Intro to Sonography

  1. The study of sound traces back to the _______ __________.
    ancient greeks
  2. 1500’s, __________ __ _____ was intrigued with the physical properties of sound. He discovered that sound travels in waves. Also credited with the discovery that the angle of reflection is equal to the angle of incidence
    Leonardo da Vinci
  3. Mid 1630’s _________ discovered that the frequency of sound determines pitch.
  4. Late 1600’s – ___ _____ ______ discovers the theory of velocity and a chemist ______ ______ popularized the theory of the elasticity of air.
    Sir Isaac Newton; Robert Boyle
  5. Experiments performed and mathematical calculations were developed that lead to the current understanding of the fundamentals of _________
  6. Acoustics is the
    study of science, engineering, and the art of generating, propagating, and receiving sound waves.
  7. 1793 _______ ________ studied the activities of bats. He discovered that bats could navigate while blinded but not if deafened.
    Lazzaro Spallanzani
  8. The field of ultrasound was made accessible in the 1880s by ________ and ________ ______ with the discovery of the piezoelectric effect.
    Jacques and Pierre Curie
  9. What discovery lead to the development of transducers?
    piezoelectric effect
  10. In the ___ century, scientists learned how to produce ultrasound and put it to work
  11. In 1942, Austrian, _______ _____ was one of the first physicians to use ultrasound for diagnostic purposes
    Karl Dussik
  12. In 1947, ______ ____ successful detected gallstones.
    George Ludwig
  13. In 1950 at the University of Washington, “flow meters” were developed also known as continuous wave ________.
  14. In the 1950’s and 1960’s _______ ______ were developed for use in cardiology and obstetrics
    compound scanners
  15. Mid 1960’s _______ ______ _____ were initially used for obstetrics to locate placenta, for fetal position and fetal age
    Contact static scanner
  16. In early 1960s in Philadelphia, Dr. __ ______ ______ designed real-time obstetric ultrasound system.
    Dr. J Stauffer Lehman
  17. What technology helped to show the different amplitudes of soft tissue?
    gray scale
  18. When did serious Doppler research start?
  19. What year did the University of Washington group also designed the first pulsed-wave Doppler scanner capable of combining 2-D gray-scale imaging?
  20. ______-______ ________ were produced by automated scanners with sufficient speed to visualize and record moving structures. Also known as B-Scanner.
    real-time ultrasound
Card Set
Intro to Sonography