Across
- 3. Fluid-filled structure
- 5. Lots of returning echoes
- 8. how crystals convert electrical energy to sound
- 9. Transducer with a curved shape
- 12. Particle motion is perpendicular
- 15. Low-pressure wave region
- 17. Fully tissue-filled
- 18. Image distortion not representative of actual anatomy
- 19. Mix of features or modes
- 22. When waves cancel each other out
- 26. Safe type of energy used in diagnostic ultrasound
- 29. flat-faced transducer
- 30. Measured in dB
- 31. an acoustic variable which affects wave speed
- 32. speed of wave travel
- 33. an acoustic variable: mass/volume
- 34. movement within a medium
- 35. Interfaces between tissues
- 37. Wedge-shaped image
- 38. Wave height or strength
- 40. Requires a medium to travel through
- 41. Measures motion flow
- 42. Position within a cycle of a waveform
- 43. depth a wave travels into the body
- 44. Fewer echoes than normal
Down
- 1. Appears Completely black
- 2. When waves combine to form a larger amplitude
- 4. Radiation that removes tightly-bound electrons
- 6. has both fluid and tissue characteristics
- 7. A naturally occurring piezoelectric material
- 9. High-pressure wave region
- 10. cycles per second
- 11. Dark zone behind object
- 13. Same echoes as nearby tissue
- 14. an acoustic variable: force/area
- 16. Steered beam transducer
- 20. Can travel without a medium
- 21. Time for one cycle
- 23. One full wave
- 24. A wave that produces hearing
- 25. Sends and receives pulses
- 27. Resistance to sound
- 28. Distance between two wave peaks
- 29. Particle motion is parallel
- 36. Brightness control
- 39. Adjusts scan range