Fig. 1. Lumbar spine magnetic resonance imaging (MRI) images showing desiccation, high intensity zone (HIZ), and protrusion/extrusion. (A) Sagittal T2-weighted MRI image showing a HIZ and Pfirrmann grade IV. ‘*’ denotes the HIZ. (B) Axial T2-weighted MRI image showing a left paracentral disc protrusion (arrow). (C) Sagittal T2- weighted MRI image showing HIZ and Pfirrmann grade IV disc (arrow). (D) Axial T2- weighted MRI image showing a HIZ without protrusion/extrusion (arrowhead).
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