Radiology Flashcards
what lesion distribution is most common for aspiration pneumonia?
cranioventral
what lesion distribution is most common for non-cardiogenic pulm edema?
caudodorsal
what lesion distribution is most common for cardiogenic pulm edema?
peri-hilar to caudal
what are your differentials with an alveolar pattern in the lungs
pneumonia (aspiration, bronchopneumonia, hematogenous), edema (cardiogenic or non-c), hemorrhage (trauma or coagulopathy)
what can artificially create a linear interstitial pattern
expiratory or underexposed image
what lung pattern is seen first with heart failure
linear interstitial. quickly progresses to alveolar
what are differentials for a linear interstitial pattern
artifact, geriatric change, pulm edema, hemorrhage, pneumonia, neoplasia, fibrosis
what are differentials for a structured interstitial pattern
neoplasia or granulomatous (fungal dz)
what are your differentials for a bronchial lung pattern
bronchitis, feline asthma, pulm parasites
what are your differentials for a vascular pattern and which vessels are largest with each
heartworm dz (artery larger), left to right shunts (artery and vein large), venous congestion/L sided heart failure (vein larger)
what is a normal small intestine diameter for dogs and cats
dogs - <1.6x height of L5
cats - less than or equal to 12mm
what pattern will be seen with paralytic ileus
mild generalized dilation
what are your differentials for paralytic ileus
peritonitis, post-op abdomen, enteritis, pain, anticholinergic drugs, sedation/anesthesia, dysautonomia, GDV and mesenteric volvulus, electrolyte imbalance
what can cause focal paralytic ileus
pancreatitis
what pattern is seen with obstructive ileus
dramatic dilation with only the portion of the bowel cranial to the obstruction dilated (two populations of bowel)
