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Evaluating the BioTac’s Ability to Detect and Characterize Lumps in Simulated Tissue

  • Jennifer C. T. HuiEmail author
  • Katherine J. Kuchenbecker
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8619)

Abstract

Surgeons can detect and characterize tumors in open surgery by palpating tissue with their fingertips, but palpation is not currently possible in minimally invasive surgery (MIS). Motivated by the goal of creating an automatic palpation tool for MIS, we evaluated the SynTouch BioTac sensor’s ability to detect and characterize lumps in simulated tissue. Models were constructed from silicone rubber with rigid spheres of three sizes embedded at three depths, plus models without embedded lumps. Electrode impedance and DC pressure were recorded as each model was indented into the BioTac at sixteen indentation depths up to 4.0 mm. Support vector machine classifiers were trained on subsets of the data and tested on trials from withheld models for three tasks: lump detection, lump size characterization, and lump depth characterization. The lump detection and lump size classifiers achieved relatively high accuracies, especially at the deepest indentation depths, but the lump depth classifier performed no better than chance.

Keywords

Support Vector Machine Indentation Depth Minimally Invasive Surgery Tactile Sensor Classifier Accuracy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The first author was supported by a research fellowship from the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE-0822. The authors would like to thank the members of the Haptics Group, in particular John C. Nappo for his assistance in model manufacturing and Alexandre Miranda Añon and Claudio Pacchierotti for their assistance in preparing this manuscript.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Jennifer C. T. Hui
    • 1
    Email author
  • Katherine J. Kuchenbecker
    • 1
    • 2
  1. 1.Department of Computer and Information ScienceUniversity of PennsylvaniaPhiladelphiaUSA
  2. 2.Department of Mechanical Engineering and Applied Mechanics, Haptics Group, GRASP LabUniversity of PennsylvaniaPhiladelphiaUSA

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