Open-Source Tracked Ultrasound with Anser Electromagnetic Tracking

  • Alfred Michael FranzEmail author
  • Herman Alexander Jaeger
  • Alexander Seitel
  • Pádraig Cantillon-Murphy
  • Lena Maier-Hein
Conference paper
Part of the Informatik aktuell book series (INFORMAT)


Image-guided interventions (IGT) have shown a huge potential to improve medical procedures or even allow for new treatment options. Most ultrasound(US)-based IGT systems use electromagnetic (EM) tracking for localizing US probes and instruments. However, EM tracking is not always reliable in clinical settings because the EM field can be disturbed by medical equipment. So far, most researchers used and studied commercial EM trackers with their IGT systems which in turn limited the possibilities to customize the trackers in order minimize distortions and make the systems robust for clinical use. In light of current good scientific practice initiatives that increasingly request research to publish the source code corresponding to a paper, the aim of this work was to test the feasibility of using the open-source EM tracker (Anser EMT) for localizing US probes in a clinical US suite for the first time. The standardized protocol of Hummel et al. yielded a jitter of 0.1 ± 0.1mm and a position error of 1.1 ± 0.7mm, which is comparable to 0.1 mm and 1.0 mm of a commercial NDI Aurora system. The rotation error of Anser EMT was 0.15 ± 0.16º, which is lower than at least 0:4 ºfor the commercial tracker. We consider tracked US as feasible with Anser EMT if an accuracy of 1–2 mm is sufficient for a specific application.


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Copyright information

© Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature 2019

Authors and Affiliations

  • Alfred Michael Franz
    • 1
    • 4
    Email author
  • Herman Alexander Jaeger
    • 2
  • Alexander Seitel
    • 4
  • Pádraig Cantillon-Murphy
    • 2
    • 3
  • Lena Maier-Hein
    • 4
  1. 1.Institute for Computer ScienceUlm University of Applied SciencesUlmDeutschland
  2. 2.University College CorkCorkIrland
  3. 3.Tyndall National InstituteDyke ParadeCorkIrland
  4. 4.Division of Computer Assisted Medical InterventionsGerman Cancer Research Center (DKFZ)HeidelbergDeutschland

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