Radiology Lab

Question 1

What is the function of the lead blocker and what do you have to keep in mind when taking X-rays

Answer 1

The function is for identification of children and do not place any relevant patient body part in the corner

Question 2

What is the function of the foam pressure pads in the cassette

Answer 2

Ensure close contact of film screens

Question 3

What are two ways to break cassette

Answer 3

Physical damage, leakage of fluid into cassette

Question 4

What is the function of the intensifying screens and what are they contain

Answer 4

Convert x-ray it’s a photons that are responsible for most of the film exposure 95%. Contain phosphor crystals that is responsible for this conversion

Question 5

How do we clean and care for the cassettes or screens

Answer 5

Keep closed, free of dust hair or artifacts. Avoid scratching when inserted or removing filmed. Clean with mild soap and water

Question 6

What is important to know when selecting an appropriate screen

Answer 6

decision based on speed and efficiency

Question 7

What is the direct exposure film used for

Answer 7

Used if needed better detail better quality image. No cassette required

Question 8

How should film be stored and handled

Answer 8

In a box in vertical position

Question 9

What is KV P in which transformer does it require

Answer 9

Kilovoltage peak and a step up transformer

Question 10

What is mA and which transformer does it need

Answer 10

Milliamperage and step down transformer

Question 11

What is the function of the x-ray tube height adjustment lock

Answer 11

To prevent The tube from moving and allows you to convert from table top to cassette

Question 12

What is S I D

Answer 12

Source image distance

Question 13

How do you place the body in relation to the anode and cathode

Answer 13

Thicker portion of the body towards the cathode

Question 14

What are the three things that happens when an x-ray strikes an object

Answer 14

Transmission, scatter, absorption

Question 15

How many intensifying screens do you have per cassette

Answer 15

Two

Question 16

What do the intensifying Screens contain

Answer 16

Phosphor crystals

Question 17

What happens when phosphor crystals are hit by x-rays

Answer 17

They fluoresce

Question 18

What are the advantages of the automatic developer

Answer 18

Shorter time than manual development. Standardized so it is a consistent quality

Question 19

How do you keep the Rock rollers and guides clean in an automatic processor

Answer 19

Send a scout through to started. Use cleaning film to cover all rollers wait for a beep and then put the next one and

Question 20

How often do you replace the chemical solutions in an automatic processing

Answer 20

Once a month

Question 21

What are the four common dental films use and which two are used at Vanier

Answer 21

124. We used 2 for small dogs and cats and 4 for dogs

Question 22

Which side of the film is placed facing the x-ray tube

Answer 22

The white side towards the tube

Question 23

What is the purpose of the dimple in the film and which direction to place it with respect to the animal

Answer 23

The dimple helps identify where the film was. We place the dimple rostrally

Question 24

Can the dental X-ray beam be collimated

Answer 24

No it cannot

Question 25

On the control panel for the dental x-ray unit which buttons control the following settings: film type, time and KV P

Answer 25

Film type: people buttons
Time: film type settings
KVP: tooth settings

Question 26

What are the three steps to the developing process for the dental x-ray unit

Answer 26

Developer water and fix

Question 27

How long do you develop the film for

Answer 27

30 seconds

Question 28

How long do you rinse the film for

Answer 28

Three shakes

Question 29

How long do you fix the film for

Answer 29

60 seconds

Question 30

Within the protective cover of the film which one is the actual film

Answer 30

The middle one

Question 31

What are the two reflective sheets around the film

Answer 31

Lead foil backing to reduce scatter radiation

Question 32

Why do you do quality-control for film

Answer 32

To minimize radiation exposure to patients and personal. To produce good quality radiographs. To decrease number of repeated films

Question 33

Name three functions of the Cassatt

Answer 33

Rigid lightproof and prevent exposure to light but allow x-rays to penetrate. Film holder. Contains intensifying screens that convert x-rays in the visible light