High-frequency ultrasound in guiding needle insertion for microneurography

The main purpose of our document is to add technical details to the procedure published in the study by Timothy B. Curry and Nisha Charkoudian (Curry and Charkoudian, 2011) focused on “the use of real-time ultrasound (US) in microneurography.” In the abovementioned paper, the authors report on real-time ultrasound (US)-guided percutaneous microneurography. They conclude that microneurography, guided by images produced by an US probe, can become more powerful than the traditional procedure (Gandevia and Hales, 1997 and Bergenheim et al., 1999) for direct measurement of sympathetic neural activity in human peripheral nerves. However, in the paper, some useful important technical information is missing for repetition of the experiments: the exact probe frequency and especially the size (diameter) of the needle. In fact, the authors specify only the length of the needle and the frequency range of the probe.