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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 doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark
decrease scatter radiation
15 cm
caudal border of scapula
alopecia
2. Must be radiolucent
idiopathic
true
film cassette
inverse square law
3. AgBr + light =
heel effect
intensifying screens
medium or par
screen film
4. NYSVMS Facility Accreditation Standards
NYS Public Health Law #225
white
SOP
mAs
5. With the heel effect - more x-rays tend to be in the beam toward this end of the tube
back scatter
true
peak kilovoltage
cathode
6. Is located in a focusing cup made of molybdenum which has a high melting point and helps to direct the electrons produced toward the cathode
non-screen
cathode filament
high contrast
mAs
7. Within the collimator outlines just how much is collimated
quantum mottle
abnormalities
light source
paresis
8. Bone infection - also known as spondylitis
osteomyelitis
paralysis
grey
lead cone and adjustable lead shutters
9. A grid must be used on the chest if it's 11cm thick
fluoroscopy
false
phosphor type
increase density
10. A clear protective layer on radiographic film
idiopathic
non-screen film
supercoat
black
11. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc
true
aluminum
focal spot
afterglow
12. Aluminum filter
decrease scatter radiation
secondary
paralysis
latent image
13. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements
white
silver halide
no contrast
double contrast
14. A living animal - with tissue densities such as fat - muscle - fluid - and air
inversely proportional
secondary
long scale of contrast
slow film
15. Infection of a disk - or bone near it
density
14 x 17
diskospondylitis
screens (phosphor layer)
16. Must change if the FFD changes
light source
mAs
fast
cervical
17. Weakness
paresis
screens (phosphor layer)
density
NYS Public Health Law #225
18. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact
cathode
cassette
false
secondary
19. The efficiency of this reflects light made by phosphors back towards the film
high contrast
kVp
reflective layer
black
20. Faster screens/less detail; slower screens/more detail
cassette
arthritis
slow film
large crystals - small crystals
21. An abdominal radiograph should be taken at the peak of expiration
screens (phosphor layer)
true
lines per centimeter
contrast
22. What needs to have high levels of x-ray absorbtion
screens (phosphor layer)
inversely proportional
idiopathic
no contrast
23. Ideally is very small
cathode filament
heel effect
focal spot
false
24. Has a filament made of tungsten - due to the high melting point
cathode and anode
osteomyelitis
AgBr
screens (phosphor layer)
25. Is on the anode and is angled at approximately 20 degrees from vertical
kVp
grid cutoff
focal spot
long scale of contrast
26. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals
primary
annulus fibrosis
medium or par
phosphor layer
27. Incorrect grid focus is one reason for
1/30
santes' rule
grid cutoff
direct relationship
28. The layer of the film where the action occurs
AgBr
5
metallic silver
false
29. Increased crystal size.....
non-screen film
false
more light
supercoat
30. Less forgiving - high contrast - cannot tolerate changes in exposure or processing
the sharper the radiograph
grid efficiency
wobblers syndrome
narrow latitude film
31. Most commonly used film - compromise between graininess and speed (detail)
medium film
5
6 ft
Maximum Permissible Dose
32. Film with: high detail - minimal graininess - increased exposure
indirect relationship
phosphor layer dyes
slow film
mAs
33. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
reflective layer
40
true
10 cm
34. These crystals will turn white/clear when processing film
stationary and rotating
unexposed AgBr
cathode
10 cm
35. If the kVp is too high
increase scatter
arthritis
stationary anode
screens (phosphor layer)
36. A type of electromagnetic radiation which have a shorter wavelength than visible light
false
x-rays
light source
reflective layer
37. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?
1/30
focused and unfocused or parallel
kVp or mAs
anode
38. What are the 2 types of anodes
stationary and rotating
paralysis
paresis
rotating anode
39. If there's no object in the way of an x-ray - the picture would be
fixer
intensifying screens
white and black are reversed
black
40. When a body part is greater than or equal to.....you should use a grid
light source
10 cm
contrast
2
41. The back of the cassette is made of lead to decrease....
kVp
lines per centimeter
back scatter
increase scatter
42. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed
cathode filament
x-rays
non-screen
intussusception
43. The 2 types of collimators are
phosphor layer
lead cone and adjustable lead shutters
increase scatter
wobblers syndrome
44. Calcium tungstate - rare earth elements
visible light
mAs
screen film
phosphor type
45. What type of bone tumors started in the location they were first found
grid efficiency
2
alopecia
primary
46. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
the sharper the radiograph
intussusception
clinical signs
supercoat
47. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....
lines per centimeter
black
15% rule for kVp
cathode
48. Why do we not give atropine with a contrast radiograph
cathode
scatter radiation
stops peristalsis
quantum mottle
49. To utilize this - you position the thickest part of the animal towards the cathode end of the x-ray tube
heel effect
medium film
potter-bucky diagram
5
50. Lead equivalent for thyroid sheild
0.5mm
fast film
false
adjustable lead shutters
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