HU of tissue in CT

Fat has a HU (hounsfield unit) of:

-100 HU

Air has a HU (hounsfield unit) of:

-1000 HU

Lungs has a HU (hounsfield unit) of:

-200 HU

Water has a HU (hounsfield unit) of:

0 HU

Dense bone has a HU (hounsfield unit) of:

1000 HU

Cerebral spinal fluid has a HU (hounsfield unit) of:

15 HU

blood has a HU (hounsfield unit) of:

20 HU

Gray matter has a HU (hounsfield unit) of:

40 HU

White matter has a HU (hounsfield unit) of:

45 HU

Muscle has a HU (hounsfield unit) of:

50 HU