What does an ultrasound machine do?

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Tags

1. #waves
2. #create
3. #computer
4. #receives
5. #images
6. #radiation
7. #sound
8. #reflect
9. #ultrasound
10. #unlike
11. #structures
12. #ionizing
13. #which
14. #inside
15. #organs
16. #makes
17. #machine
18. #sends
19. #frequency
20. #picture
21. #examined