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A sheathed micro thermoprobe for local temperature measurements in tissue
Medical Progress Through Technology
|January 1, 1981
Summary
A novel miniature sheathed thermocouple (0.18 mm diameter) offers rapid temperature measurements (6 ms response time). This breakthrough enables precise thermal analysis in previously inaccessible small objects, including tumors.
Area of Science:
- Materials Science
- Biomedical Engineering
- Thermal Measurement
Background:
- Accurate temperature measurement is critical in various scientific and medical fields.
- Measuring temperature in small or delicate objects presents significant challenges due to probe size limitations.
Purpose of the Study:
- To develop and characterize a miniature sheathed thermocouple for high-resolution temperature measurements.
- To demonstrate the utility of this device in challenging applications, such as in vivo tumor thermometry.
Main Methods:
- Construction of a sheathed thermocouple with an outer diameter of 0.18 mm.
- Characterization of the thermocouple's response time constant (6 ms).
- Application of the thermocouple for temperature distribution mapping in a biological tumor model.
Main Results:
- Successfully fabricated a 0.18 mm sheathed thermocouple with a rapid 6 ms response time.
- Demonstrated feasibility of measuring temperature distribution within a tumor.
- Identified and discussed potential sources of measurement error.
Conclusions:
- The miniature thermocouple is a viable tool for precise temperature measurements in microscale environments.
- This technology opens new avenues for thermal analysis in small biological tissues and other miniature applications.
- Further research should focus on refining measurement accuracy and exploring broader applications.