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Flashcards in Fall 07-08 Deck (24)
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1

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

diagnostic x-ray

2

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

Radon

3

what makes x-ray potentially dangerous

they are ionizing

4

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

radon

5

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

inhale them

6

the first radiographic print was on what body part?

the hand

7

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

Contrast

8

where would you apply the inverse square law

when changing the tube distance

9

the initials FFD TFD and SID refer to what

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

10

what does P in the kVp stand for?

Peak

11

the number of electrons is controlled by the

low voltage circuit

12

what connects the transformer with the tube?

the cables

13

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

99%

14

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

14 degrees

15

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

anode pitting

16

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

the anode

17

which structure is responsible for confining the cloud of electrons

the focusing cup

18

the purpose of the collimator shutters is to

absorb unneeded x-rays

19

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

the light and mirror

20

which is the most common reason that compensating filtration is used

the reduce film density

21

which of the following parts of the tube complex contains lead

the tube housing

22

what is the best way to identify patients films

a flash on label BEFORE processing

23

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

none

24

how many mrems have you been exposed to

100mrems