A, CT scan showing disk herniation in the posterolateral part of the L4-L5 disk.B, Transforaminal periradicular infiltration at the L5–S1 level, demonstrating.

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Presentation transcript:

A, CT scan showing disk herniation in the posterolateral part of the L4-L5 disk.B, Transforaminal periradicular infiltration at the L5–S1 level, demonstrating the needle placement and contrast medium within the right L5 root sheet. A, CT scan showing disk herniation in the posterolateral part of the L4-L5 disk.B, Transforaminal periradicular infiltration at the L5–S1 level, demonstrating the needle placement and contrast medium within the right L5 root sheet. C. Cyteval et al. AJNR Am J Neuroradiol 2006;27:978-982 ©2006 by American Society of Neuroradiology