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A New Haptic Sensor Actuator System for Virtual Reality Applications in Medicine

  • Walaa Khaled
  • Stefan Reichling
  • Otto T. Bruhns
  • Holger Boese
  • Mario Baumann
  • Gareth Monkman
  • Stefan Egersdoerfer
  • Herbert Freimuth
  • Helmut Ermert
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2878)

Abstract

The pathological state of soft tissues is often correlated with changes in stiffness. Malignant tumors are significantly stiffer and more immobile than surrounding healthy tissue. (hard lesions, “nodes” in organs: tumors; calcifications in vessels: arteriosclerosis). The main problem is, that such information is usually not available or can only be obtained by manual palpation, which is subjective and limited in sensitivity. It requires intuitive assessment and does not allow quantitative documentation. On the one hand a suitable sensor is required for quantitative measurement of mechanical tissue properties. On the other hand, there is also a need for a realistic mechanical display of such tissue properties. Suitable actuator arrays with high spatial resolution acting in real time are required. A haptic sensor actuator system is presented in this paper including a sensitive sensor part and an actuator array for different applications. The mechanical consistency of an object is to be locally specified using a sensor system and represented perceptibly in a remote position on a tactile display (actuator system) for the user. The sensor system uses ultrasound (US) elastography, whereas the actuator array is based on electrorheological (ER) fluids.

Keywords

Radical Prostatectomy Mold Insert Manual Palpation Tactile Display Virtual Reality Application 
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.

References

  1. 1.
    Pesavento, A., Lorenz, A., Siebers, S., Ermert, H.: New real-time strain imaging concepts using diagnostic ultrasound. Phys. Med. Biol. 45, 1423–1435 (2000)CrossRefGoogle Scholar
  2. 2.
    Khaled, W., Ermert, H., Bruhns, O., Reichling, S., Böse, H., Baumann, M., Monkman, G.J., Egersdörfer, S., Meier, A., Klein, D., Freimuth, H.: A haptic sensor-actor-system – Studies in health technology and informatics. MMVR 11 94, 144–150 (2003)Google Scholar
  3. 3.
    Monkman, G.J.: An Electrorheological Tactile Display – Presence. Journal of Teleoperators and Virtual Environments 1(2), 219–228 (1992)Google Scholar
  4. 4.
    Monkman, G.J., Böse, H., Ermert, H., Khaled, W., Klein, D., Freimuth, H., Baumann, M., Egersdörfer, S., Bruhns, O.T., Meier, A., Raja, K.: Smart Fluid Based Haptic System for Telemedicine. In: 7th International conf. on the medical Aspects of telemedicine, Regensburg, Germany, pp. 59–70 (2002)Google Scholar
  5. 5.
    Pesavento, A., Perrey, C., Krueger, M., Ermert, H.: A time-efficient and accurate strain estimation concept for ultrasonic elastography using iterative phase zero estimation. IEEE Trans. Ultrasonics, Ferroelectrics and Frequency Control 46, 1057–1067 (1999)CrossRefGoogle Scholar
  6. 6.
    Scheipers, U., Lorenz, A., Pesavento, A., Ermert, H., Sommerfeld, H.-J., Garcia-Schürmann, M., Kühne, K., Senge, T., Philippou, S.: Ultrasonic multifeature tissue characterization for the early detection of prostate cancer. In: IEEE Ultrasonics Symposium, pp. 1265–1268 (2001)Google Scholar
  7. 7.
    Egevad, L., Norberg, M., Mattson, S., Norlen, B.J., Busch, C.: Estimation of prostate cancer volume by multiple core biopsies before radical prostatectomy. Urology 52, 653–658 (1998)CrossRefGoogle Scholar
  8. 8.
    Monkman, G.J.: Addition of solid structures to electrorheological fluids. Journal of Rheology 35, 1385–1387 (1991)CrossRefGoogle Scholar
  9. 9.
    Böse, H., Monkman, G.J., Freimuth, H., Klein, D., Ermert, H., Baumann, M., Egersdörfer, S., Khaled, W., Bruhns, O.T.: ER Fluid Based Haptic System for Virtual Reality. In: 8th Interntional conf. on new Actuators, Bremen, pp. 351–354 (2002)Google Scholar
  10. 10.
    Monkman, G.J., Meier, A., Egersdörfer, S.: Opto-isolated High voltage control array- UK/European patent pending (March 2003)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Walaa Khaled
    • 1
  • Stefan Reichling
    • 1
  • Otto T. Bruhns
    • 1
  • Holger Boese
    • 2
  • Mario Baumann
    • 2
  • Gareth Monkman
    • 3
  • Stefan Egersdoerfer
    • 3
  • Herbert Freimuth
    • 4
  • Helmut Ermert
    • 1
  1. 1.Ruhr-University BochumBochumGermany
  2. 2.Fraunhofer-Institut fuer Silicatforschung ISCWuerzburgGermany
  3. 3.Fachhochschule RegensburgRegensburgGermany
  4. 4.Institute fuer Mikrotechnik Mainz GmbHMainzGermany

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