Rad 3 Spring 05 Final Flashcards
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
non-screen film
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
per week
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
films will probably have water spots
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
agitate it
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
it is oxidized
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
ON the cassette
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
bc kissing artifacts can be mistaken for pathologies
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
only employees should hold patient
What is the occupational annual dose limit for whole body exposure?
a. 0.5 rem
b. 5 rem
c. 15 rem
d. 50 rem
5 rem
Eyes - 15
Extremities - 50
Fetus - 1/2
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
the feed tray
One sixteenth inch lead is equivalent to how many inches of concrete?
a. 2
b. 3
c. 4
d. 5
4
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
green light and purple film
Rare earth screen
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
white specks
STATIC = BLACK
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
a dual screen system
Which speed is preferred in general spinal radiography with a rare earth screen?
a. 100
b. 200
c. 400
d. 800
400
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
make the screen faster
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
if there is good contact between the screens and film
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
20-25
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
to check consistency of processing
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
oil
Least to greatest:
- Air
- Oil
- Water
- Metal
- Heavy metal
** 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
a dual screen cassette with a grid
