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Related Experiment Video

Updated: May 19, 2026

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
07:32

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

Magnetic resonance imaging-compatible tactile sensing device based on a piezoelectric array.

Abbi Hamed1, Ken Masamune, Zion Tsz Ho Tse

  • 1Mechatronics in Medicine Laboratory, Imperial College London, UK. a.hamed@imperial.ac.uk

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|August 24, 2012
PubMed
Summary

Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...

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This study introduces a novel magnetic resonance imaging-compatible tactile sensor for minimally invasive surgery. This device aims to restore the sense of touch during operations, enhancing diagnostic capabilities.

Area of Science:

  • Biomedical Engineering
  • Surgical Technology
  • Medical Imaging

Background:

  • Minimally invasive surgery (MIS) often lacks tactile feedback, hindering accurate tissue assessment.
  • Existing haptic technologies for MIS primarily focus on stiffness and force, not comprehensive palpation.
  • Magnetic resonance imaging (MRI) offers superior soft tissue visualization but lacks tactile integration.

Purpose of the Study:

  • To propose and describe a novel tactile sensor design for MIS.
  • To enable image-guided palpation by integrating tactile sensing with MRI.
  • To enhance diagnostic capabilities during MIS procedures.

Main Methods:

  • A piezoelectric sensor-based tactile sensing unit was designed.
  • The sensor was engineered to meet stringent MRI compatibility requirements (mechanical and electrical).

Related Experiment Videos

Last Updated: May 19, 2026

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
07:32

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

  • The device was integrated with a 0.2 Tesla open MRI scanner and compatibility was tested.

    • Main Results:

    • A functional tactile sensing unit compatible with MRI environments was developed.
    • Successful integration and testing with a 0.2 Tesla open MRI scanner were demonstrated.
    • The design adheres to the demanding requirements for MRI-guided interventions.

    Conclusions:

    • The proposed piezoelectric tactile sensor enables MRI-guided palpation during MIS.
    • This technology has the potential to significantly improve diagnostic accuracy in MIS.
    • Further improvements and exploration of design limitations are discussed for future development.