Analysis of the simulated electromagnetic field distribution of the insert appli cator used in microwave hyperthermia for treating bone tumors
- VernacularTitle:对探针式同轴探头在骨肿瘤微波热疗中电磁场分布的数值模拟分析
- Author:
Xiaoli XI
;
Wenbing WANG
- Publication Type:Journal Article
- Keywords:
Bone tumors;
Microwave hyperthermia;
Finite element method$$$$
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2004;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To simulate and investigate th e electromagnetic field distribution of the insert applicator used in microwave hy perthermia for treating bone tumors. Methods Bone t umor model with layered cylindrical shape was made. The applicator was made from a coaxial cable that peeled off the out copper at the end, which were inserted into the cylindrical bone with different depths. The three dimensions finite ele ment method (FEM) was used to calculate the various parameters of the simulated electromagnetic field. Results The electromagnetic energy could be well transmitted into the tissues when the section of the out co pper cutting was embedded in the tissues. The electromagnetic energy to the tiss ue was enhanced when the tip of the applicator got close to but not penetrated t he tissue. Conclusion The intensity of irradiation t o the target tissue was determined by the dimension and depth of insertion of th e applicator. This is very important for the selection of the type and insertion depth of the applicator when using microwave hyperthermia for treating bone tum or in clinical practice.
