Radiology MCQs

General Radiology MCQs

1). The sensitive component of a CCD is a layer of ———
A. acrystalline allumium
B. amorphous silicon
C. c.crystalline silicon
D. all

2).During fluoroscopy, the x-ray tube is operated at _____________ mA
A. Less than 10
B. Less than 5
C. More than 10
D. more than 20
E. More than 5

3. The brightness gain of most image intensifier tube is in the range of
A. 1000-10000
B. 30,000-50,000
C. 4500-5000
D. 5000-30,000

4. The fraction of time that the x-ray tube is energized in DF is called as
A. duty cycle
B. extinction time
C. initial time
D. interrogation time
E. operational time

5. The video system used in conventional fluoroscopy line system usually is..
A. 256 lines
B. 520 lines
C. 525 lines
D. 530 lines

6. The ability of an image intensifier to increase image illumination is called
A. Automatic brightness
B. brightness gain
C. flux gain
D. illumination gain
E. magnification gain

7. If electron stimulate the output phosphor it release…
A. photon
B. proton
C. visible light
D. signals
E. both a and c

8. The modality use for dynamic internal structure imaging is…
A. mammography
C. fluoroscopy
D. CT scan

9. If pixel size increase in fluoroscopic matrix can reduce…
A. contrast resolution
B. spatial resolution
C. image quality
D. Both b and c

10. Oily non water soluble iodinated contrast media complication is…
A. peritonitis
B. aspiration
C. fat embolism
D. bowel obstruction

11. The fluoroscope was invented by
A. Thomas egad
B. Hollis potter
C. Jan Marconi
D. Thomas Edison
E. Wilhelm Roentgen

12. Example of iso osmolar contrast media is…
A. ultravist
B. isopaque
C. visipaque
D. urograffin
E. both a and b

13. ——–is the stage of processing during which the latent image is converted to visible image
A. developing
B. washing
C. fixing
D. drying

14———is the major factor used in controlling radiographic contrast?
A. kvp
B. m AS
C. both
D. distance

15. The entrance skin dose for an adult during fluoroscopy by averages is——
A. 30 to 50 mGyt/min
B. 40 to 50 mGy/min
C. 25 to 50mGy/min
D. 50 to 100mGy/min

16. Radiographs are visualized under illumination levels of——-
A. 1 to 100
B. 10 to 50
C. 100 to 1000
D. 1000 to 1500

17. The stage of processing during which the latent image is converted to a visible image is..
A. Rinsing
B. Drying
C. Washing
D. developing

18. The sensitivity of the screen film combination to x ray and light is..
A. Speed
B. Spectral matching
C. Contrast
D. Crossing over

19. The foundation of radiographic film is
A. Adhesive layer
B. Emulsion
C. Base
D. All of the above

20. It is the material with which x-ray or light photons from radiographic intensifying screen interacts
A. Emulsion
B. Base
C. Adhesive layer
D. None of the above

21. All of the following quality of ideal contrast except..
A. Low viscosity
B. Safety
C. Vascular pain
D. Low osmolarity

22. Sensitive component of CCD is a layer of..
A. Amorphous silicon
B. Crystalline silicon
C. Amorphous
D. Crystal iodide

23. The ability to distinguish between anatomical structures of similar subject contrast is determined by________
A. spatial resolution
B. dynamic range
C. contrast resolution
D. none the above

24. CCD device for medical imaging have_______
A. low SNR
B. moderate SNR
C. high SNR
D. none of above

25. Receive video signals from video camera and convert into digital data______
A. Automatic digital converter
B. Computer
C. Analog to digital converter
D. Both a and c

26. Electronic magnification capabilities is called________
A. brightness
B. magnified
C. z00m
D. none of the above

27. combine temporal and energy subtraction into a single image is called__________
A. temporal subtraction
B. energy subtraction
C. hybrid subtraction
A. D. dynamic subtraction

28. Phosphor continuously emit light after stimulation this process is called ——-
A. phosphorescence
B. fluorescence
C. illumination
D. brightness

29. Shorter exposure time reduces ——-
A. motion bluer
B. patient radiation dose
C. increase artifacts
D. both a and b

30. Iotrolon is the example of ——-
A. nonionic dimer
B. ideal contrast agent
C. both a and b
D. ionic dimer

31. The largest group of MRI contrast media is..
A. urograffin
B. canary
C. isopaque
D. gadolinium chelates

32-In radiography film between the emulsion and the base is a thin coating of material called
A. cohesive layer
B. adhesive layer
C. both a and b
D. none of the above

33. All causes the exposure artifact except_______
A. motion
B. poor screen contact
C. pi line
D. improper grid position

34. The number of light photon at the output phosphor to the number of x-rays at the input phosphor is the________
A. brightness gain
B. flux gain
C. magnification gain
D. none of the above

35. Intensifying screen surface coated with fluorescent crystals called..
A. silver halide
B. bromide
C. phosphor
D. cellulose

36. Image before processing is called…
A. radiograph
B. visible image
C. latent image
D. manifest image

37. In mid-1920 a safe base was introduced is known..
A. cellulose nitrate
B. polyester
C. cellulose triacetate
D. cellulose trinitrate

38. The emulsion consists of a homogenous mixture of…
A. gelatin
B. silver halide
C. bromide
D. both a and b

39. Polyester base was introduced in…
A. 1930s
B. 1920s
C. 1960s
D. 1970s

40. If X ray pass from a material can b appear on radiograph…?
A. Black
B. gray
C. radiolucent
D. Bright

41. Protective layer of intensifying screen is thick about..
A. A 5-7 micro meter
B. B 10-15 micro meter
C. C 10-20 micro meter
D. D 20-30 micro meter

42. If phosphor stimulate it emit…
A. electrons
B. protons
C. light
D. all of the above

43. Between the phosphor and base a layer called..
A. protective layer
B. adhesive layer
C. cohesive layer
D. reflective layer

44. The radiographic base approximately thick is..
A. 1mm
B. 2.5mm
C. 3mm
D. 5mm
E. 5.5mm

45. The percentage of x-ray absorbed by the screen called…
A. conversion efficiency
B. B, detective quantum efficiency
C. flux gain
D. illumination gain
E. magnification gain

46. All of the following is negative dye agent except..
A. barium sulphate
B. air
C. water
D. Carbon dioxide

47. Radiographic film has parts…
A. 1
B. 2
C. 3
D. 6

48. A static mark artifacts on film is…
A. exposure artifacts
B. processing artifacts
C. handling artifacts
D. none of the above

49. A radiographic study of biliary system is known…
A. cholangiography
B. cholecystography
C. cholegraphy

50. Film processing are …..Types
A. 1
B. 2
C. 3
D. 4

51 .the atomic no of barium is..
A. 58
B. 57
C. 56
D. 59

52. The monitoring and measuring of a person radiation is term as..
A. monomery
B. radiometry
C. dosimetry
D. all of the above

53. Pi lines result due to…
A. exposure artifacts
B. processing artifacts
C. handling and storage artifacts
D. none of the above

54. Radioactive material is used in
B. CT scan
C. Nuclear medicine
D. fluoroscopy

55. The thickness of the radiographic film is
A. 100 micro meter
B. 3.5 micro meter
C. 150-300 micro meter
D. 400-450 micro meter

56. Which of the following radiographic base is highly flammable..
A. cellulose nitrate
B. polyester
C. cellulose triacetate
D. cellulose trinitrate
E. silver iodide

57. Radiographic film should be store at the temperature of
A. 20c
B. 40c
C. 60c
D. 80c
E. 100c

58. High contrast film produce
A. light grey
B. dark gray
C. very black
D. bright
E. black and white

59. The fog level of unprocessed film is approx…
A. 0.2 mR
B. 1 mR
C. 2 mR
D. 3 mR
E. 8 mR

60. Contrast medium should not be injected if patient has creatinine level higher then
A. A 0.5mg/dl
B. B 1.0mg/dl
C. C 1.5mg/dl
D. D 3mg/dl
E. E 5mg/dl

61. Spatial resolution is limited by..
A. voxel
B. pixel
C. films
D. cassettes

62. Malabsorbtion is the indication of..
A. A.barium enema
B. barium swallow
C. C barium meal
D. D barium follow through

63. The procedure used for suspected tracheoesophageal fistula is
A. barium meal
B. barium follow through
C. barium enema
E. barium swallow

64. Difference in the OD between adjacent anatomical structure is..
A. spatial resolution
B. B, optical density
C. distortion
D. radiation quantity
E. contrast

65. The radiation quantity is measure in
A. mR/mAs
C. mGYt
D. mSv
E. energy

66. The misrepresentation of object size and shape on radiograph is…
A. optical density
B. contrast
C. filtration
D. Distortion

67. Polyester bases are thinner than triacetate basses
A. 3 micrometer
B. 60 micrometer
C. 75 micrometer
D. D.175 micrometer

68. Digital fluoroscopy produced a single video frame in….
A. 30 ms
B. 33 ms
C. 60 ms
A. D.100 ms

69. Which process swells the emulsion and permits the chemical to penetrate is
A. drying
B. fixing
C. developing
D. wetting
E. washing

70. Conversion efficiency of rare earth phosphors is approximately..
A. .10%
B. .20%
C. .30%
D. .50%

General Radiology MCQs Read More »

A small incision is made in the persons back and then insert a telescope viewing tube into the kidney the larger stone is broken up into small pieces and then removed out of the body this process is known as

b) Shock wave lithotripsy
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A small incision is made in the persons back and then insert a telescope viewing tube into the kidney the larger stone is broken up into small pieces and then removed out of the body this process is known as Read More »

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