A radial elongation is present if the following ratio is founded : (Hmax - Hvasc) / Lmax > 3
radial elongation of the fibrous dorsal cap (in the subcortical zone)
radial elongation of the fibrous dorsal cap (in the subcortical zone)
radial elogation of the dorsal cap absent
radial elongation of the dorsal cap absent
radial elongation present