X-Ray Physics

Question 1

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

Answer 1

Better detail

Question 2

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

Answer 2

Collimation

Question 3

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

Answer 3

KVP

Question 4

A grid ____ patient dose and ____ image quality.

Answer 4

increases; increases

Question 5

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

Answer 5

Distortion

Question 6

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

Answer 6

Decreased magnification of the heart

Question 7

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

Answer 7

12:1 grid ratio

Question 8

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

Answer 8

Bremsstrahlung

Question 9

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

Answer 9

Exhausted developer

Question 10

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

Answer 10

Decrease OFD

Question 11

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

Answer 11

Compton

Question 12

Which of the following would not affect the developing process?

Answer 12

Temperature of the rinse water

Question 13

Increasing the kVp by ____% will double the density?

Answer 13

15

Question 14

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

Answer 14

decrease; double

Question 15

Screen-film contact is measured using the ____.

Answer 15

Wire mesh test

Question 16

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

Answer 16

Patient

Question 17

Solution temperatures that are too hot will ____ density.

Answer 17

Increase

Question 18

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

Answer 18

Rotating anode

Question 19

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

Answer 19

Filtration

Question 20

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

Answer 20

The focusing cup

Question 21

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

Answer 21

Increases patient dose

Question 22

Which of the following will give the best detail?

Answer 22

Small filament

Question 23

Which of the following best decreases the contrast?

Answer 23

High Kvp

Question 24

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

Answer 24

4 times the MAS

Question 25

Store the film/cassette vertically to avoid ____ damage.

Answer 25

Pressure

Question 26

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

Answer 26

Black and Branching

Question 27

Changes AC to DC

Answer 27

Rectifier

Question 28

Steps up or steps down the power

Answer 28

Transformer

Question 29

Beam of radiation loses energy as it passes thru matter

Answer 29

Attenuation

Question 30

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

Answer 30

Green or blue

Question 31

Nail marks on film appears as ____.

Answer 31

Creases