Rescaling the DICOM images using the RescaleIntercept and RescaleSlope

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1

Hello Everyone,

I am new to the 3D Slicer software and I wanted to know if there is an option to rescale the DICOM images (For example from a Cone Beam CT) using the RescaleSlope and RescaleIntercept. To convert from the normal units found in CT data (a typical data set ranges from 0 to 4000 or so) we have to apply a linear transformation of the data using an equation given as:

hu = pixel_value * slope + intercept

(Citation : http://www.idlcoyote.com/fileio_tips/hounsfield.html)

While I can apply this transformation in Matlab, but it requires a lot of time to rescale every *.dcm file. Is there an option in 3D Slicer to do it? or is it automatically applied while loading the data into the software?. I will be grateful for the help.

Thank you.

2

Rescaling is applied automatically. You can verify this by hovering the mouse pointer over the image and checking the voxel values displayed in the panel in the lower left corner.

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