Exam (elaborations)
ARRT PRACTICE EXAM COMPLETE ANSWERS 100% CORRECT (LATEST 2024 / 2025 )
- Course
- Institution
ARRT PRACTICE EXAM COMPLETE ANSWERS 100% CORRECT (LATEST 2024 / 2025 )
[Show more]
Content preview
ARRT PRACTICE EXAMCOMPLETE ANSWERS 100% CORRECT (LATEST )
1. Effective dose may be found in what published material?: NCRP reports
2. The smallest particle of an element that retains the characteristics of theelement is an?:
atom
3. Atomic mass =: number of protons = number of neutrons
4. Electronic timers used in xray equipment allow for exposure times of?: -
1/1000 seconds
5. To ensure consistency of radiographic quality from one exposure to thenext, what device
may be used?: AEC
6. Devices in the x-ray circuit that operate on the principle of mutual inductionare called?:
Transformers
7. The high voltage section of the x-ray circuit makes use of what type oftransformer?: Step-
up
8. Xray tube NEEDS what type of current?: DC direct current rectifier changesAC to DC
9. The result of thermionic emission is?: Electron cloud
10. Focusing cup is located at the?: Cathode
11. Outer shell filling holes in the K-shell is?: Characteristic K-shell holds 2elections
12. Digital fluro should be viewed on?: High resolution monitor
13. A primary advantage of digital fluro is?: Post processing and manipulation ofthe image
14. Algorithm is?: A mathematical formula used to reconstruct the image in digitalimaging.
15. In CR each pixel corresponds to a shade of gray representing an area inthe patient known
as a?: voxel
16. Lightness and darkness maybe be adjusted by?: Adjusting WINDOW LEVEL(brightness)
Window width (contrast or gray level)
17. The window level in CR is the?: Midpoint of densities
18. The amount of receptor exposure is controlled PRIMARILY by?: mAs
19. The visible image may also be called the?: Manifest image
20. The rule or law that governs changing technique using kVp is the?: 15%rule
, 21. If SID is halved, what may be said about receptor exposure?: exposure isquadrupled
22. CR cassettes should be erased at least?: Every 48 hours
23. The equation H/D (height/distance) refers to what?: grid ratio
24. If the exposure field is not accurately recognized the histogram?: Widens
25. Edge enhancement provides?: Artificial increase in display CONTRAST at anedge of the
image.
26. Grid frequency is described as?: The number of lead strips per inch orcentimeters
27. When working with CR and DR one must be aware that their response toscatter radiation
is?: Very sensative
28. A histogram analysis error may be caused by?: Inappropriate collimation
29. Smoothing provides?: Evenness in brightness
30. Consistency of image appearance is achieved through the use of?: Uniformprocessing codes
31. Poor spatial resolution =: Short SIDBetter with Long SID
32. Beam restriction has the following effect on contrast?: Shorter scale ofcontrast
33. As kVp increases, there is an increased production of?: Short wavelengths
34. The relationship between kVp and receptor exposure is:: Direct but noproportional
35. Grids that have strips angled to coincide with divergence of the x-ray beamare called?:
Focused grids
36. In digital imaging the radiographer must be aware that:: The image isdetermined by the
total exposure.
37. Units of radiation absorbed in the air?: Gya
38. The change in the x-ray beam as it travels through a patient?: attenuation
39. photon tissue interaction that makes radiology possible because of it'screation of
contrast?: photoelectric interaction (fully absorbed = contrast)
40. Unit of radioactivity?: becquerel
41. unit of effective dose?: Sievert
42. Linear energy transfer ...: varies for different types of radiation
43. unit of Bq would be used in what imaging modality?: Nuclear medicine
44. graphs that show relationship between radiation received and the organ-isms response?:
dose-response relationship
45. Medical x-rays are examples of?: artificially produced radiation
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ExamNavigator. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79835 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now