CT Review Essentials

Card Set Information

Author:
nfhoover
ID:
69744
Filename:
CT Review Essentials
Updated:
2011-03-08 02:12:46
Tags:
CT Review
Folders:

Description:
CT Review
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user nfhoover on FreezingBlue Flashcards. What would you like to do?


  1. Which of the following scientists were instrumental in the initial development of CT.
    1. Alan Cormack
    2. Raymond Damadian
    3. Geodfrey Hounsfield
    4. Paul Lauterbur

    A. All are correct
    B. Only 2 and 4 are correct
    C. Only 4 is correct
    D. Only 1 and 3 are correct
    E. Only 1, 2, and 3 are correct
    D. Only 1 and 3 are correct
    (this multiple choice question has been scrambled)
  2. Computed tomograpy (CT) results in a/an
    A. analog image
    B. curvilinear image
    C. linear image
    D. image in time
    E. digital image
    E. digital image
    (this multiple choice question has been scrambled)
  3. The principal advantage of CT over projection radiography is
    A. speed of image acquisition
    B. spatial resolution
    C. energy resolution
    D. temporal resolution
    E. contrast resolution
    E. contrast resolution
    (this multiple choice question has been scrambled)
  4. Which of the following terms does not fit?
    A. tomos
    B. section
    C. volume
    D. axial
    E. slice
    C. volume
    (this multiple choice question has been scrambled)
  5. Computed tomography is otherwise identified as
    A. volumetric tomography
    B. reflection tomography
    C. temporal tomography
    D. emission tomography
    E. transmission tomography
    E. transmission tomography
    (this multiple choice question has been scrambled)
  6. When compared to projection radiography, conventional tomography shows
    A. better spatial resolution
    B. improved contrast resolution
    C. reduced patient dose
    D. relaxed quality control
    E. less operator involvement
    B. improved contrast resolution
    (this multiple choice question has been scrambled)
  7. Which of the following involves emission of a signal from a patient?
    A. diagnostic ultrasound
    B. CT
    C. spiral CT
    D. magnetic resonance imaging
    E. projection radiography
    D. magnetic resonance imaging
    (this multiple choice question has been scrambled)
  8. The data acquisition in CT results in a/an
    A. oblique image
    B. volume image
    C. coronal image
    D. transverse image
    E. sagittal image
    D. transverse image
    (this multiple choice question has been scrambled)
  9. Which of the following scientists received the Nobel Prize for their work leading to CT?
    1. Alan Cormack
    2. Raymond Damadian
    3. Geodfrey Hounsfield
    4. Paul Lauterbur

    A. Only 4 is correct
    B. All are correct
    C. Only 1, 2, and 3 are correct
    D. Only 1 and 3 are correct
    E. Only 2 and 4 are correct
    D. Only 1 and 3 are correct
    (this multiple choice question has been scrambled)
  10. Which of the following are characteristic limitation of CT?
    1. spatial resolution
    2. artifact generation
    3. z-axis resolution
    4. patient dose

    A. Only 1, 2, and 3 are correct
    B. All are correct
    C. Only 1 and 3 are correct
    D. Only 4 is correct
    E. Only 2 and 4 are correct
    B. all are correct
    (this multiple choice question has been scrambled)
  11. A characteristic feature of a projection radiograph is
    A. difficult quality control requirements
    B. tissue superimposition
    C. poor spatial resolution
    D. lengthy data acquisition
    E. excessive patient dose
    B. tissue superimposition
    (this multiple choice question has been scrambled)
  12. which of the following finds application in bone mineral assay for evaluation of osteoporosis?
    A. projection radiography
    B. radioisotope emission tomography
    C. conventional tomography
    D. CT
    E. fluoroscopy
    D. CT
    (this multiple choice question has been scrambled)
  13. Which of the following involves emission of a signal from a patient?
    A. projection radiography
    B. radioisotope imaging
    C. CT
    D. spiral CT
    E. diagnostic ultrasound
    B. radioisotope imaging
    (this multiple choice question has been scrambled)
  14. Compared to projection radiography, conventional tomography results in improved contrast resolution because
    A. the x-ray beam is selectively filtered
    B. out of plane tissue are blurred
    C. tissues are superimposed
    D. imaging time is reduced
    E. precise beam collimation is employed
    B. out of plane tissue are blurred
    (this multiple choice question has been scrambled)
  15. Computed tomography results in improved contrast resolution because
    A. KVp is significantly increased
    B. precise beam collimation is employed
    C. tissues are superimposed
    D. digital techniques are employed
    E. tissue superimposition is reduced
    B. precise beam collimation is employed
    (this multiple choice question has been scrambled)
  16. The mathematics of back projection applied to image reconstruction in CT is credited to
    A. Perry Sprawls
    B. Raymond Damadian
    C. Frank Lauterbur
    D. Alan Cormack
    E. Geodfrey Houndsfield
    D. Alan Cormack
    (this multiple choice question has been scrambled)
  17. Place the following in chronological order.
    1. CT
    2. electron beam CT (EBCT)
    3. multisection computed tomography
    4. spiral CT

    A. 1, 2, 4, 3
    B. 1, 2, 3, 4
    C. 1, 4, 2, 3
    D. 1, 3, 2, 4
    E. 1, 3, 4, 2
    A. 1, 2, 4, 3
    (this multiple choice question has been scrambled)
  18. The term "projection," when applied to CT, refers to
    A. the shape of the x-ray beam projected on the patient
    B. a data set representing x-ray attenuation in the patient
    C. the size of the x-ray beam projected on the patient
    D. the mathematics of image reconstruction
    E. speed of image acquisition
    B. a data set representing x-ray attenuation in the patient
    (this multiple choice question has been scrambled)
  19. Compared to projection radiography, conventional tomography will improve
    1. contrast resolution
    2. patient dose
    3. superimposition of tissues
    4. spatial resolution
    b. patient dose
  20. Which of the following image modalities are likely to have less scatter radiation affecting the image?
    A. projection of radiography
    B. CT
    C. fluoroscopy
    D. radioisotope emission tomography
    E. conventional tomography
    B. CT
    (this multiple choice question has been scrambled)
  21. What is the principal cause of reduced contrast in projection radiography?
    A. scatter radiation
    B. kVp
    C. leakage radiation
    D. collimation
    E. useful beam radiation
    A. scatter radiation
    (this multiple choice question has been scrambled)
  22. The first CT image was demonstrated by
    A. Geodfrey Hounsfield
    B. Raymond Damadian
    C. Larry Rothenberg
    D. Alan Cormack
    E. Frank Lauterbur
    A. Geodfrey Hounsfield
    (this multiple choice question has been scrambled)
  23. The Principal advantage of CT over conventional tomography is
    A. reduced patient dose
    B. improved contrast resolution
    C. speed of image acquisition
    D. improved spatial resolution
    c. fewer artifacts
    B. improved contrast resolution
    (this multiple choice question has been scrambled)
  24. Which of the following imaging modalities appeared first?
    A. emission imaging with radioisotopes
    B. diagnostic ultrasound
    C. spiral CT
    D. electron beam CT (EBCT)
    E. projection radiography
    E. projection radiography
    (this multiple choice question has been scrambled)
  25. Image presentation in conventional tomography is
    A. coronal
    B. transverse
    C. sagittal
    D. axial
    E. volumetric
    D. axial
    (this multiple choice question has been scrambled)
  26. When compared to projection radiography, conventional tomography shows
    A. relaxed quality control
    B. better spatial resolution
    C. less tissue superimposition
    D. reduced patient dose
    E. less operator involvement
    C. less tissue superimposition
    (this multiple choice question has been scrambled)
  27. Compared to CT, film/screen radiography will give
    1. better spatial resolution
    2. lower entrance surface dose for a single image
    3. lower tube heating for a single image
    4. better low contrast resolution

    A. Only 4 is correct
    B. Only 1 and 3 are correct
    C. Only 1, 2, and 3 are correct
    D. Only 2 and 4 are correct
    E. All are correct
    C. Only 1, 2, and 3 are correct
    (this multiple choice question has been scrambled)
  28. Which of the following is a characteristic of a first-generation CT Imager?
    A. rotate geometry
    B. detector array
    C. slip ring technology
    D. fan beam
    E. pencil beam
    E. pencil beam
    (this multiple choice question has been scrambled)
  29. Which of the following CT imagers is often referred to as the heart scan?
    A. third generation
    B. spiral
    C. electron beam
    D. second generation
    E. fourth generation
    C. spiral
    (this multiple choice question has been scrambled)
  30. Which of the following is a particular characteristic of fourth-generation CT imagers?
    A. 1 s imaging time
    B. fixed detector array
    C. rotate-translate motion
    D. fan x-ray beam geometry
    E. multielement detector array
    B. fixed detector array
    (this multiple choice question has been scrambled)
  31. Which of the following CT imagers has no mechanical moving parts in the gantry?
    A. fourth generation
    B. electron beam
    C. second generation
    D. third generation
    E. spiral
    B. electron beam
    (this multiple choice question has been scrambled)
  32. Which of the following is characteristic of a first-generation CT imager?
    A. detector array
    B. five minute imaging time
    C. rotate beam
    D. slip ring technology
    E. fan beam
    B. five minute imaging time
    (this multiple choice question has been scrambled)
  33. 6. Which of the following features led to the development of the spiral CT imager?
    A. electronic slip rings
    B. fast reconstruction algorithms
    C. megaheat unit x-ray tubes
    D. high-frequency generator
    E. molybdenum/rhodium targeted x-ray tubes
    A. electronic slip rings
    (this multiple choice question has been scrambled)
  34. Ring artifacts are characteristic of
    A. spiral CT
    B. second-generation CT
    C. first-generation CT
    D. fourth-generation CT
    E. third-generation CT
    E. third-generation CT
    (this multiple choice question has been scrambled)
  35. Which of the following is characteristic of a second-generation CT imager?
    A. single image projection per translation
    B. able to image head only, not body
    C. pencil-shaped x-ray beam
    D. translate-rotate motion
    E. five minute imaging time
    D. translate-rotate motion
    (this multiple choice question has been scrambled)
  36. The principal advantage to electron beam CT (EBCT) is
    A. imaging without x-rays
    B. one second imaging time
    C. large volume imaging
    D. removal of ring artifacts
    E. subsecond imaging time
    E. subsecond imaging time
    (this multiple choice question has been scrambled)
  37. During spiral CT, the motion of the patient couch is
    A. continuously advanced
    B. stationary
    C. rotating
    D. alternating advance retreat
    E. advanced step wise
    A. continuously advanced
    (this multiple choice question has been scrambled)
  38. Which of the following is characteristic of a second-generation CT imager?
    A. pencil-shaped x-ray beam
    B. five minute imaging time
    C. thirty second imaging time
    D. single image projection per translation
    E. able to image head only , not body
    C. thirty second imaging time
    (this multiple choice question has been scrambled)
  39. Which of following the are characteristic of a first-generation CT imager?
    1. pencil beam
    2. single detector
    3. translate-rotate motion
    4. no body imaging

    A. only 2 and 4 are correct
    B. all are correct
    C. only 1 and 3 are correct
    D. only 4 is correct
    E. only 1,2, and 3 are correct
    B. all are correct
    (this multiple choice question has been scrambled)
  40. Current design of electron CT (EBCT) allows for simultaneous production of
    A. four slices
    B. two slices
    C. a single slice
    D. sixteen slices
    E. eight slices
    A. four slices
    (this multiple choice question has been scrambled)
  41. Which of the following is characteristic of a second-generation CT imager?
    1. fan-shaped x-ray beam
    2. detector array
    3. translate-rotate motion
    4. capable of imaging head and body

    A. Only 1,2, and 3 are correct
    B. All are correct
    C. Only 2 and 4 are correct
    D. Only 4 is correct
    E. Only 1 and 3 are correct
    B. All are correct
    (this multiple choice question has been scrambled)
  42. X-radiation produced by an electron beam CT (EBCT) imager is emitted from a/an
    A. rotating semicircular tungsten ring
    B. electron tungsten plasma
    C. rotating tungsten
    D. electron plasma
    E. fixed tungsten semicircular ring
    E. fixed tungsten semicircular ring
    (this multiple choice question has been scrambled)

What would you like to do?

Home > Flashcards > Print Preview