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Electrical impedance scanning for classifying suspicious breast lesions: first results
A Malich1, T Fritsch, R Anderson
1Institute of Diagnostic and Interventional Radiology, Friedrich-Schiller University Jena, Germany.
European Radiology
|October 25, 2000
Summary
Electrical impedance scanning (EIS) shows promise for breast cancer detection, accurately identifying 93.1% of malignant lesions in high-resolution mode. This technology aids in differentiating benign from malignant findings.
Area of Science:
- Biomedical Engineering
- Medical Imaging
- Oncology
Background:
- Cancer cells possess distinct dielectric properties compared to normal cells.
- Electrical conductivity and capacitance differ between malignant and normal tissues.
- Electrical impedance scanning (EIS) is an emerging technology for tissue analysis.
Purpose of the Study:
- To assess the reliability of EIS for classifying suspicious breast lesions.
- To differentiate between benign and malignant findings.
- To evaluate EIS as a primary breast cancer detection tool.
Main Methods:
- Fifty-two women with 58 suspicious findings underwent EIS using standard and high-resolution modes.
- TransScan TS2000 device was utilized for examinations.
- Patients also had MR mammography and histopathological confirmation.
Main Results:
- High-resolution EIS correctly identified 93.1% of malignant lesions and 65.5% of benign lesions.
- Standard-resolution EIS achieved 75.9% sensitivity and 72.4% specificity.
- Negative and positive predictive values were 90.5% and 73.0%, respectively.
Conclusions:
- EIS is a promising technology for verifying suspicious mammographic and sonographic lesions, particularly in high-resolution mode.
- The technology demonstrates high sensitivity for malignant lesion detection.
- Artifacts like skin lesions and poor contact currently limit EIS application.