[Insight-users] Physical Quantity of Dicom Image

[Madiha Shahab]

HI All,
I need to know what is physical quantity of the pixel i.e whether 1 pixel =
1mm or 1pixel = 1cm or 1pixel= 1km.
which tag in header info of ITK tells this info.
Secondly there are two tags:Sample Spacing and Spacing Between Slices.
Which one of them should I use to calculate space between two pixels


-- 
MADIHA SHAHAB
Software Engineer.
Technology Orbit.
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