Diferencia entre revisiones de «Brain MRI»
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Revisión del 21:10 25 mar 2015
Background
T1- bright-methemoglobin/ fat/ protein- like ct
T2- fluid bright
FLAIR- fluid attenuation inversion recovery - like t2 without
csf ( ms)
Diffusion- restriction free water motion
Blood
blood T1 T2
hyperacute dark, iso bright (oxyhemo)
acute bright dark (deoxyhemo)
1-3 days bright dark (methgb/intracellular)
1-2 wks bright bright ( extracelluar)
2-3 wks dark dark