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Jeff
Posts:
76
Registered:
3/2/11


Re: How to get HU values from CT image
Posted:
Sep 17, 2012 8:13 PM


Manoj,
I believe what you need to do is to convert the displayed/generated pixel values, which are greyscale values, into the corresponding Hounsfield Unit (HU). To do this you use the following equation:
HU = pixel_value*slope  intercept
The intercept is found in the dicom header at 0028,1052 and the slope at 0028,1053. Plug these into the equation and you obtain the HU value which is simply a rescaling of the linear attenuation coefficient.



