Across
- 4. reduction of xray intensity
- 5. single‑line ultrasound measurement
- 7. amplifies light signal
- 8. metastable gamma emitter
- 9. contrast for intestines
- 11. high‑frequency sound waves
- 14. detects gamma photons
- 17. coupling medium for ultrasound
- 18. positron emitter used in PET
- 20. rotating xray slices for 3D image
- 23. photon creates electron positron
- 25. parallel photon selector
- 26. radioactive substance for imaging
- 28. specific energy xray emission
- 29. ultrasound bounce at boundary
Down
- 1. full absorption of photon
- 2. electron acceleration to metal target
- 3. frequency shift from motion
- 5. exponential drop in intensity
- 6. scatter with ejected electron
- 9. spectrum from electron deceleration
- 10. velocity from doppler shift
- 12. 2D ultrasound image
- 13. resistance to sound in medium
- 15. produces voltage when stressed
- 16. high‑Z absorber for imaging
- 19. reducing reflection between media
- 21. converts gamma to light
- 22. generates and detects ultrasound
- 24. contrast for blood vessels
- 27. positron annihilation imaging