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ARRT LMRT EXAM COMPLETE ANSWERS 100% CORRECT (LATEST 2024 / 2025 )
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ARRT LMRT EXAM COMPLETE ANSWERS 100% CORRECT (LATEST 2024 / 2025 )
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ARRT LMRT EXAMCOMPLETE ANSWERS 100% CORRECT (LATEST )
1. Most X-ray tubes in use today have high speed rotation at: 10,000 rpm
2. The is used to rotate the anode: Electromagnetic induction motor
3. The process of changing Alternating Current (AC) into Direct Current(DC): Rectification
4. Above 70 kVp, about 15% of the beam is?: Characteristic
5. The German word that means braking and slowing?: Bremsstrahlung
6. Every x-ray exposure will contain photons produced from bremsstrahlunginteractions
Below 70 kVp, about what percentage is the beam is brems?: 100%
7. Every x-ray exposure will contain photons produced from bremsstrahlunginteractions
Above 70 kVp, about what percentage is the beam is brems?: 85%
8. For Characteristic radiation to be created Above 70 kVp, about what per-centage of the
beam is characteristic?: 15%
9. Created when an incoming electron interacts with the k-shell electron andknocks it out of
its orbit. When the electron void is filled with an outer shell electron an x-ray photon is
created
this is?: Characteristic radiation
10. What is unsharpness? (Geometric blur or focal spot blur): Penumbra
11. Chicago 1920 worlds largest and oldest professional radiation organiza-tion: ASRT
12. formed in 1922 establish standards and examinations: ARRT
13. Formed in 1969 national organization that conducts accreditation: JRCERT
14. The radiation that leaves the tube is?: Primary radiation
15. The x-ray beam that exits on the opposite side of the patient is called?: -
Remnant radiation or exit radiation
16. A "unseen image" is called?: Latent image
17. The absorption of an x-ray beam is called?
(the patient is the primary source of scatter): Attenuation
, 18. Occurs at energy levels throughout the diagnostic xray range of 40 to 125kVp: Compton
scatter
19. Occurs when an xray photon collides with an inner shell orbital electron of an atom. the
photons energy is absorbed into the process of rejecting theelectron: Photoelectric Effect
20. Medical term for throwing up: Emesis
21. Another term for heart attack?: myocardial infarction (MI)
22. Medical term for nosebleed: epistaxis
23. Disease transmission
it is any medium that transports micro organisms examples include contami-nated food water
drugs and blood: Vehicle
24. Disease transmission
it is spread by dust containing either Endospores or droplet nuclei: Airbornecontamination
25. Disease transmission
an object that has been in contact with pathogenic organisms calledexamples it is commonly
on xray table, up right Bucky, etc.: Fomites
26. Disease transmission
an arthropod examples insect, spider, or similar form. mosquitoes, fleas: Vec-tors
27. Roentgen
discovered x-rays while working with a tube?: Crookes
28. An "electron cloud" surrounding the filament of the cathode is referred toas a: Space
charge
29. Free electrons of X-ray production come from the: Filament
30. The creation of the space charge in the X-ray tube produces:: thermionicemission
31. The majority of photons in the X-ray beam are created by which process?-
: Bremsstrahlung interactions
32. More than 99% of the energy of the electron stream is converted into:: heat
33. the high-speed rotation (10,000 rpm) of the anode enables: Greater dissipa-tion of heat
from high technical factors
34. The degree of angulation of the x-ray tube target will determine the:: size ofthe actual
and effective focal spot
35. A dual-focus X-ray tube has:
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