Axial MR images T2 (a), DWI (b value = 400) (b) and ADC map (c) at the presentation of 38-year-old man suffering from lateral leg pain due to left intraforaminal disc herniation. In this case, before percutaneous treatment, the ADC map does not show hyperintense signal indicative of T2–shine through effect.
MR: magnetic resonance; DWI: diffusion-weighted image; ADC: apparent diffusion coefficient.