DICOM Slice Ordering

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I have a basic question for the DICOM protocol.

I know how I can calculate the orientation labels of every slice of a DICOM image (A,P,L,R,H,F). But when I got for example an Axial slices with numbers from 0001 to 0024 I need to know if the slice order is from Head to Feet or from Feet to Head.

How can I calculate that ?

3 Answers

You do not need to consider the patient position tag to label dicom images orientations when presented on screen. You only need the image orientation patient. Since that's the orientation of the image in the (patient) reference coordinate system. So, for example you will get different values for IOP from a CT scanner if the patient is prone or supine.

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