Contrast Studies Flashcards
Radio opaque is positive or negative?
Positive
Types of positive contrasts?
Barium or iodine
Radiolucent is positive or negative?
Negative.
Types of negative contrasts?
Gas, co2
Frequently injected into veins to look for kidneys, heart etc.
Water soluble
Is sterile
Iodine
Used primarily for GI tract studies.
Barium
Why is it bad for barium to leak into the cavities?
The body sees it as a foreign body and attacks it
Can cause an embolism (block of an artery)
Air. (Negative contrast)
How do you prep for a GI study?
Empty GI tract (vomit, defecate, enema)
What would we look for during an esophagraphy?
Enlarged esophagus, function and motility
Can mix with food to ingest.
Barium
What does upper GI study focus on?
Stomach, small intestine
At what times do we want to take radiographs when doing an upper GI study?
0, 15, 30, 60, 90 minutes
What is the dosing rate of barium for upper GI?
4-8mg/kg
What can be mistaken for a foreign body like s ball?
Pylorus
What area does a lower GI study focus on?
Large intestine
What is evaluated during urinary contrast study?
Kidneys, stones, bladder, ureter, urethra
Analysis of the bladder.
Cystography
Using both positive and negative contrasts.
Double contrast study
Trauma we caused.
Iatrogenic
Adding dye to the spinal cord to view disks.
Myelography
To view a tract from a foreign body
Fistulography
Injecting contrast into the lungs.
Pneumoperitoneography
Two types of contrast mediums?
Radiolucent, radio opaque
