Test1-230

  1. The care billis to insure that radiological services are



    D. all the ansers
  2. The half value layer (HVL) is a measurement of the beams



    B. quality
  3. Crossover is a radiographic problem because it decreases



    D. recorded detail
  4. Poor film-screen contact results in a loss of



    A. detail
  5. Common film artifacts include



    A. all answers
  6. The emulsion of the x-ray film consists of



    B. silver halide crystals
  7. SMPTE stands for?
    Society of Motion Picture and Television Engineers
  8. Medical images are transferred using the ____ standard.



    B. DICOM
  9. It is acceptable to perform a _____ test, instead of measuring the focal spot.



    A. line pair
  10. Screen characteristics (speed, detail etc) are determined by



    A. all answers
  11. Filtration is measured



    C. in mm of Al equivalent
  12. Developer can be contaminated by low amounts of



    B. fixer
  13. The quality of the beam is effected by



    B. kVp setting
  14. The Roentgen is a measure of the beams



    A. intensity
  15. Sensitometry is the study of



    D. silver halide response to exposure and development
  16. A cresent moon shaped dark artifact is caused by



    D. crimped film
  17. The timer must be accurate to witin



    A. 5%
  18. mAs linearity should be within



    D. 10%
  19. Repeat rates should be no more than?
    3-10%
  20. Film identification must have (as a minimum) what 5 items?
    • Patient ID
    • Patient name
    • Institutional name
    • Date of exam
    • Side (left of right)
  21. What is the purpose of film processing?
    get a latent image to a manefest image
  22. The backup timer should be set to _____ of the expected time.
    150%
  23. Focal spot size is measured by a?
    pin hole camers, star pattern test, line pair test
  24. Standiong 7 feet from the patient, you receive a dose of 2.8mR per minute. If you move to a distance of 30 inches, what is your new exposure rate?
    21.95 mR
  25. A standard pattern made to meausre the resolution of digital display systems is called the



    C. SMPTE pattern
  26. Medical images are transferred using the ____ standard.



    B. DICOM
  27. The standard for Digital Imaging and Communication was developed by a commotte of the _____



    C. ACR and NEMA
  28. The consistent appearance of DICOM images on any compatable digital display device is acheived through



    A. perceptual linearization
  29. The quality control standard for flat panel displays was released by ____ in 1998.



    B. VESA
  30. The task group report 18 is a procedure manual for?



    C. testing digital display devices
  31. There are ____ types of photometers commonly used.
    2
  32. A photometer is a _____.



    D. luminescence meter
  33. A telescope photometer is used at _____ (what distance)?
    1 meter
  34. Digital display reflections and ambient light conditions are assessed with a ______.



    B. illuminance meter
  35. Luminance response can be tested with a
    1. near range photometer
    2. telescope photometer
    3. illuminating meter




    A. 1 or 2
  36. Most of the wuality control testing of digital display devices is performed with the use of ____ test patterns.



    B. AAPM TG-18
  37. The TG-18LPV/LPH test is used to evaluate _____.



    C. geometric distortion
  38. Specular reflection is reduced with the use of



    A. improved anti-reflective coating
  39. Specular reflection can be tested with the
    1. TG-18-AD pattern
    2. ambient light turned on
    3. ambient light turned off




    D. 1,2 &3
  40. Specular reflection can be assessed by only turning off the monitor in ambient light.
    true or false
    True
  41. The qualitative evaluation of luminance response is measured with the ____ test tool.



    C. TG18-CT
  42. Spatial resolution of the digital display monitor is done with the ____ test pattern.



    A. TG18-CX
  43. Display noise is measured using the ______ test pattern.



    C. TG18-AFC
  44. Daily evaluation of the monitors should be done with the _____ test tool.



    A. TG18-QC
  45. T/F- Daily quality control testing is done by the medical physicist.
    False
  46. A continuous quality control program for digital display devices should include
    1- acceptance testing of any new devices
    2- routine quality control
    3- periodic review of the program by a medical physicist
    4- annual and post-repair performace evaluations
    all answers
  47. T/F-Veiling glare can be evaluated with the VG18 testing pattern.
    true
  48. Names of Neil's cats
    • Clare
    • Boy
    • Elizabeth
    • Titan
Author
lunchbox
ID
70919
Card Set
Test1-230
Description
230 test 1
Updated