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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. Is responsible for the number or quantity of x-rays
iodine
highest mA and smallest time fraction
mAs
cathode
2. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped
true
large crystals - small crystals
afterglow
false
3. 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
non-screen
true
rotating anode
dosimeter
4. If barium leaks into the abdomen or lungs - it can cause what
white and black are reversed
kVp
non-screen film
inflammation an granuloma
5. With this procedure - no x-ray film is involved at all
fast film
double contrast
idiopathic
fluoroscopy
6. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements
true
grid focus
silver halide
15 cm
7. Sheets of luminescent phorphor crystals on a cardboard or plastic base
reflective layer
10 cm
intensifying screens
1/30
8. We should always try and stay How many feet from our x-ray machine
1/30
40
stops peristalsis
6 ft
9. If the kVp is too high
increase scatter
cathode filament
medium or par
mAs
10. When.....collide with the anode - 99% of energy is released in the form of heat - and 1% of energy is in the form of x-rays
electrons
black
idiopathic
high contrast
11. Is the measurement for the maximum energy available at that setting
peak kilovoltage
intussusception
AgBr
stationary and rotating
12. If there's far or muscle in the way of an x-ray - those parts would be
visible light
grey
stationary anode
paralysis
13. If the thorax is greater than or equal to....you should use a grid
focal spot
lead cone and adjustable lead shutters
15 cm
hyperesthesia
14. MAs for abdomen (standard mAs) x=?
intensifying screens
non-screen
scatter radiation
5
15. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
more x-rays produced
lines per centimeter
true
anode
16. NYSVMS Facility Accreditation Standards
increase scatter
x-rays
NYS Public Health Law #225
screen film
17. What must have little or no 'afterglow'
more light
true
screens (phosphor layer)
black
18. Give a 25% barium solution for upper GI series - and give At what dose?
the higher the mA
0.5mm
highest mA and smallest time fraction
3cc/#
19. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
focal spot
milliamperage
FFD
the higher the mA
20. What needs to have high levels of x-ray absorbtion
adjustable lead shutters
non-screen
screens (phosphor layer)
true
21. Extra pain is also called
grid cutoff
mAs
inversely proportional
hyperesthesia
22. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas
mAs
true
focal film distance
fast
23. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
stops peristalsis
inverse square law
light source
rapidly dividing
24. Calcium tungstate - rare earth elements
more light
rapidly dividing
phosphor type
screen film
25. Is to the right - it produces the electrons
false
cathode
decrease scatter radiation
phosphor layer
26. Film with: high detail - minimal graininess - increased exposure
caudal border of scapula
silver halide
14 x 17
slow film
27. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
stationary anode
focal spot
NYS Public Health Law #225
x-rays
28. Why do we not give atropine with a contrast radiograph
stops peristalsis
15 cm
0.5mm
grid cutoff
29. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced
spondylosis
screen film
mAs
slow film
30. The greater the number of electrons released
the higher the mA
non-screen
40
medium film
31. A living animal - with tissue densities such as fat - muscle - fluid - and air
long scale of contrast
0.25mm
white
kVp
32. The back of the cassette is made of lead to decrease....
black
back scatter
collimator
focal spot
33. Most commonly used film - compromise between graininess and speed (detail)
clinical signs
decrease scatter radiation
medium film
indirect relationship
34. Areas on film that should be black but come out grey - due to storage
supercoat
fogging
iodine
false
35. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation
thoracic(caudal) and lumbar
screen film
cathode
the sharper the radiograph
36. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
joint mouse
more x-rays produced
scatter radiation
potter-bucky diagram
37. To utilize this - you position the thickest part of the animal towards the cathode end of the x-ray tube
large crystals - small crystals
heel effect
focal spot
15 cm
38. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
direct relationship
cathode
pneumocystogram
heel effect
39. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
40
inverse square law
screen film
true
40. Tilting of the tube or grid is one reason for
inversely proportional
AgBr
grid cutoff
alopecia
41. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base
clinical signs
mAs
intensifying screens
luxations
42. The shorter the wavelength of the x-ray - the more powerful the x-ray is
true
collimator
dosimeter
high contrast
43. Redness of the skin
4 ft
erythema
40
afterglow
44. On a lateral view of the chest the aorta is dorsal to the caudal vena cava
true
rare earth elements
screen film
cathode
45. When more electrons hit the focal spot on the anode
focal film distance
focal spot
radiographic detail
more x-rays produced
46. General purpose film - forgiving
abnormalities
x-rays
wide latitude film
screen film
47. Film with: ultra speed - grainier image - less exposure needed
fast film
15 cm
phosphor layer dyes
mAs
48. The focused grid is upside down - is one reason for
stops peristalsis
false
grid cutoff
sensitive cells
49. If the kVp is too low
3cc/#
no contrast
peak kilovoltage
grid focus
50. What specific part of the eye is cloudy with a cataract
lens
radiographic detail
cathode filament
thoracic(caudal) and lumbar