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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. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units
rotating anode
0.25mm
movement
stationary anode
2. Is the electrical current that heats the filament
true
no contrast
double mAs
milliamperage
3. Negative contrast agents appear what color on a radiograph
fogging
indirect relationship
black
caudal border of scapula
4. Extra pain is also called
non-screen
hyperesthesia
stationary and rotating
increase density
5. KVp=(2x thickness of body part in cm) + 40
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6. The focused grid is upside down - is one reason for
clinical signs
grid cutoff
FFD
cathode filament
7. A layer of intensifying screen that reflects the light from the phosphor layer toward the film
radiographic detail
reflective layer
screens (phosphor layer)
paralysis
8. Redness of the skin
erythema
screens (phosphor layer)
high contrast
2
9. This gives you the desired mAs - and it gives less time for your patient to move
grid cutoff
fixer
highest mA and smallest time fraction
false
10. MAs for abdomen (standard mAs) x=?
grid cutoff
secondary
false
5
11. If the kVp is too high
non-screen
increase scatter
40
arthritis
12. What type of cystogram uses air and hypaque
AgBr
no contrast
slow film
double contrast
13. Is responsible for the number or quantity of x-rays
mAs
metallic silver
screens (phosphor layer)
paresis
14. Bone infection - also known as spondylitis
non-screen film
osteomyelitis
5
black
15. General purpose film - forgiving
nucleus pulposis
movement
wide latitude film
phosphor type
16. 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
cathode filament
anode
grid cutoff
iodine
17. Is the most common artifact in radiography
alopecia
grid cutoff
kVp
movement
18. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage
kVp
the higher the mA
intussusception
stationary anode
19. For bladder cystography - we use what contrast material instead of barium
screen film
hypaque
line focus principle
wobblers syndrome
20. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad
genetic damage
lens
screen film
focal spot
21. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate
FFD
santes' rule
iodine
genetic and somatic
22. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film
40
white
black
peak kilovoltage
23. Rotating anode
increase density
intussusception
primary
decrease scatter radiation
24. If the thorax is greater than or equal to....you should use a grid
radiograph
15 cm
grey
intussusception
25. A living animal - with tissue densities such as fat - muscle - fluid - and air
focal spot
long scale of contrast
short scale of contrast
collimator
26. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements
silver halide
afterglow
caudal border of scapula
large crystals - small crystals
27. What is the term for an unknown cause
15
idiopathic
silver halide
wobblers syndrome
28. Gelatinous center of disk - pinches spinal cord to cause herniated disk
the higher the mA
sensitive cells
nucleus pulposis
latent image
29. What type of film has the x-rays directly cause the latent image to be formed
heel effect
double contrast
non-screen
stationary anode
30. MAs for extremities
2
5
cassette
calcium tungstate
31. MAs for ANY part - when using a grid 3x= ?
15
2.5
SOP
focal spot
32. This is used to take 'real-time' radiographs - used a lot in horses
10 cm
whiter
fluoroscopy
cathode
33. The effective focal spot is approximately 1/3 the size of the actual focal spot
rapidly dividing
erythema
fogging
true
34. Screens are classified according to
speed
clinical signs
paralysis
5
35. In the dark room - the safe light (red light) needs to be at least how far away from the loading bench
latent image
4 ft
focal spot
metallic silver
36. Monitors personal exposure to radiation
mAs
clinical signs
latent image
dosimeter
37. The efficiency of this reflects light made by phosphors back towards the film
0.25mm
heel effect
reflective layer
abnormalities
38. The type of collimator that we have here
latent image
santes' rule
adjustable lead shutters
medium film
39. AgBr + light =
anode
calcium tungstate
screen film
electrons
40. AgBr + x-rays =
double contrast
rapidly dividing
true
non-screen film
41. Within the collimator outlines just how much is collimated
grey
light source
wobblers syndrome
mAs
42. Distance from the grid to the x-ray tube (36-40 inches)
x-rays
grid cutoff
grey
grid focus
43. The x-ray machine we've been using has a rotating anode
x-rays
lines per centimeter
potter-bucky diagram
true
44. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid
15 cm
joint mouse
intensifying screens
SOP
45. Is to the right - it produces the electrons
medium or par
cathode
radiographic detail
false
46. Increase mAs and kVp in order to...
stops peristalsis
true
increase density
grey
47. Is to the left - electrons bounce off it at a 20 degree angle
anode
spondylosis
contrast
6 ft
48. Film with: high detail - minimal graininess - increased exposure
inflammation an granuloma
slow film
lines per centimeter
reflective layer
49. To double the density
arthritis
caudal border of scapula
kVp
double mAs
50. Improper centering of grid is one reason for
primary
film cassette
focal spot
grid cutoff