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RAD imaging > homework questions > Flashcards

homework questions Flashcards

1
Q

prime factors of qualitative control

A

kvp, filtration

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2
Q

mAs means

A

milliamaperage second

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3
Q

KVP means

A

Kilovoltage peak

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4
Q

which of the following material is most appropriate for filtration in the X-ray tube

a) mercury
b) Aluminum

A

b

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5
Q

Abbreviation for Aluminum and lead

A

AL/ Pb

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6
Q

write the name of the 2 target interactions that are responsible for the creation of the x-ray photons

A

brems/ characteraistics

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7
Q

the thickness of the absorbing material necessary to reduce the x-ray intensity to half of its original value its termed

A

half value layer

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8
Q

formula to determine the total filtration of an x-ray beam

A

total filtration+ inherent/added

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9
Q

radiographic units operating above 70 kvp must have a total filtration value of ?

A

2.5mm al/ eq

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10
Q

what substance is used fo the inherent filtration of an x-ray beam

a) aluminum
b) glass envelope / oil

A

b

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11
Q

write the name of the 2 primary interaction of x-ray photon with matter that predominate in the diagnostic imaging field

A

photoelectric / Compton scattering

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12
Q

between photoelectric and Compton scattering, which is most responsible for occupational exposure?

A

Compton scattering

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13
Q

write the range of kvp value that are employed for all diagnostic imaging procedures?

a) 30-90
b) 50-120
c) 60-180

A

b

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14
Q

factors that determine the production of scattered radiation include

A

field size, kvp, beam restriction

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15
Q

when involuntary motion must be considered, the exposure time may be cut in the half if the kilo voltage is

a) increased by 15 %
b) halved
c) doubled

A

a

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16
Q

the angle on the anode of an x-ray rube helps to insure that the majority of the x-ray photons produced at the target are

a) absorbed in the surface
b) directed towards the PT
c) scattered in all direction

A

b

17
Q

the negative electrode of an X-ray tube is commonly called?

A

cathode

18
Q

a reduction in the amount of scattered radiation in a radiographic image is likely from ?

a) increase in KVP
b) increase in collimation

A

b

19
Q

what percentage of electron stream energy is converted into x-ray

A

1%

20
Q

generally, at least what % of loss of bone mineral density has taken place before it can be seen radiograhically

A

50%

21
Q

osteoporosis A OR B

A

B

22
Q

CHF

A

A

23
Q

Ascites

A

A

24
Q

osteoblatic metastases

A

A

25
Q

Ileus

A

B

26
Q

Osteomalacia

A

B

27
Q

Empyema ( pus)

A

A

28
Q

Cardiomegaly

A

A

29
Q

COPD

A

B

30
Q

Emphysema

A

B

31
Q

Calcified stone

A

A

RAD imaging (7 decks)

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