Quiz 1&2

Question 1

X-rays are a form of

Answer 1

Electromagnetic radiation

Question 2

What is the majority of energy produced in the x-ray tube

Answer 2

Heat

Question 3

The anode consists of

Answer 3

Tungsten Target

Question 4

Rotating anodes cause an increase intensity of the x-ray beam on the cathode side. This is called

Answer 4

Anode Heel Effect

Question 5

The cathode provides

Answer 5

electrons

Question 6

Electron

Answer 6

particle that is negatively charged and travels around the center of an atom

Question 7

Frequencey

Answer 7

Number of cycles of the wave that pass a stationary point per sec

Question 8

Wavelength

Answer 8

Distance between 2 consecutive corresponding points on a wave

Question 9

Why is it important that x-rays are created in a vacuum

Answer 9

prevent dust particles from interfering in production

Question 10

What does milliamperage (mA) control

Answer 10

1. number of electrons boiled off
2. number of x-rays produced
3. degree of blackness

Question 11

What does kV control

Answer 11

1. penetrating power
2. contrast
3. shades of gray

Question 12

Select all the tissues that are particularly susceptible to radiation damage

Answer 12

1. skin
2. blood

Question 13

The best place to wear your dosimeter badge is under your lead apron during radiograph procedures.

Answer 13

False

Question 14

What is the MPD for occupationally exposed people?

Answer 14

5 rem

Question 15

Where does radiation exposure come from?

Answer 15

x-ray tube head

secondary beam

Question 16

An overexposed film will be too light.

Answer 16

False

Question 17

Which is not a physical property of X-rays?

Answer 17

x-rays travel in a wave

Question 18

The purpose of a grid is to:

Answer 18

absorb scatter and non-image forming x-rays

Question 19

Order the density of the following tissues from least dense (1) to most dense (5)

Answer 19

1. Air
2. Fat
3. Water/muscle
4. Bone
5. Metal

Question 20

As the focal film distance decreases, the intensity of the x-rays increases. This is called

Answer 20

inverse square law

Question 21

What is the primary influence contrast?

Answer 21

kVp

Question 22

Foreshortening

Answer 22

when the object in not parallel with the film

Question 23

Elongation

Answer 23

when beam is at an angle to the object

Question 24

Magnification

Answer 24

when the object film distance is increased

Question 25

Distance from x-ray tube to Image detector

Answer 25

SID

Question 26

Quantity of x-rays

Answer 26

mA

Question 27

Distance from patient to image detector

Answer 27

SOD

Question 28

Penetration of x-rays

Answer 28

kVp

Question 29

Select all the things that affect radiographic detail:

Answer 29

focal film distance

patient movement

Question 30

The grid is located between the x-ray tube and the patient.

Answer 30

False

Question 31

Special radiographic procedures are often taken in place of routine survey radiographs.

Answer 31

False

Question 32

Which is a contraindication of using barium for GI studies?

Answer 32

suspected perforation of GI tract

Question 33

Fistulography

Answer 33

evaluation of fistulous tracts

Question 34

Arthrography

Answer 34

evaluation of the joints

Question 35

Myelograpy

Answer 35

evaluation of the spinal cord

Question 36

Angiography

Answer 36

evaluation of the heart and surrounding vessels

Question 37

Which contrast media is used for myelograms?

Answer 37

soluble nonionic iodine

Question 38

Which is the best procedure for radiographing the abdomen when it has a significant difference in density between it’s thickest and thinnest areas?

Answer 38

take 2 separate exposures according to the difference measurements

Question 39

Which way should the tube head be directed, if excessive elongation occurs with dental x-rays?

Answer 39

More toward the sensor

Question 40

What is the goal for dental imaging?

Answer 40

get a complete image of the root