Across
- 7. An extreme form of hypoechoic, meaning entirely without echoes (echo-free)
- 8. The distance or length of one complete cycle.
- 10. Brightness modulation; two-dimentional presentation of echo-producing interfaces, which are converted into dots and displayed at the correct depth from the transducer.
- 11. Portions of an image that are brighter than surrounding tissues, or tissues that appear brighter than normal.
- 14. Describes structures with equal echo brightness.
- 15. The name given to the highest Doppler frequency or velocity (limit) that can be measured without the appearance of aliasing
- 16. Amplitue modulation, a one-dimensional representation of a reflected sound wave.
Down
- 1. A fluid-filled sac/structure; an echo-free ultrasound appearance producing increased posterior sound transmission.
- 2. The interaction of ultrasound with adjacent tissue.
- 3. Artifact caused by undersampling of signal data in diagnostic imaging.
- 4. The number of particular events that occurs in a specific duration of time.
- 5. Term used to describe the movement of sound through a medium. Normally associated with speed.
- 6. A portion of tissue or an image that has similar echo characteristics throughout.
- 9. A portion of tissue or an image that has differing echo characteristics throughout.
- 12. Portions of an image that are not as bright as surrounding tissues, or tissues that appear less right than normal.
- 13. The "bigness" of a wave. It is the difference between the maximum value and the average or undisturbed value of an acoustic variable.