Ultrasound basics

Ultrasound

• Basically 3 flavors

  • Spectral - same as color + gives waveform for vessel flow characteristics

  • Color - gives color for directionality of vessel flow

  • Gray Scale - just US, no fancy features

• Doppler Angle

  • Placed by techs

  • Line is placed parallel to vessel

  • Second line drawn by angle of waves coming from the probe

  • If the angle formed by intersection of these two lines is >60 = bad, need to keep between 0-60 deg

• Waveform

  • Direction = above or below line

  • Velocity = distance from line

  • Acceleration = slope of curve

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