Ultrasound

3. probe: Produce an image that resembles an axial CT scan
4. Ultrasound study of the heart
11. Further back in position
13. Demonstrates movement of structures on a scale
17. Sound waves that are reflected by internal structures back to the transducer are termed
23. A structure/region that highly reflects sound energy (light)
24. Creates a high-frequency sound when an electrical current is passed through it
26. system: Converts ultrasound images to digital format
28. dynamics: Allows anatomy to be viewed during the actual scan
29. A structure/region that produces a similar number of echoes as are produced by surrounding tissue
30. A structure/region that does not produce any echoes (black)

1. Sound waves with frequencies higher than audible sound
2. mode: sends and receives sound energy continuously
5. Performed to determine whether any genetic conditions may be present in the fetus
6. Nearer in position to the front
7. Echoes represented by varying degrees of greyness on image
8. closest to the bottom
9. Study vascular structures and the behavior of flowing blood
10. Highly reflective (echogenic) structures as compared with surrounding structures (white)
12. mode: Transducer sends out a short burst of ultrasound energy
14. probe: Produces an image that resembles a sagittal CT scan
15. A structure/region that produces fewer echoes than normal (dark)
16. Anatomy demonstrated on image by a series of blips
18. Birth of ultrasound came from the military using
19. radiation: Radiation where there is insufficient energy to cause ionization
20. shift: Shift in frequency produces an effect called
21. An imaging technique that uses high-frequency sound waves to produce images
22. Principle which must be followed in sonography
25. nearer to the surface
27. Eliminates air trapped between the face of the transducer and the skin surface