MRI Flashcards
indications for MRI
soft tissue trauma
internal joint derangement
tumors
MRI signal intensities
bone
muscle
articular cartilage
fibrocartilage
ligaments
tendons
vessels
nerves
fat
what does MRI rely on the detection of
reemitted radiogrequency waves that are absorbed
T1 weighted images measure what
measure energy from structures that give up energy quickly (fat)
T1 weighted images have
good anatomic detail
tissues w/ high water content appear darker
T2 weighted images measure what
measure energy from structures that give up energy slowly (water)
T2 weighted images have
fat = darker
grainer, less spatial resolution
T2 weighted image good for what
identifying inflammation
how to view coronal images
from the front as if the viewer were facing the pt
how to view axial images
from below
how to view sagittal images
from left to right
sensitive to changes in what
bone marrow
dx of bone tumor, stress fx, AVN
can see what soft tissue injury
ligament & tendon
meniscus
alternative arthoscopic dx
disc path/neurologic impingement
what is MR arthography
MRI + arthrography
MR myelography can view what
spinal canal & subarachnoid space w/ high resolution MRI + strong T2 weighting
