In DICOM image you can find CT Image.
Here are the Hounsfield Units:
Hounsfield Units
|
Bone |
1000
|
Liver |
40-60
|
White Matter |
46
|
Grey Matter |
43
|
Blood |
40
|
Muscle |
10-40
|
Kidney |
30
|
Cerebrospinal Fluid |
15
|
Water |
0
|
Fat |
-50 - -100
|
Air |
-1000
|
See also [1] for MRI reference T1/T2 values.