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The portion of the DICOM Standard decribing CT Image Module Attributes may be found in the attachment CT-Module-DICOM-STD-11_03pu.pdf . The 3rd column of the attachment specifies the 'Type' for each attribute; DICOM Data Element Types are described in the attachment DICOM-Data-Element-Types-11_05pu.pdf. Addional details may be found in the attachments DICOM-General-Equipment-Module-11_03pu.pdf and DICOM-Image-Modules-11_03pu.pdf.