Neurology

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Ultrasound Imaging and Occipital Nerve Stimulation
Neuromodulation, 11/02/09

Skaribas I et al. – Ultrasound imaging has been used increasingly for peripheral nerve blockade in surgical anesthesia and in chronic pain management as it allows real–time localization of both nervous and vascular structures (color flow Doppler) and, thus, a method for increasing blockade precision and safety. As an adjunct to ONS, the position of the introducer needles and electrodes can be visualized in relation to the occipital nerves and vasculature. This reproducible positioning allows accurate depth of placement (assuring production of the prerequisite PNS dermatomal paresthesia required for ONS efficacy) and limits the risk of injury to the occipital artery or nerve(s). In this case series, ultrasonography provided real–time, safe, and reliable placement of ONS electrodes. It also allowed identification of nervous and vascular structures unable to be seen with fluoroscopy, The portable nature of modern ultrasound machines, together with an ever improving pixelation of the Doppler color flow images/real–time measurements, and a lack of radiation exposure make this technology an attractive emerging modality in the field of Neuromodulation.

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