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KMID : 0362919840020010021
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Journal of the Korean Society for Therapeutic Radiology and Oncology
1984 Volume.2 No. 1 p.21 ~ p.23
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Thermometry in Hyperthermia induced by Ultrasound A Phantom study
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Park Charn-Il
Koh Kyoung-Hwan
Ha Sung-Whan
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Abstract
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Temperature homogeneity and stationary temperature is the most important thermometric considerations for the clinical use of hyperthermia.
A thermal mapping was done in a phantom with thermocouple during hyperthermia which was induced by 1.0 MHz, 0.7∼0.8 watts/㎠ ultrasound and unfocused 2.5 cm-diameter transducer.
The results were as follow.
1. Effective heating range(42.5℃±0.5℃) were obtained 3 cm in width and 4 cm in depth from surface of phantom and temperature distribution was relatively uniform.
2. There was little heating effect more than 2 cm away from transducer axis and more than 5 cm in depth.
3. There was hot spots(more than 43℃) in 2.0±0.5 cm depth from transducer along tranducer axis.
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