BLOCK 2: Transducer Properties
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Learning Objectives By Lesson
Transducer Components
  • Describe the basic components of the transducer
  • Describe what is unique about piezoelectric material
  • Determine the appropriate piezoelectric material thickness for a given transducer to provide a desired operating frequency
  • Describe the importance of the transducer’s matching layer
  • Determine the optimal matching layer thickness
Damping & Q Factor
  • Describe the purpose of the damping block (backing layer) of the transducer and how it influences spatial resolution of images
  • Explain the effect of damping on spatial pulse length
  • Explain the effect of damping on the frequency spectrum around a resonance transducer
  • Define the Q-factor metric
  • Identify the indications for high Q and low Q transducers
Transducer Arrays
  • Describe the difference between linear and curvilinear arrays
  • Describe the difference between linear (sequential) activation and phased activation
  • Describe the purpose of the electronic circuitry in phased activation
Ultrasound Beam Characteristics
  • Describe the basic characteristics of an ultrasound beam
  • Describe what determines the near and far field distances
  • Explain what focal zone represents
  • Explain the difference between one transmit focus and multiple transmit foci
  • Describe the purpose of receive focus
  • Describe what side lobes are and how they come about

GCU Education Team
Physician Educators