Translational Demonstration – Tactile Imaging Probe for Breast Tumor Phantom Mechanical Property Estimation

Details

12:00 - 13:45 | Mon 6 Nov | Auditorium Foyer, E1/E2, Upper Atrium Space | MLunch_Break.37

Session: Lunch, Posters and POC Technologies Demonstrations – Session I

Abstract

In this demonstration, we present a Tactile Imaging Probe (TIP) for breast cancer prescreening applications. TIP provides size and deformation index of suspicious lesion, which complements the current subjective method of clinical breast examination. TIP consists of a soft polydimethyl-siloxane (PDMS) sensing probe, which is illuminated using four light emitting diodes, a CMOS camera, and a force gauge. The deformation of PDMS probe by tumor phantom generates tactile images. From these images, size and softness index of tumor phantoms are determined. We developed a 3D interpolation model to estimate the size of tumors using TIP data. The model correlates dependency among applied normal force, sum of the pixel intensities on the compression-induced image, and the diameter of the imaged inclusion. TIP deformation index calculated from the intensity changes in the tactile images taken under different compressive stress to the tissue. Finally, TIP Risk Score is calculated as a weighted average of the normalized size and deformation index results. TIP Risk Score ranges from zero to five. TIP Risk Score closer to zero corresponds to a benign tumor, while TIP Risk Score closer to five corresponds to a malignant tumor.