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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. Must change if the FFD changes
cathode filament
lines per centimeter
false
mAs
2. The x-ray machine we've been using has a rotating anode
1/30
radiographic detail
true
fluoroscopy
3. With this procedure - no x-ray film is involved at all
idiopathic
fluoroscopy
true
effective focal spot
4. MAs for ANY part - when using a grid 3x= ?
0.5mm
x-rays
reflective layer
15
5. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS
decrease scatter radiation
grid cutoff
false
white
6. Infection of a disk - or bone near it
joint mouse
diskospondylitis
phosphor layer dyes
false
7. A living animal - with tissue densities such as fat - muscle - fluid - and air
abnormalities
latent image
long scale of contrast
15% rule for kVp
8. Tilting of the tube or grid is one reason for
slow
grid cutoff
focused and unfocused or parallel
grid focus
9. What is the term for the spotty appearance on the film due to the large crystals in the screens
short scale of contrast
quantum mottle
screens (phosphor layer)
double contrast
10. What are the 2 types of anodes
higher mA
stationary and rotating
scatter radiation
electrons
11. Redness of the skin
short scale of contrast
cervical
kVp or mAs
erythema
12. The type of collimator that we have here
grid efficiency
adjustable lead shutters
anode
paralysis
13. Is on the anode and is angled at approximately 20 degrees from vertical
focal spot
speed
caudal border of scapula
santes' rule
14. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
cassette
higher mA
screen film
inflammation an granuloma
15. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms
sensitive cells
alopecia
x-rays
increase scatter
16. KVp=(2x thickness of body part in cm) + 40
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183
17. The exact area of the anode that the electrons hit
15 cm
electrons
5
focal spot
18. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used
15 cm
true
decrease scatter radiation
screens (phosphor layer)
19. Loss of movement in legs (front and/or back)
white and black are reversed
osteomyelitis
paralysis
true
20. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)
rare earth elements
clinical signs
inflammation an granuloma
kVp or mAs
21. The effective focal spot is approximately 1/3 the size of the actual focal spot
erythema
screen film
reflective layer
true
22. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
cathode filament
14 x 17
intussusception
potter-bucky diagram
23. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?
white and black are reversed
direct relationship
sensitive cells
whiter
24. A grid must be used on the chest if it's 11cm thick
phosphor layer
alopecia
stops peristalsis
false
25. Outer layer of disk ( dries out and cracks and causes disk to herniate)
narrow latitude film
15 cm
true
annulus fibrosis
26. If barium leaks into the abdomen or lungs - it can cause what
inflammation an granuloma
idiopathic
screen film
direct relationship
27. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
fixer
aluminum
radiograph
reflective layer
28. Distance from the grid to the x-ray tube (36-40 inches)
grid focus
calcium tungstate
back scatter
large crystals - small crystals
29. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
reflective layer
intensifying screens
grid efficiency
kVp
30. The efficiency of this reflects light made by phosphors back towards the film
rapidly dividing
reflective layer
white
15% rule for kVp
31. Radiographic signs dont always agree with what
10 cm
clinical signs
line focus principle
latent image
32. To double the density
double mAs
radiographic detail
true
15% rule for kVp
33. DJD is also called
double mAs
focused and unfocused or parallel
fluoroscopy
arthritis
34. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton
screens (phosphor layer)
alopecia
false
short scale of contrast
35. The electrical current sent through the filament to cause this electron release is called
5
2
x-rays
milliamperage
36. Why do we not give atropine with a contrast radiograph
AgBr
focal film distance
stops peristalsis
anode
37. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
false
secondary
AgBr
FFD
38. Faster screens/less detail; slower screens/more detail
screens (phosphor layer)
true
large crystals - small crystals
true
39. Is the density difference between 2 adjacent areas on a radiograph
black
the sharper the radiograph
contrast
15% rule for kVp
40. X-ray gloves have to have....of lead equivalent
0.5mm
arthritis
contrast
non-screen
41. This stage of pregnancy is the most dangerous for the fetus
decrease scatter radiation
density
first trimester
anode
42. What is one of the most common area of occurance for spinal problems (15% dobermans)
diskospondylitis
electrons
sensitive cells
cervical
43. Rotating anode
decrease scatter radiation
0.25mm
osteomyelitis
sensitive cells
44. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
cathode
false
milliamperage
stationary anode
45. General purpose film - forgiving
inversely proportional
line focus principle
highest mA and smallest time fraction
wide latitude film
46. Collimator
caudal border of scapula
decrease scatter radiation
joint mouse
phosphor layer
47. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells
large crystals - small crystals
false
rapidly dividing
focal spot
48. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
line focus principle
focal spot
caudal border of scapula
anode
49. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the
true
genetic and somatic
line focus principle
highest mA and smallest time fraction
50. Lead equivalent for thyroid sheild
slow film
focal spot
direct relationship
0.5mm