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Variation in breast EIT measurements due to menstrual cycle
Alexander Hartov1, Nirmal K Soni, Keith D Paulsen
1Thayer School of Engineering, Dartmouth College, Hanover, NH 03766, USA.
Physiological Measurement
|March 10, 2004
Summary
Menstrual cycle phases may alter breast tissue electrical properties, but results were inconsistent across 8 subjects in this preliminary study. Further research is needed to confirm these physiological changes and their impact.
Area of Science:
- Biomedical Engineering
- Physiology
- Medical Imaging
Background:
- The menstrual cycle involves significant physiological changes.
- Tissue electrical properties can vary based on biological factors.
- Understanding these variations is crucial for accurate medical assessments.
Purpose of the Study:
- To investigate if physiological changes during the menstrual cycle affect breast tissue electrical properties.
- To determine the impact of the menstrual cycle on conductivity and permittivity.
Main Methods:
- Electrical impedance tomographic (EIT) breast measurements were taken from 8 volunteers.
- Measurements were performed four times across two menstrual cycles.
- Statistical analysis using t-tests compared conductivity and permittivity values between cycle phases.
Main Results:
- Inconsistent results were observed across subjects.
- Some subjects showed significant differences in electrical properties between cycle phases.
- Other subjects exhibited differences only in specific tests.
Conclusions:
- A difference in breast tissue electrical properties related to the menstrual cycle is more likely than not.
- The effect may be individual-specific and not universally measurable.
- A larger-scale study is recommended for definitive conclusions.