Fall 07-08 Flashcards

1
Q

which is the largest contributor to the average persons annual exposure from man made sources

A

diagnostic x-ray

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2
Q

in the average which of the following accounts for over 50% of the typical person’s annual radiation exposure

A

Radon

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3
Q

what makes x-ray potentially dangerous

A

they are ionizing

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4
Q

which of the following travels at less than the speed of light

A

radon

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5
Q

alpha particles are most harmful in people when they do what with them

A

inhale them

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6
Q

the first radiographic print was on what body part?

A

the hand

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7
Q

kV is the primary controlling factor for which of the following?

A

Contrast

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8
Q

where would you apply the inverse square law

A

when changing the tube distance

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9
Q

the initials FFD TFD and SID refer to what

A

the distance between the source of the x-ray and the film

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10
Q

what does P in the kVp stand for?

A

Peak

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11
Q

the number of electrons is controlled by the

A

low voltage circuit

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12
Q

what connects the transformer with the tube?

A

the cables

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13
Q

about what percent of the energy from the process of producing x-rays is given off as heat

A

99%

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14
Q

which is the minimum anode angle that can be used if you were going to take a 14 x 36 full spine film?

A

14 degrees

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15
Q

if you looked into the port of a used x-ray tube and saw that the entire surface of the anode had bumps what would best describe its condition

A

anode pitting

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16
Q

when x-rays are produced which of the following is responsible for the true attenuation of any part of the x-ray beam

A

the anode

17
Q

which structure is responsible for confining the cloud of electrons

A

the focusing cup

18
Q

the purpose of the collimator shutters is to

A

absorb unneeded x-rays

19
Q

what is used to tell us that the x-ray beam is centered to the part being radiographed

A

the light and mirror

20
Q

which is the most common reason that compensating filtration is used

A

the reduce film density

21
Q

which of the following parts of the tube complex contains lead

A

the tube housing

22
Q

what is the best way to identify patients films

A

a flash on label BEFORE processing

23
Q

an acute exposure of four rads would probably have which effect on pregnancy females fetus

A

none

24
Q

how many mrems have you been exposed to

A

100mrems