The Smart Bra: Enabling Rapid and Simple Breast Cancer Screening

Overview

Breast cancer is a leading cause of cancer mortality among women worldwide, and early detection is critical for survival. Current screening methods — primarily mammography — require specialised equipment, involve breast compression, and remain inaccessible for many women in rural and remote communities. Mammography is also less sensitive in women with dense breast tissue, and national programs typically target women over 50, despite rising diagnoses in younger age groups.

The Smart Bra addresses this gap by embedding soft, stretchable bioimpedance sensors directly into a wearable garment, enabling women to monitor breast tissue changes at home without radiation exposure, discomfort, or the need for specialist facilities.

Underpinning Technology

Bioimpedance measures how electrical current passes through tissue. Cancerous tissues exhibit distinct electrical signatures compared to healthy tissue — reflecting changes in cellular structure, extracellular fluid distribution, and tissue density. The same principle already powers health monitoring in consumer smartwatches; this project translates it into a bra-integrated platform optimised for breast tissue characterisation across multiple frequencies.

Research Aims

• Collect breast tissue bioimpedance measurements from participants undergoing routine mammography screening.
• Characterise the electrical properties of breast tissue across tissue density classifications and determine whether bioimpedance signatures correlate with mammographic findings.
• Establish the electrode positioning and frequency parameters needed for reliable tissue differentiation.
• Generate preliminary data to support the development of a fully wearable bra device and future funding applications.

Approach

Bioimpedance recordings will be conducted across a range of frequencies in Faraday-shielded enclosures. Statistical analysis will evaluate correlations between impedance parameters and the four mammographic breast tissue density types, with Type IV (dense tissue) — which carries the highest breast cancer risk — as a primary focus.

Impact

A validated wearable bioimpedance screening device could provide a low-cost, non-invasive complement to mammography — particularly for younger women, women with dense breast tissue, and communities with limited access to clinical imaging.

Related Publications

1. De León SE, Pupovac A, McArthur SL. Three-Dimensional (3D) cell culture monitoring: Opportunities and challenges for impedance spectroscopy. Biotechnology and Bioengineering. 2020;117:1230–1240. https://doi.org/10.1002/bit.27270
2. De Leon SE, Cleuren L, Oo ZY, Stoddart PR, McArthur SL. Extending In-Plane Impedance Measurements from 2D to 3D Cultures: Design Considerations. Bioengineering. 2021;8:11. https://doi.org/10.3390/bioengineering8010011

Collaborators

BreastScreen Victoria · LifePool, Peter MacCallum Cancer Centre · St Vincent's Hospital · Aikenhead Centre for Medical Discovery · RMIT University