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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