X-Ray Physics Flashcards Preview

Boards - 2, 3 & PT > X-Ray Physics > Flashcards

Flashcards in X-Ray Physics Deck (31):
1

What is the reason to incorporate the use of a small focal spot?

Better detail

2

The best way to prevent scatter radiation from reaching the patient?

Collimation

3

Which of the following in inversely related to contrast of the x-ray?

KVP

4

A grid ____ patient dose and ____ image quality.

increases; increases

5

Making sure the body part is parallel to the film results in decreased ____.

Distortion

6

Chest films are taken at 72" SID so that ____ occurs.

Decreased magnification of the heart

7

Which of the following procedures is necessary when taking a LCN radiograph?

12:1 grid ratio

8

When the useful beam gets slowed down because it interacts with the target nucleus it is termed ____ radiation.

Bremsstrahlung

9

What causes an x-ray to become brown in color?

Exhausted developer

10

Which of the following changes should be made to decrease magnification?

Decrease OFD

11

Which of the following is the primary form of scatter radiation?

Compton

12

Which of the following would not affect the developing process?

Temperature of the rinse water

13

Increasing the kVp by ____% will double the density?

15

14

Utilizing a high kVp technique would ____ the contrast and ____ the density.

decrease; double

15

Screen-film contact is measured using the ____.

Wire mesh test

16

The greatest amount of scatter radiation when taking an x-ray is produced by the ____.

Patient

17

Solution temperatures that are too hot will ____ density.

Increase

18

Which of the following would NOT affect the quality of x-rays produced?

Rotating anode

19

Which part of the x-ray machine does not allow low energy rays to get to the patient, thereby limiting scatter radiation?

Filtration

20

When taking an x-ray where does thermionic emission occur?

The focusing cup

21

Which of the following is one of the side effects of using a grid when taking an x-ray?

Increases patient dose

22

Which of the following will give the best detail?

Small filament

23

Which of the following best decreases the contrast?

High Kvp

24

If the focal film distance in doubled, what must you do to obtain a quality radiograph?

4 times the MAS

25

Store the film/cassette vertically to avoid ____ damage.

Pressure

26

Static electricity produced when removing the film quickly from cassette can cause ____ and ____ lightning like lines on the film.

Black and Branching

27

Changes AC to DC

Rectifier

28

Steps up or steps down the power

Transformer

29

Beam of radiation loses energy as it passes thru matter

Attenuation

30

____ or ____ tint is added to the base of the x-ray film to reduce glare?

Green or blue

31

Nail marks on film appears as ____.

Creases