J Korean Soc Ther Radiol.
1990 Dec;8(2):155-162.
Design and Thermal Distribution of Microwave Spiral Antenna
- Affiliations
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- 1Department of Radiology, College of Medicine, Ewha Womans University, Seoul, Korea.
Abstract
- Spiral microwave antennas have been developed and measure the thermal distribution in agar phantom. The design has been configured in three types, 3cm f applicator with 24.5cm length (A type), 4cm f with 12.2cm (B type) and 6cm f with 24.5cm length (C type). The relative specific absorption rate (SAR) measured in phantom have been used to estimate the depth and profile of effective heating. The applicator of copper antenna with 4cm f diameter and 12.2cm length (B type) has the most homogeneous (FWHM=3.5cm) and heating into deep with (Deff=4cm).
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