Prog Med Phys.  2014 Mar;25(1):1-7. 10.14316/pmp.2014.25.1.1.

Assessment for the Temperature according to the Electrode Diameter of Radio Frequency Hyperthermia Using Agar Phantom

• Lee YH
• Oh YK
• Kim HY
• Jeon KS
• Choi EC
• Park SG
• Kim OB
• Kim JH

• KMID: 1910552
• DOI: http://doi.org/10.14316/pmp.2014.25.1.1

Abstract

Hyperthermia is effective treatment modality when it combine with the radiotherapy treatment. It is important to verify the temperature distribution of (patient's) body for the safety and effective treatment during raising the temperature. In this study, we raised the temperature in agar phantom using radio frequency (RF) Hyperthermia and protocol that manufacture recommend. Temperature distribution measured 5 section of 5 cm thickness with agar phantom. When the temperature was raised according to the increase energy. Temperature distribution was elevated at similar domain regardless of energy. The temperature tend to be increased at up side then bottom side and also increase when A large electrode was used than small one.

Keyword

Hyperthermia; Agar phantom; Temperature distribution

MeSH Terms

Agar*
Electrodes*
Fever*
Radiotherapy
Agar

Figure

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  Fig. 1. Agar phantom and temperature sensor. Size 32×6×3 cm3.

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  Fig. 2. Thermal distribution of 25∼25 cm electrode (liver protocol session 5), (a) surface, (b) depth 3 cm, (c) depth 6 cm, (d) depth 9 cm, (e) depth 12 cm.

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  Fig. 3. Temperature Profiles (liver protocol session 5), (a) electrode 25∼25 cm, (b) electrode 15∼15 cm.

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  Fig. 4. Thermal distribution of 15∼15 cm electrode (liver protocol session 5), (a) surface, (b) depth 3 cm, (c) depth 6 cm, (d) depth 9 cm, (e) depth 12 cm.

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  Fig. 5. Thermal distribution of 15∼25 cm electrode (liver protocol session 5), (a) surface, (b) depth 3 cm, (c) depth 6 cm, (d) depth 9 cm, (e) depth 12 cm.

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  Fig. 6. Thermal distribution of 25-15 cm electrode (liver protocol session5), (a) surface, (b) depth 3 cm, (c) depth 6 cm, (d) depth 9 cm, (e) depth 12 cm.

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