Abstract
Microwave ablation which has the advantages of minimally invasive and high-efficiency was more and more used into a number of areas such as cancer treatment. when the tumor diameter is less than 3cm the ablation effect is ideal, but for larger tumors it must be a higher ablation time and a higher power which can result in the reduction of the antenna performance, so the uncertainty of curative effect enhanced. Therefore the study uses in ex-vivo bovine liver to explore the performance of a new cluster-type microwave antenna which has three microwave ablation needles. The temperature distribution and 60°C isotherm which can decide the scope of the effective ablation were explored. The study carries out with net power of 40W, 60W; ablation time was 5min, 10min, 15min, respectively. For the power of 40W, the maximum temperature, area, volume, diameter and longitudinal diameter was 88.812°C, 9.0511cm2 , 7.917 cm3 , 2.902cm, 3.830cm, respectively with the ablation time 5min while 99.184°C, 19.043 cm2 , 50.936 cm3 , 3.794 cm, 5.835 cm, respectively with the ablation time 10min and 106.094°C, 25.627 2 , 81.6553 , 4.612 cm, 6.719cm, respectively with the ablation time 15min. For the power of 60W, the maximum temperature, area, volume, diameter and longitudinal diameter was 100.047c, 25.372 cm2 , 80.345 cm 3 , 5.343 cm, 6.908 cm, respectively with the ablation time 5min while 108.863c, 42.216 cm 2 , 185.716 cm 3 , 6.319 cm, 8.102 cm, respectively with the ablation time 10min and 110.219c, 49.803 cm 2 , 244.965 cm 3 , 7.228 cm, 8.720 cm, respectively with the ablation time 15min. The 60c isotherm was ellipsoid-like. Under the same power, the 60°C isotherm increase with ablation time and at the same time, the 60°C isotherm increase with power, too. This study may make an important support for the development and clinical application of the antenna.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer International Publishing Switzerland
About this paper
Cite this paper
Nan, Q., Guo, X., Tian, Z., Yan, K. (2015). Ex-vivo experimental study with a new cluster-type microwave ablation antenna. In: Jaffray, D. (eds) World Congress on Medical Physics and Biomedical Engineering, June 7-12, 2015, Toronto, Canada. IFMBE Proceedings, vol 51. Springer, Cham. https://doi.org/10.1007/978-3-319-19387-8_198
Download citation
DOI: https://doi.org/10.1007/978-3-319-19387-8_198
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-19386-1
Online ISBN: 978-3-319-19387-8
eBook Packages: EngineeringEngineering (R0)