US

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Across
  1. 1. Frequency unit.
  2. 3. Rather than black or white, this type is red or blue.
  3. 4. Black on an US image.
  4. 6. Lowest frequency mammal.
  5. 8. Complex lesions.
  6. 10. Perfect fluid window for "peek-a-boo".
  7. 12. Device that converts electrical into mechanical energy and vice versa.
  8. 13. dB.
  9. 14. British acronym.
Down
  1. 1. Submarine "listening" device.
  2. 2. Energy cannot be created or destroyed only:
  3. 5. Particle bounce back.
  4. 7. Piezo
  5. 9. Most common organ imaged in US.
  6. 11. TEE window.