Sonography Physics Week 1

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Across
  1. 1. ____constructive interference is not purely in or out of phase
  2. 3. array used in abdomen, pelvic, ob/gyne
  3. 5. 1540m/s is the speed of sound (propagation velocity) in what tissue
  4. 7. ______interference when resultant wave amplitude is cancelled out
  5. 9. type of u/s tat detects and measures blood flow
  6. 10. maximum variation of a variable from the mean value (A= [max-min]/2)
  7. 12. short wavelength, ____frequency
  8. 13. pulse comes from ___ starting point for sector imaging
  9. 15. long wavelength, ___frequency
  10. 18. mechanical wave motion perpendicular to wave direction
  11. 19. frequency is determined by the ___ of the wave
  12. 21. mechanical wave motion parallel to wave direciton
  13. 22. this effect is the principle of converting energy by applying pressure to a crystal
  14. 25. the amount of cycles of compression and rarefaction occuring in a second
  15. 26. waves that propogate through a medium
  16. 28. variables of mechanical change in a medium during sound propogation
  17. 30. wave propagation causes a ___increase in the surrounding medium as heat is lost
Down
  1. 2. during compression density ____
  2. 3. transducer frequency for ___ is 1.6-2.5MZ
  3. 4. particle ____ is particles moving locally along the wave path
  4. 5. pie/edge shaped array in cardiac
  5. 6. one cycle per second unit
  6. 8. waves that can propogate in a medium or vacuum
  7. 11. sound is a ____wave
  8. 14. concentration of force
  9. 16. physical distance from one compression to the next
  10. 17. period and frequency are________
  11. 20. this technique sends a pulse of ultrasound into the patient making echos at organ boundaries
  12. 23. three scanning formats, ____, sector, and convex/curved
  13. 24. density=mass/____
  14. 26. unit of measurement for wavelength
  15. 27. ______ interference when resultant wave amplitude is 2x the original
  16. 29. 3 cycles per second is ____Hz