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Test your basic knowledge |
Radiology
Start Test
Study First
Subjects
:
health-sciences
,
radiology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing
clinical signs
genetic and somatic
potter-bucky diagram
screen film
2. What specific part of the eye is cloudy with a cataract
0.5mm
alopecia
lens
14 x 17
3. When processing film - the black areas are made of
metallic silver
density
15
afterglow
4. The smaller the focal spot
inverse square law
the sharper the radiograph
the higher the mA
grid cutoff
5. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine
cervical
collimator
non-screen
false
6. The shorter the wavelength of the x-ray - the more powerful the x-ray is
5
grid cutoff
medium film
true
7. Positive contrast agents appear what color on a radiograph
kVp
white
line focus principle
fogging
8. NYSVMS Facility Accreditation Standards
NYS Public Health Law #225
medium or par
grid cutoff
silver halide
9. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
density
false
silver halide
slow film
10. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
caudal border of scapula
decrease scatter radiation
10 cm
phosphor type
11. If the thorax is greater than or equal to....you should use a grid
electrons
15 cm
screens (phosphor layer)
narrow latitude film
12. Is to the right - it produces the electrons
inverse square law
somatic damage
lead cone and adjustable lead shutters
cathode
13. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
stops peristalsis
secondary
radiograph
joint mouse
14. Dislocations or separations
x-rays
luxations
visible light
sensitive cells
15. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
x-rays
increase density
short scale of contrast
grid
16. When this is exposed to x-rays - it will absorb photons (quanta) and give off photons of visible light which the film is sensitive to (give off blue light)
calcium tungstate
increase density
density
0.5mm
17. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
latent image
non-screen
cathode
aluminum
18. This is used to take 'real-time' radiographs - used a lot in horses
increase density
first trimester
collimator
fluoroscopy
19. If perforation is suspected - what compound do we use when radiographing
iodine
white and black are reversed
intensifying screens
no contrast
20. Extra pain is also called
hyperesthesia
large crystals - small crystals
metallic silver
grid focus
21. What is the difference between fluoroscopy and a regular radiograph
cathode
peak kilovoltage
white and black are reversed
idiopathic
22. Has a positive charge
heel effect
anode
paresis
indirect relationship
23. What type of bone tumors started elsewhere and spread to the location it was found
clinical signs
grid cutoff
visible light
secondary
24. We are supposed to use a grid if the abdomen is greater than or equal to......
10 cm
double mAs
mAs
alopecia
25. Types of grids
narrow latitude film
density
focused and unfocused or parallel
grey
26. Is responsible for the number or quantity of x-rays
phosphor layer dyes
cathode
mAs
no contrast
27. These crystals will turn white/clear when processing film
phosphor type
15% rule for kVp
unexposed AgBr
non-screen
28. Between density and kVp
thoracic(caudal) and lumbar
indirect relationship
lines per centimeter
density
29. What is the term for the spotty appearance on the film due to the large crystals in the screens
stops peristalsis
quantum mottle
mAs
milliamperage
30. Screens are classified according to
alopecia
speed
fixer
light source
31. Improper centering of grid is one reason for
quantum mottle
grid cutoff
false
focal spot
32. Film with: high detail - minimal graininess - increased exposure
slow film
large crystals - small crystals
black
nucleus pulposis
33. We should always try and stay How many feet from our x-ray machine
2
10 cm
6 ft
kVp
34. Lung tissue appears black (radiolucent) on a radiograph
6 ft
FFD
silver halide
true
35. Does move - has disks that rotate at high speeds - this helps spread out the heat that's produced as the electrons hit the focal spot
rotating anode
long scale of contrast
15 cm
true
36. Sheets of luminescent phorphor crystals on a cardboard or plastic base
alopecia
increase density
intensifying screens
increase scatter
37. Types of cell damage
genetic and somatic
large crystals - small crystals
decrease scatter radiation
white
38. What is the term for a negative contrast cystogram where we inject air
grid cutoff
radiographic detail
cathode
pneumocystogram
39. What needs to have high levels of x-ray absorbtion
grid cutoff
screens (phosphor layer)
milliamperage
idiopathic
40. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
white and black are reversed
density
white
first trimester
41. Old mAs x (new FFD)2 divided by (old FFD)2
highest mA and smallest time fraction
inverse square law
thoracic(caudal) and lumbar
focused and unfocused or parallel
42. Is the most common artifact in radiography
movement
dosimeter
metallic silver
NYS Public Health Law #225
43. Is on the anode and is angled at approximately 20 degrees from vertical
focal spot
density
effective focal spot
cassette
44. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
narrow latitude film
double mAs
arthritis
SOP
45. Affects both density and contrast
scatter radiation
non-screen
contrast
kVp
46. Extra vertebrae - scoliosis - fused vertebrae are all examples of
x-rays
abnormalities
grid cutoff
clinical signs
47. Is the measurement for the maximum energy available at that setting
5
quantum mottle
peak kilovoltage
15% rule for kVp
48. The greater the number of electrons released
narrow latitude film
the higher the mA
x-rays
double mAs
49. Incorrect grid focus is one reason for
15 cm
mAs
secondary
grid cutoff
50. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
grid focus
genetic and somatic
mAs
cathode