Rad 3 Spring 05 Final

Question 1

Which of the following would produce a sharper (clearer) image?

a. non-screen film
b. faster intensifying screens
c. longer exposure time
d. shorter FFD

Answer 1

non-screen film

Question 2

In order to justify an automatic processor, 20-25 14x17 films should be run through in what time period?

a. per day
b. per week
c. per month
d. per year

Answer 2

per week

Question 3

If you temperature is too high in the dryer part of your automatic processor, which of the following would be the most likely?

a. films will be too dark
b. wilms will probably be discolored
c. films will probably have a shrunken base
d. films will probably have water spots

Answer 3

films will probably have water spots

Question 4

With manual processing after a film is first put into a solution what is the next recommended thing to do?

a. agitate it
b. keep it motionless
c. reload the cassette
d. turn on the light

Answer 4

agitate it

Question 5

If your developer smells like ammonia, what does it usually mean?

a. it is too strong
b. it is oxidized
c. it is too weak
d. it has fixer in it

Answer 5

it is oxidized

Question 6

Where would you place the wire mesh for a wire mesh test?

a. on the collimator
b. on the cassette
c. in the cassette
d. under the cassette

Answer 6

ON the cassette

Question 7

If you have two films of a patient that demonstrate a kissing artifact, why do you suspect it could be necessary to retake the films?

a. bc the films will have too much radiographic density
b. bc the area of contact will appear dull
c. bc the contact areas will discolor with time
d. be kissing artifacts can be mistaken for pathologies

Answer 7

bc kissing artifacts can be mistaken for pathologies

Question 8

Which of the following is NOT one of the criteria for holding a patient?

a. never use pregnant female to hold patient
b. the holder should wear protective apron and gloves
c. only employees should hold patient
d. the holder should be over 18 years old

Answer 8

only employees should hold patient

Question 9

What is the occupational annual dose limit for whole body exposure?

a. 0.5 rem
b. 5 rem
c. 15 rem
d. 50 rem

Answer 9

5 rem

Eyes - 15
Extremities - 50
Fetus - 1/2

Question 10

Let’s say you have just installed an automatic processor in you dark room. Since it is a big processor you actually want it to be out of your small darkroom. Which part of the processor must be in the darkroom?

a. the first set of squeegee rollers
b. the tempter control system
c. the electrical system
d. the transport rollers
e. the feed tray

Answer 10

the feed tray

Question 11

One sixteenth inch lead is equivalent to how many inches of concrete?

a. 2
b. 3
c. 4
d. 5

Answer 11

4

Question 12

Which combination of screen light and film color is preferred?

a. blue light and green film
b. green light and blue film
c. purple light and green film
d. green light and purple film

Answer 12

green light and purple film

Rare earth screen

Question 13

How will dirt on the intensifying screen appear on the exposed film?

a. white branching streaks
b. black branching streaks
c. white specks
d. black speck

Answer 13

white specks

STATIC = BLACK

Question 14

Which of the following would led to the least exposure of a patient to ionizing radiation?

a. a grid
b. an extremity cassette
c. a dual screen system
d. an underpart filter

Answer 14

a dual screen system

Question 15

Which speed is preferred in general spinal radiography with a rare earth screen?

a. 100
b. 200
c. 400
d. 800

Answer 15

400

Question 16

Having a thicker phosphor layer in your screens will have which effect?

a. produce a lighter image
b. produce a clearer image
c. make the screen slower
d. make the screen faster

Answer 16

make the screen faster

Question 17

Your x-ray service person has told you that he has just completed a “wire mess” test. In order to say something intelligent you have to thick back to what this test is for. What does it test?

a. light leaks in the cassettes
b. the speed accuracy of the screens
c. if the film and screens are spectrally matched
d. if there is good contact between the screens and film

Answer 17

if there is good contact between the screens and film

Question 18

About how many 14x17 films should be run through an automatic processor in a week before it is economically feasible?

a. 5-10
b. 15-20
c. 20-25
d. 40-45

Answer 18

20-25

Question 19

Sensitometry is a way to do which of the following?

a. to check collimation accuracy
b. to check consistency of processing
c. to measure the density of a film
d. to measure the radiation dose to sensitive tissue

Answer 19

to check consistency of processing

Question 20

When using the four basic densities of x-ray interpretation, which of the following is the SECOND LEAST dense?

a. air
b. metal
c. oil
d. water

Answer 20

oil

Least to greatest:

1. Air
2. Oil
3. Water
4. Metal
5. Heavy metal

Question 21

** You have a patient with a big belly, so you decide to use sectional x-rays. Which of the following would you use to get a good film?

a. an underpart filter
b. an air gap technique
c. a non screen cassette
d. a high kV, low mAs technique
e. a dual screen cassette with a grid

Answer 21

a dual screen cassette with a grid