Chap 1 - Concepts of Radiologic Science
Across
- 2. X-ray tubes in use today are refinements of the this type of tube
- 7. Cellulose ______ was a substitute for the glass plates originally used in radiography
- 8. Energy released by a chemical reaction
- 10. Discovered x-rays
- 11. Quantity of matter contained in any physical object
- 13. Restricts the useful beam to the part of the body that is being imaged
- 16. Removal of an electron from an atom
- 17. ______ emulsion radiography used 2 glass plates with the emulsion surfaces together. This halved the exposure time.
- 18. X-ray ______ is measured in milliampere (mA)
- 20. Radiation that results from deposits of uranium, thorium, & other radionuclides in the Earth
- 23. Type of rays emitted by the sun & stars
- 26. Kinetic energy of molecules
- 28. X-ray ______ is measured in kilovolt peak (kVp)
Down
- 1. First to use a diaphragm to restrict the x-ray beam
- 2. Large, partially evacuated tube first used to make x-rays
- 3. Energy that represents the work that can be done when an electron moves through an electrical potential difference
- 4. First x-ray fatality in the U.S.
- 5. Absorbs low energy x-rays before they reach the patient
- 6. Anything that occupies space & has mass
- 7. Energy contained within the nucleus of the atom
- 9. First American to invent a moving grid
- 12. Type of energy that is the ability to do work by virtue of position
- 14. Type of screen that helped reduce exposure time
- 15. Energy of motion
- 19. Largest source of natural environmental radiation
- 21. Energy emitted & transfered through space
- 22. Invented the stationary grid
- 24. Introduced an interrupterless transformer to use in place of static machines & induction coils
- 25. The ability to do work
- 27. Developed the fluoroscope