and/or power Doppler imaging
• Digital storage of ultrasound images