Erratum to: Greater occipital nerve infiltration under MR guidance: Feasibility study and preliminary results

Erratum to: Eur Radiol

https://doi.org/10.1007/s00330-017-4952-3

The original version of this article, published on 12 July 2017, unfortunately contained mistakes. The following corrections have therefore been made in the original:

Figures 2–5 were in a wrong position. They are reproduced here with the correct captions.

Fig. 2

Diagram illustrating MR-guided greater occipital nerve (GON) infiltration procedural steps

Fig. 3

MR images depicting the visualisation of the greater occipital nerve (GON). (a, b and c) These images are extracted from different patients’ scanners, but all depict the exit of the GON nerve (white arrow) after the C1-C2 foramen, and its close relationship with the vertebral artery

Fig. 4

Example of intra-inferior obliquus muscle diffusion. Axial and sagittal proton density (PD)-weighted Spectral Attenuated Inversion Recovery (SPAIR) images after greater occipital nerve (GON) infiltration showing diffusion in the obliquus inferior muscle (white arrow). Sagittal image shows a perfect diffusion of the products from the exit of the nerve after the foramen under the obliquus inferior muscle (black arrow) to the semispinalis penetration area of the GON (white arrowhead)

Fig. 5

Example of intraprocedural images showing the accuracy of MR guidance. (a) The accurate visualisation of the needle tip situated in close proximity to an avoided vascular structure (black arrow) and a misplacement of the right needle tip situated intra-muscularly to the obliquus inferior (white arrowhead). (b) The visualisation of the greater occipital nerve (GON) during the needle placement, allowing for the needle tip to be placed immediately next to the GON nerves (white arrows)