Quiz 1 Flashcards
What’s wrong with the image?
Under Collimated; fix by collimating to part size
What’s wrong with the image?
Overcollimated
Fix by opening the collimation to film size; this will make the film darker
What proceedure was used?
Split Screen; this increases patient radiation exposure
What’s wrong with the image?
Tube/Central Ray is too low
What type of gonad shield is used?
Shadow shield; known by fuzzy borders
What’s wrong with the image?
Gonad shield is too high (blocking anatomy)
*Side note: type of shield is contact shield
What’s wrong with the image?
Patient moved, needs to be reshot
(known because of the blurry anatomy)
What was done to the left image?
What was done to the right image?
Left: no filter was used, needs to compensating filter
Right:Filter was sued to fix the image (filter lower part of throacic spine bottom - up)
What’s wrong with the image?
Tube Shift; we know this because the spine is centered
What’s wrong with the image?
Need to take the filter out and filter bottom - up
Filter used: Straight edge
What’s wrong with the image?
Marker is over anatomy
What’s wrong with the image?
Patient is in motion, and patient is in rotation; need to retake
(We know this because the image is blurry, and you can see non-superimposed posterior zygapophyseal joints)
What’s wrong with the image?
Need to filter top to bottom
What’s wrong with the image?
Split screens were used (should not be used; it overexposes the patient)
What needs to be done to fix this film?
1) film is underexposed - increase tube output
2) filter top to bottom
3) move the marker off the anatomy and put on correct side
What needs to be done to this image?
Increase tube output and filter bottom to top
Why don’t we see blood vessels in this film?
Because the lungs are in motion
What’s wrong with this image?
1) collimated too tightly
2) uneven collimation due to tube too high and a tube shift to the left
What artifact do you see on the film?
Hair extensions contrasted with air
What’s wrong with the image?
Tray/film was not pushed in the grid cabinet all the way
(anatomy is against the edge of the film; therefore anatomy is not centered on the film so film is not centered on grid cabinet)
What needs to be done?
Increase tube output, lower filter
What’s wrong with the image?
ID marker was flashed twice
What needs to be done to correct this film?
Filter bottom - up; open collimation
What’s wrong with the image?
Tray/film is not pused in all the way
What do you see?
Split Screens
What’s wrong with the image?
1) Film AND tube are too high (not seeing all anatomy)
2) ID marker is blocking anatomy
What needs to be done?
Filter bottom to top
What type of gonad shield is used?
Shadow shield (blurry edges)
What’s wrong with the image?
Tray/film is not pushed in all the way
What’s wrong with the image?
The patient has a lot of fat; needs to lay recumbent
What’s wrong with the image?
Equipment problem: Anode heel effect
Left: Anode up, cathode down (CORRECT)
Right: Cathode up, anode down (INCORRECT)
What’s wrong with the image?
Patient was in motion
What type of gonad shield is this?
Contact shield
What’s wrong with the image?
Not a legal marker
What’s wrong with the image?
Marker is over the anatomy
What artifact do you see in the image?
button
What’s wrong with these two images?
Left: CR/tube too high
Right: Film too high
What’s wrong with the image?
Rube/CR too high, unequal collimation
What’s wrong with this image?
Contact shield over anatomy
What’s wrong with this image?
Film is too low
What’s wrong with this image?
CR/Tube is too high
What’s wrong with this image?
Film not pushed in all the way
