This is the Accepted version of the article Citation: Teatini A., Pérez de Frutos J., Langø T., Edwin B., Elle O. (2018) Assessment and comparison of target registration accuracy in surgical instrument tracking technologies. In IEEE Engineering in Medicine and Biology Society. Conference Proceedings, 2018,pp 1845-1848 DOI: 10.1109/EMBC.2018.8512671 This file was downloaded from SINTEFs Open Archive, the institutional repository at SINTEF http://brage.bibsys.no/sintef This is the Accepted version. It may contain differences form the journal's pdf version Teatini A., Pérez de Frutos J., Langø T., Edwin B., Elle O. Assessment and comparison of target registration accuracy in surgical instrument tracking technologies