Weighted Image and Contrast 
(images source: Diagnostic studies in neurology)
wpe2E.jpg (7373 bytes) wpe1A.jpg (1029 bytes)T1 Weighted Image (T1WI)

- intensity: Fat>WM>GM>CSF>air		 wpe2F.jpg (7244 bytes)
T2 Weighted Image (T2WI)wpe18.jpg (1070 bytes)

- intensity : CSF>GM>WM>Muscle>air
wpe30.jpg (11990 bytes) wpe1B.jpg (1029 bytes)Proton Density Weighted (PDWI)

- higher signal intensity appears with higher tissue density
- intensity: GM>WM

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