Electrical Property Imaging for Breast Cancer Detection
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Solution Overview
Problem
Current breast cancer detection methods, such as mammography and biopsies, are limited by low sensitivity in dense breasts, patient discomfort, high costs, and inaccuracies due to sampling issues, necessitating a non-invasive and accurate method for characterizing cancerous tissues.
Innovation Solution
A method using electrical property imaging to measure and model the characteristic frequency of breast tissues, distinguishing cancerous from non-cancerous regions by fitting electrical characteristics to a Cole model, allowing for early detection without invasive procedures and regardless of breast density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mammography is used for breast cancer detection, then screening capability is provided, but sensitivity decreases in dense breasts
Solution Approach 1:
The patent replaces the mechanical/radiographic compression and imaging system with an electrical property measurement system. Electrical impedance and capacitance measurements are used to detect tissue characteristics without relying on radiographic contrast, thereby eliminating the density-dependent limitation of mammography while maintaining detection capability across all breast types.
Solution Approach 2:
The patent changes the detection parameter from radiographic absorption (mammography) to electrical properties (impedance, capacitance, conductance). By measuring electrical characteristics at multiple frequencies and analyzing tissue response, the system achieves consistent detection performance regardless of breast density, as electrical properties reflect cellular composition rather than density.
2Measurement precision
If biopsy procedures are performed to confirm cancerous tissues, then diagnostic accuracy is improved, but patient discomfort and procedure complexity increase
Solution Approach 1:
The patent replaces invasive mechanical biopsy procedures with non-invasive electrical property measurements. By using electrode arrays to measure impedance, capacitance, and conductance characteristics of breast tissue, the system provides diagnostic information without needle insertion, tissue extraction, or surgical intervention, thereby eliminating patient discomfort while maintaining diagnostic capability.
Solution Approach 2:
The patent introduces electrical measurements as an intermediary between non-invasive screening and invasive biopsy. The electrical property data serves as a diagnostic mediator that can identify suspicious lesions and characterize tissue properties without requiring physical tissue sampling, reducing the need for uncomfortable biopsy procedures.
3Ease of operation
If core biopsies are performed to reduce surgical intervention, then patient anxiety is reduced, but sampling accuracy decreases due to limited tissue extraction
Solution Approach 1:
The patent creates a multi-functional diagnostic system that performs both screening and characterization functions through electrical measurements. The same electrode array and measurement protocol can identify suspicious lesions, estimate malignancy probability, and characterize tissue properties without requiring multiple procedures or tissue sampling, thereby achieving comprehensive diagnosis with a single non-invasive test.
Solution Approach 2:
The patent replaces mechanical tissue sampling with electrical field interaction. By measuring how breast tissue responds to applied electrical fields (impedance, capacitance, conductance), the system obtains diagnostic information about tissue composition and structure without physically removing or disturbing the tissue, thereby eliminating sampling errors while maintaining diagnostic accuracy.
4Reliability
If MRI is used for increased cancer detection sensitivity, then detection capability is improved, but cost increases significantly
Solution Approach 1:
The patent employs a cost-effective electrical measurement system using simple electrode arrays and standard impedance measurement equipment. Unlike expensive MRI infrastructure, the electrical property measurement system uses inexpensive, portable components that can be deployed in routine clinical settings, achieving comparable or superior detection sensitivity for breast cancer screening at a fraction of the cost.
Solution Approach 2:
The patent replaces complex MRI magnetic field generation and signal detection systems with simple electrical impedance measurement circuits. By substituting expensive magnetic resonance imaging technology with affordable electrical property measurement, the system achieves high detection sensitivity without the substantial infrastructure investment, equipment cost, and operational complexity of MRI.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides a fast, accurate, and cost-effective means to detect incipient cancerous tissues, reducing the need for painful biopsies and improving detection rates, especially in dense breasts, while maintaining high sensitivity.
Implementation Method 1
measuring a plurality of electrical properties of the breast at a plurality of frequencies including impedance
Implementation Method 2
measuring a plurality of electrical properties of the breast at a plurality of frequencies including capacitance
Implementation Method 3
measuring a plurality of electrical properties of the breast at a plurality of frequencies including conductance
Data Source
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AI summary
A method for characterizing tissues within a subject as cancerous or non-cancerous includes determining the electrical properties of the subject. The electrical properties of the subject are fit to a model and a characteristic frequency of each tissue is then calculated. Each tissue is finally characterized as cancerous or non-cancerous if its characteristic frequency lies above a threshold value.