Attribute Lesion Number identifies the lesion(s) of interest imaged within the current SOP Instance. Each lesion shall have a unique numeric integer identifier within the study. If during a study the same lesion is imaged more than once, the same Lesion Number should be used for both SOP Instances.
Notes: 1.Lesion Number is not a DICOM UID.
2.An IVUS pullback may contain multiple values in Lesion Number.