Exams

Question 1

What is the purpose of the collimator shutters?

Answer 1

Absorb unneeded X-rays

Question 2

Which of the following is responsible for changing AC current to DC current ?

Answer 2

Rectifier

Question 3

What part limits the size of the useful x ray beam ?

Answer 3

The collimator

Question 4

Which of the following types of anodes should you use ?

Answer 4

Rotating

Question 5

How many rads are in a grey?

Answer 5

100

Question 6

Who is credited with the discovery of an X-ray?

Answer 6

WC roentgen

Question 7

From what does an electron cloud form?

Answer 7

The filament

Question 8

In what country was x ray discovered?

Answer 8

Germany

Question 9

What are examples of electromagnetic ionizing radiation ?

Answer 9

Gamma radiation and x ray

Question 10

What is the last thing you should do before pressing exp.. button?

Answer 10

Activate the rotor

Question 11

Where is oil normally found in the tube complex?

Answer 11

Between the tube and the tube housing

Question 12

What makes up the majority of the x ray beam (85%) ?

Answer 12

Bremsstrahlung radiation

Question 13

What is the international unit designation for the rad?

Answer 13

Gray

Question 14

What material is used for the Construction of most compensating filters ?

Answer 14

Aluminum

Question 15

Federal regulation requires how much filtration for an x ray machine that operates 70-100Kv

Answer 15

2.5

Question 16

Which type of X-ray is associated with biological effects?

Answer 16

Ionizing

Question 17

If you wanted to increase the number of photons reaching your film what should you do?

Answer 17

Increase the mas

Question 18

What would have the least fluctuation in the kV level ?

Answer 18

High frequency

Question 19

In checking you collimator, what percentage is the limit for inaccuracy?

Answer 19

2%

Question 20

The MA setting determines what?

Answer 20

The current going through the filament

Question 21

A tube warm up should be performed by using how many exposures ?

Answer 21

2

Question 22

The initials FFD TFD SID refer to what?

Answer 22

The distance between the source of the X-ray and the film

Question 23

Which type of dose is attributed to harmful effects from low levels of radiation ?

Answer 23

Genetic

Question 24

What increases patient exposure to radiation?

Answer 24

Split screens

Question 25

The large or small focal spot is usually set simultaneously with what?

Answer 25

The milliamperes

Question 26

What is the beneficial effect of radiation called?

Answer 26

Radiation hormesis

Question 27

If you had film that was too dark what would you do to solve the problem ?

Answer 27

Decrease the mas.

Question 28

What is the function of the anode ?

Answer 28

To stop the electrons

Question 29

Which part of the x ray is the target located in?

Answer 29

Anode

Question 30

Radon comes to use in what form?

Answer 30

Alpha particles

Question 31

The number of electrons is controlled by what?

Answer 31

Low voltage circuit

Question 32

When is a fetus most sensitive to radiation?

Answer 32

1st trimester

Question 33

Are X-rays stored in matter?

Answer 33

No

Question 34

About how much recursion of gonad exposure occurs with a P-A film compared to an A-P lumbar film ?

Answer 34

95%

Question 35

What is the best way to identify a patients film?

Answer 35

A flash on label before processing

Question 36

What is the most commonly used dosimeter?

Answer 36

A film badge

Question 37

The filament is surrounded by what structure?

Answer 37

The focusing cup

Question 38

The useful beam exits which part of the tube?

Answer 38

Window

Question 39

What propels the electrons in an x ray ?

Answer 39

The kV

Question 40

What produces thermionic emissions ?

Answer 40

The low voltage circuit

Question 41

Before moving the tube stand on the track what must be accomplished ?

Answer 41

The lock must be released

Question 42

Which how the following contributes the most radiation to a humans annual exposure ? Radon gas, sun and stars, diagnostic x rays, consumer products. Nuclear power plants.

Answer 42

Radon gas

Question 43

What part of the tube complex allows one to move the tube stand?

Answer 43

The tube track

Question 44

What is responsible for the anode heel effect?

Answer 44

The bevel of the anode

Question 45

How would you figure heat units ?

Answer 45

MA x time x kVp

Question 46

Which of the following is not required to appear on the legal id marker?

Answer 46

The patients age and or birth date

Question 47

What governs the speed of electrons ?

Answer 47

The kV

Question 48

What is the half value layer used for?

Answer 48

For filtration recommendation

Question 49

The main purpose of oil in the tube complex is for what?

Answer 49

Cooling the tube

Question 50

If a photon sailed through space at a high rate of speed which has went into and out of a patient. What would ne the next thing you encounter ?

Answer 50

A grid

Question 51

What does the 10 day rule concern?

Answer 51

Patients during a ten day period from the onset of menses

Question 52

Which part of the tube complex will you have to unlock and move to set the tube distance to the upright later lumbar film ?

Answer 52

The tube stand

Question 53

The boiling off of electrons is known as what?

Answer 53

Thermionic emission

Question 54

What is most helpful in producing a good quality A-P full spine X-ray?

Answer 54

Having the anode towards the cervical

Question 55

What is recommend for a full spine film?

Answer 55

Compensating filtration

Question 56

Which effect would a smaller anode angle have compared to a larger angle?

Answer 56

It would create a clearer image

Question 57

Is it true that some materials fluoresce when exposed to x ray?

Answer 57

Yes

Question 58

At a set FFD and film size the less collimating used the______the film will be?

Answer 58

Cleaner

Question 59

Positive beam limitation systems (PBL) would include what?

Answer 59

Semiautomatic collimation

Question 60

What would happen in you lengthened the time of exposure?

Answer 60

Increase the number of photons hitting the patient

Question 61

What year was x ray discovered ?

Answer 61

1895

Question 62

What is used to tell us that the x ray beam is centered to the part being radiographed.

Answer 62

The light and mirror

Question 63

Where is added filtration located?

Answer 63

On the port of the tube housing

Question 64

What characteristic does a dual focus tube have that a single focus tube doesn't?

Answer 64

Two filaments

Question 65

When taking a A-P full spine film of a young female what structure should you be most concerned with reducing exposure to prevent the unlikely possibility of cancer?

Answer 65

Breast