Rad 1 Quiz 1 Review Flashcards
What is wrong?
Under collimated; fix by collimating to size
What is wrong?
Fix?
Overcollimated
Fix by opening up collimation to film size, it will darken the film
What procedure was used?
Split screens (this increases radiation to patient)
What’s wrong?
Tube/CR (central ray) is too LOW
What type of gonad shield is used?
Shadow shields (note the fuzzy borders)
What’s wrong?
Gonad shield is too high
Note: type of gonad shield is a “contact” shield b/c sharp borders
What’s wrong?
Patient motion- needs to be re-shot
What’s wrong with Left? Right?
Right: filter used to fix (filter lower part of T-spine bottom -> up)
Left: no filter usedàneeds to use compensating filter
What’s wrong?
Tube shift (note how spine is centered)
What’s wrong?
Need to take the filter out and filter bottom -> up
Also note: a straight edge filter was used
What’s wrong?
Marker is over anatomy
What’s wrong?
Patient is in motion(blurry) and patient is in rotation( non superimposed appearance of the posterior zygapophysis) retake radiograph
What’s wrong?
Need to filter top -> bottom
What’s wrong?
Split screens were used (should not be used-it overexposes patient)
What needs to be done to fix this film?
1) film is underexposed -> ↑ tube output
2) filter top -> down
3) move marker off anatomy and put on correct side
What needs to be done?
↑ tube output and filter bottom -> up
Why don’t we see blood vessels?
B/c lungs are in motion/person is breathing
***it would be a good idea to filter bottomàup
What’s wrong?
Collimated too tightly; unequal collimation due to:
1) CR/tube too high; 2) tube shift to the left
What artifact do you see?
Hair extensions contrasted w/ air
What’s wrong?
Tray/film was not pushed in the grid cabinet all the way (the film size is 7”x17”)
What needs to be done?
↑ tube output; lower filter
What’s wrong?
ID marker was flashed twice
What needs to be done?
Filter bottom -> up; open collimation (b/c anatomy is cut off)
What’s wrong?
Tray/film not pushed in all the way (14”x36” film)
What do you see?
Split screens (not good to use b/c unneccesary exposure to patient)
What’s wrong?
- Film and tube are too high
- ID marker is blocking anatomy
What needs to be done?
Filter bottom -> up
What type of gonad shield is used?
Shadow shield (blurry edges) is over anatomy
What’s wrong?
Tray/film is not pushed in all the way
What’s wrong?
Patient is too FAT -> need to lay them recumbent
What’s wrong?
This is not compensating filtration problem, this is an equipment problem. Anode heel effect.
Left - anode up cathode down- correct
Right- cathode up anode down
What’s wrong?
Patient was in motion
What type of gonad shield is used?
Contact gonad shield
What’s wrong?
Not a legal marker -> stick on ID label done after processing; & no doctors name or location
What’s wrong?
Marker is over anatomy
What is the artifact?
button
What’s wrong left? Right?
Left = CR/tube too high Right = film too high
What’s wrong?
Tube/CR too high; unequal collimation
What’s wrong?
Contact shield over anatomy
What’s wrong?
Film is too low
What’s wrong?
CR/tube too high
What’s wrong?
Film not pushed in all the way (7x17” film)
