Veterinary Radiography Ch 11
Technical artifacts and errors radiography in veterinary technology (4th ed. ) - Lisa M Lavin
- 1.Which of the following are means of eliminating artifacts due to motion?
- A.
Short time exposure, highest possible mA
- B.
Short time exposure, highest possible mA
- C.
Physical or chemical restraint
- D.
Both A and C
- 2.A radiograph has appropriate density and contrast. There is a black tree pattern present. What is the most likely cause of this artifact?
- A.
Patient motion
- B.
Hair in the cassette
- C.
Improper film handling
- D.
Fixer splashes on film before developer
- 3.What can the ardiographer do to prevent finger cresecent artifacts?
- A.
Handle the x-ray film by the edges only
- B.
Monitor the humidity in the developer room
- C.
Do not allow light to leak into the cassette
- D.
Do not allow two films to stick together
- 4.Which of the following can cause light exposure to the film?
- A.
A broken cassette that does not close completely
- B.
The film bin door is left open to some degree
- C.
A film box lid is loose or damaged
- D.
All of the answers are correct
- 5.How does spillage of contrast media on the cassette or tabltop cause artifact?
- A.
Causes overpenetration of the film in that area
- B.
Prevents x-rays from reaching the film properly
- C.
Causes linear dot pattern
- D.
Causes double exposure
- 6.If the cassette is not directly under the primary x-ray beam, how will the film look?
- A.
The part of the film not directly under the primary beam is white or unexposed
- B.
The part of the film not under the primary beam is black and unexposed
- C.
The exposed portion will be distorted
- D.
The exposed image will look as if two identical objects are exposed
- 7.What should the radiographer do if he or she suspects that the film-screen compination is inappropriate?
- A.
Keep a stock of every possible screen speed and try all of them
- B.
Keep a stock of every possible film speed and try all of them
- C.
Consult the manufacturer
- D.
In the future take radiographs without screens
- 8.If the radiographer has developer on his or her hands while loading and unloading the cassette, what artifact might be seen?
- A.
White marks
- B.
Nongeneralized black marks
- C.
Generalized image distortion
- D.
A yellow radiograph
- 9.What factor causes film fog?
- A.
Light leak in the darkroom
- B.
Incorrect safelight bulb wattage
- C.
Incorrect safelight filter
- D.
All of the answers are correct
- 10.Which of the following most commonly cause generalized heavy lines on a radiograph?
- A.
Grid problems
- B.
Roller marks from the processor
- C.
Both of these are correct
- D.
Non of these are correct
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