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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. When the density difference is great - there is
high contrast
false
decrease scatter radiation
grid cutoff
2. A grid must be used on the chest if it's 11cm thick
true
false
dosimeter
double mAs
3. Is the most common artifact in radiography
focal spot
genetic damage
wide latitude film
movement
4. These crystals will turn white/clear when processing film
heel effect
true
unexposed AgBr
peak kilovoltage
5. Radiograph of a dogs skeleton has a long scale of contrast
cathode and anode
rare earth elements
idiopathic
false
6. Lung tissue appears black (radiolucent) on a radiograph
true
anode
pneumocystogram
grid cutoff
7. Why do we not give atropine with a contrast radiograph
primary
stops peristalsis
double contrast
paralysis
8. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
supercoat
kVp or mAs
genetic damage
focal spot
9. Increase what value to penetrate thick body parts
focal spot
cathode filament
fast
kVp
10. Redness of the skin
genetic damage
grid cutoff
afterglow
erythema
11. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
intensifying screens
true
FFD
intussusception
12. Amount of radiation a person can recieve in a calendar year
speed
Maximum Permissible Dose
x-rays
focused and unfocused or parallel
13. What type of bone tumors started in the location they were first found
primary
metallic silver
false
movement
14. Is the electrical current that heats the filament
milliamperage
false
kVp or mAs
increase density
15. Screens are classified according to
speed
density
cathode
somatic damage
16. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
iodine
reflective layer
unexposed AgBr
cathode filament
17. Is responsible for the number or quantity of x-rays
mAs
radiograph
false
focal film distance
18. There are......intensifying screens within a cassette
genetic and somatic
2
potter-bucky diagram
NYS Public Health Law #225
19. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
grid cutoff
focal spot
afterglow
whiter
20. What are the 2 types of anodes
stationary and rotating
milliamperage
the higher the mA
movement
21. X-ray machines come with a set one - we cannot adjust it
focal spot
cathode filament
luxations
genetic and somatic
22. Distance from the grid to the x-ray tube (36-40 inches)
annulus fibrosis
grid focus
mAs
0.5mm
23. Has a positive charge
fixer
density
afterglow
anode
24. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)
grid
screen film
kVp or mAs
stationary anode
25. What type of film has the x-rays directly cause the latent image to be formed
false
visible light
indirect relationship
non-screen
26. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
4 ft
caudal border of scapula
decrease scatter radiation
phosphor type
27. Calcium 'bridges' between adjacent vertebrae
15 cm
rotating anode
spondylosis
screens (phosphor layer)
28. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
alopecia
erythema
stationary anode
grid cutoff
29. What is the term for an unknown cause
5
nucleus pulposis
idiopathic
grid cutoff
30. X-ray gloves have to have....of lead equivalent
cathode
0.5mm
highest mA and smallest time fraction
false
31. What type of film has no screens or film cassettes
screen film
40
non-screen
grid efficiency
32. If the x-ray tube is not 36-40 inches from the grid - this is called the
grid cutoff
5
paresis
1/30
33. If there's metal in the way of an x-ray - than no x-rays will get through and that part would be
screens (phosphor layer)
latent image
slow film
white
34. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
cathode
sensitive cells
non-screen
decrease scatter radiation
35. Increased crystal size.....
more light
long scale of contrast
visible light
screen film
36. NYSVMS Facility Accreditation Standards
kVp
density
rare earth elements
NYS Public Health Law #225
37. Is the density difference between 2 adjacent areas on a radiograph
reflective layer
contrast
focused and unfocused or parallel
false
38. Safe Operating Procedures
false
SOP
10 cm
non-screen
39. The layer of the film where the action occurs
non-screen
x-rays
AgBr
paralysis
40. A type of electromagnetic radiation which have a shorter wavelength than visible light
caudal border of scapula
iodine
cathode and anode
x-rays
41. What type of cystogram uses air and hypaque
double contrast
santes' rule
dosimeter
cathode
42. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
genetic damage
intussusception
afterglow
non-screen
43. Lead equivalent for thyroid sheild
highest mA and smallest time fraction
non-screen
arthritis
0.5mm
44. The back of the cassette is made of lead to decrease....
grid
10
back scatter
arthritis
45. What type of films need a lot more x-ray exposure and more time to expose them
false
primary
reflective layer
non-screen
46. The efficiency of this reflects light made by phosphors back towards the film
electrons
reflective layer
somatic damage
FFD
47. What needs to have high levels of x-ray absorbtion
screens (phosphor layer)
visible light
0.25mm
higher mA
48. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly
rapidly dividing
primary
screen film
grey
49. If there's bone in the way of an x-ray -. those parts would be
false
dosimeter
inversely proportional
whiter
50. The picture formed after the film has been exposed to x-rays and then processed into a visible image.
non-screen film
mAs
cathode
radiograph
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