Chapter 12 Physics

123456789101112131415
Across
  1. 3. With linear sequential arrays, a ___ group of the crystals are fired simultaneously to create each sound beam.
  2. 5. The sound beam is ___ if the spike pattern is curved
  3. 10. is the firing pattern that focuses a sound beam
  4. 12. shape of an image created by a mechanical transducer, annular phased array, and linear phased array
  5. 13. is the firing pattern that steers a beam to the left or right
  6. 14. contain multiple active elements
Down
  1. 1. delay also known as time differences
  2. 2. The primary advantage of annular phased arrays is that ___ transmit focal zones create each scan line of the image.
  3. 4. ___ array is a combination of linear sequential and linear phased array technologies
  4. 6. This also reduces grating lobes.
  5. 7. mechanical transducer contains a ___ active element
  6. 8. ___ thickness contributes to image quality
  7. 9. The sound beam is ___ if the spike line has a slope
  8. 10. damage to one of the elements of a phased array transducer results in ___ beam steering and focusing
  9. 11. ___reducing the strength of side and grating lobes can be achieved through a process called ___
  10. 15. ___ focusing is achieved dynamically by introducing electrical delays in the signals returning from the transducer