Flashcards in Radiologic Studies of the GI Tract Deck (23):
What can cause small bowel obstruction in a patient post-surgery?
Why is there an increased risk of DVT in pregnant patients?
The IVC can be occluded
In the lateral decubitus position, check for air _____________.
lateral to the large intestine
Calcified gallbladder indicates _____________.
What is a neobladder?
In a patient post-cystectomy (bladder removal), surgeons can create a bladder out of bowel.
In the small intestine, the ____________ go all the way through, while in the large intestine the _________ do not .
plicae circulares; haustrations
What is emphysematous cholecystitis?
Air in the wall of the gallbladder
What might you notice on a CT of someone with acute bowel ischemia?
Blocked vessel (if the CT has contrast), meaning no enhancement
Do not give barium to someone with _______________.
- bowel obstruction, because the colon will absorb water and the barium will become concentrated
- bowel perforation, because the colon will leak barium into the peritoneum
Barium swallows can reveal _______________.
The fundus is a ___________ structure.
posterior (so it will be full of air when the patient is prone)
Enteroclysis involves _________________.
injecting air and methylcellulose – provides a greater amount of detail than small-bowel follow through, but is more time and labor intensive
Describe a good system of approaching films.
(1) Assess patient data: is it the correct patient? When was it taken? Are there past films for comparison?
(2) Assess the technical aspects of the film: in what position is this taken? Is the area of concern in the film? Is it a good quality?
(3) Assess and describe the anatomy: pay attention to soft tissue, alignment, and bones – particularly regarding changes from past films.
(4) Create a differential.
What is the 3, 6, 9 rule?
The small intestine should be no larger than 3 cm. The transverse colon should be no larger than 6 cm. And the cecum should be no larger than 9 cm.
What disorders can IV contrast mask?
Renal stones, calcifications, and hemorrhage
Prior to giving IV contrast, screen _________ in high-risk patients.
Have a patient __________ if you're taking an x-ray for bowel obstruction.
A cratered esophagus on barium swallow is indicative of _______________.
Candida infection in the esophagus
Hepatocellular carcinoma receives its feeding from _____________ blood.
Gadolinium has ________ risk.
What is the best technique for detecting kidney stones?
CT without contrast
X-ray plain films are best for detecting _____________.
perforation (shown by free air) and impaction