Double Slot Antenna for Microwave Thermal Ablation to Treat Bone Tumors: Modeling and Experimental Evaluation
| Autor: | Josefina Gutiérrez-Martínez, Lorenzo Leija-Salas, Genaro Rico-Martínez, Arturo Vera-Hernández, C.J. Trujillo-Romero |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
double slot antenna
Materials science Computer Networks and Communications Acoustics 0206 medical engineering lcsh:TK7800-8360 Slot antenna 02 engineering and technology macromolecular substances Bone tissue bone tumor 030218 nuclear medicine & medical imaging 03 medical and health sciences thermal ablation 0302 clinical medicine Thermal medicine Standing wave ratio Electrical and Electronic Engineering microwave ablation (MWA) finite element method (FEM) Microwave ablation lcsh:Electronics 020601 biomedical engineering Finite element method medicine.anatomical_structure Hardware and Architecture Control and Systems Engineering Signal Processing Antenna (radio) Microwave |
| Zdroj: | Electronics Volume 10 Issue 7 Electronics, Vol 10, Iss 761, p 761 (2021) |
| ISSN: | 2079-9292 |
| DOI: | 10.3390/electronics10070761 |
| Popis: | According to statistics of the American Cancer Society, the number of young people diagnosed with bone tumors is growing. Surgery and radiotherapy are the common treatments, however they have several side effects which affect the patient’s life. Therefore, a cheaper and less side-effect therapy called thermal ablation has been explored. The goal of this paper is to measure the therapeutic temperatures and the viability of a double slot antenna designed to treat bone tissue by microwave ablation. The antenna (at an operating frequency of 2.45 GHz) was designed, modeled, constructed, and experimentally evaluated. The finite element method was used to predict the antenna performance by means of 2D axisymmetric models. The modeling parameters were used to build the antenna. The experimental evaluation shows that the antenna behavior is repeatable and the standing wave ratio (SWR) was around 1.5–1.8. Temperatures around 60–100 °C were achieved over the bone tissue. The antenna insertion modifies the antenna performance. An insertion lower than 3.5 cm is not recommended because the convection effects modified the tissue temperature. The thermal patterns showed a heat focus near to the slots, which makes it possible for use in the treatment of small tumors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|