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ch 18 contrast study


2 types of contrast positive and negative
positive contrast white, high atomic #, uses iodinated and barium
negative contrast black, low specific gravity, gases, air, co2
barium sulfate white powder needs to be mixed, perpared colloid suspension, can be toxic
water soluble organic iodides gastrographin, not used anymore, ionic and non- ionic
double contrast administering both + and -, double contrast cytogram
preparation enema or fasted, radiograph before administered label with time and sequence
esophogram barium sulfate, contrast given orally, taken immediately
upper GI barium sulfate, orally or stomach tube, xray every 15 mins
barium enema colon, barium sulfate, rectally, fluoroscopy used, xrays taken once fully gone through
pneumocolon colon,room air, rectally, xray after given
+ contrast cystogram urinary, ultravist, urinary catheter, palpate bladder, xray once bladder is full
- contrast cytogram urinary, air, pt. in lateral recumbency
double contrast cystogram urinary, non-ionic, air, air through the urinary catheter, when bladder full
Created by: Jessica vet