Special imaging Part 2 &3

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Terms in this set (...)

CT
visualizes occult fx, bone fragment location, intra- articular fractures, calcified soft tissue lesions, brodies abscess, traumatic lesions
when would you take a ct
ANYTHING IN THE LUNG
aneurysms
spina bifida, spondylosis, spinal stenosis, lateral recess stenosis
what is CT measured in?
housenfield units
what does MRI provide optimal visualization of?
spatial relationships and distinct ST contrast to view: IVD, spinal cord, meninges, bone, meniscus, ligaments
does MRI use radiation?
NO
what is MRI best for?
multiple sclerosis for plaqueing in the brain and spinal cord
ALL AVN
T1
fat
T2
water
DEXA
bone density
osteoporosis
Bone Scan Hot
means positive for AVN, blastic& lytic mets, pagets, hodgkins and fractures
Bone Scan cold
means nothing
seen in MM
SPECT
best imaging modality to determine if a spondylolysis is active or inactive