Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
when is MRI the best answer? |
usually for any CNS disease that is not ICH |
|
|
do we do MRIs with contrast? |
yes for the same reasons as with Ct scans too |
|
|
some cases when an MRI would be ordered:
Multiple sclerosis- shows Dawson fingers
Posterior fossa lesion- kid with non-comm hydrocephalus is likely to have a medulloblastoma or astrocytoma |
brainstem lesions- strokes
pituitary lesions, masses, adenomas etc. |
|
|
Best reason to get a bone MRI |
osteomyelitis |
|
|
other reasons to get an MRI |
soft tissue injuries like meniscal tears, ACLs etc. |
|
|
another big type of injury to use MRI for |
spinal cord and vertebral lesions/injuries |
|
|
3 big organs that we ultrasound a lot |
the GB and kidneys
then gyn organs like the uterus, ovaries, adnexae |
|
|
best test for a pancreatic head lesion |
endoscopic ultrasound |
|
|
also can localize |
biliary ductal disease and gastrinomas |
|
|
great functional test of the biliary system |
HIDA scan |
|
|
good senstive test to detect occult metastases in the bone |
bone scans
this is their major use. they can also visualize osteomyelitis but are not nearly as specific as MRI |
|
|
What is the use for a gallium scan? |
workup of fever of unknown origin
it follows iron metabolism because gallium is trasnported around by transferrin
can follow iron deposition in some cancers that could be causing fever, could show an infection with Listeria or other iron-loving organisms |
|
|
An indium scan is very similar but is better or |
abdominal origins of fever: it is a tagged WBC scan that can localize a hidden infection |
|
|
V/Q scan is no longer the |
standard of care for suspected pulmonary embolus |
|
|
What is the use of a MUGA scan? |
done before starting chemo because it's the most accurate test fo measuring ejection fraction and can follow the cardiomyopathy that a patient is developing very accurately |
