352-353 / 1245
Note only one calibration per CT unit regardless of patient
size
Bone line is scanner dependent due
to nominal tube energy
Density Calibration Curves
-800.00
-600.00
-400.00
-200.00
0.00
200.00
400.00
600.00
800.00
0.100
0.300
0.500
0.700
0.900
1.100
1.300
1.500
1.700
Relative Electron Density
Hounsfield Units
CT 3 CT 4 CT 5 CT 6
N
CT
a
electron density
e
t