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. 2020 Aug 11;45(10):792–798. doi: 10.1136/rapm-2020-101361

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© American Society of Regional Anesthesia & Pain Medicine 2020. Re-use permitted under CC BY-NC. No commercial re-use. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, an indication of whether changes were made, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Distinct lesion zones (‘white zones’ indicated by yellow arrows in <1-hour panels) detectable for up to 2 weeks postablation in cooled RF treatment group. (A) Representative images depict axial, T2-weighted MR scans, acquired from a 9.4T Bruker scanner. (n=4–6 per group per time point) (B) Quantified volumes of signal hyperintensity surrounding the lesion site at various time points using the mimics software (bars represent mean±SD, n=4–6 per group per time point; *p<0.05). RF, radiofrequency.