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KMID : 0357520150380020155
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Journal of Radiological Science and Technology
2015 Volume.38 No. 2 p.155 ~ p.161
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Ablation Characteristics of Bovine Liver According to Cool-Tip Temperature of RFA Equipment
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Choi Young-Jae
Kim Jeong-Koo
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Abstract
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This study confirmed the correlation between the change of the cooling water in internal cooling system and the size of the ablation site of bovine liver in RF heat treatment equipment. The bovine liver was resection with 4x4x4 cm3 in 2cm cool-tip and with 6x6x6 cm3 in 3cm cool-tip for the experiments. Area and perimeter of the ablation site for bovine liver were measured by Freehand techniques of MRI. It showed area and perimeter decreased during cool-tip temperature rises 6 and 12 minutes ablation using a 2cm and 3cm cool-tip. The correlation of cool-tip temperature and area and perimeter was statistically significant the result are shown(p=.000). The measurements of area and perimeter were more accurate with MRI in actual measurements and MRI for ablation range. The statistical results using Paired sample T-test was also significant(p=.038). The ablation range of bovine liver decreased according as cooling water temperature increases in RF heat treatment equipment for reason of carbonization occurred due to does not accurately pass the RF energy. Therefore, it is considered the effect of RF heat treatment would be increased if the temperature of the cooling water consistently maintain the low temperature in order to reduce the generation of carbide at RF heat treatment and RF energy is delivered accurately.
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KEYWORD
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Bovine liver, RF heat treatment equipment, Cool-tip temperature
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