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Trujillo-Romero CJ, Dionisio Merida J, Ramírez-Guzmán TJ, Martínez-Valdez R, Leija-Salas L, Vera-Hernández A, Rico-Martínez G, Flores-Cuautle JJA, Gutiérrez-Martínez J, Sacristán-Rock E. Thermal Evaluation of Multi-Antenna Systems Proposed to Treat Bone Tumors: Finite Element Analysis. SENSORS (BASEL, SWITZERLAND) 2022; 22:7604. [PMID: 36236709 PMCID: PMC9571680 DOI: 10.3390/s22197604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/28/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Microwave ablation is commonly used in soft tissue tumors, but its application in bone tumors has been barely analyzed. Antennas to treat bone tissue (~3 cm2), has been lately designed. Bone tumors at pathological stage T1 can reach 8 cm wide. An antenna cannot cover it; therefore, our goal is to evaluate the thermal performance of multi-antenna arrays. Linear, triangular, and square configurations of double slot (DS) and monopole (MTM) antennas were evaluated. A parametric study (finite element method), with variations in distance between antennas (ad) and bone thickness (bt) was implemented. Array feasibility was evaluated by SWR, ablated tissue volume, etc. The linear configuration with DS and MTM antennas showed SWR ≤ 1.6 for ad = 1 mm−15 mm and bt = 20 mm−40 mm, and ad = 10 mm−15 mm and bt = 25 mm−40 mm, respectively; the triangular showed SWR ≤ 1.5 for ad = 5 mm−15 mm and bt = 20 mm−40 mm and ad = 10 mm−15 mm and bt = 25 mm−40 mm. The square configuration (DS) generated SWR ≤ 1.5 for ad = 5 mm−20 mm and bt = 20 mm−40 mm, and the MTM, SWR ≤ 1.5 with ad = 10 mm and bt = 25 mm−40 mm. Ablated tissue was 4.65 cm3−10.46 cm3 after 5 min. According to treatment time and array configuration, maximum temperature and ablated tissue is modified. Bone tumors >3 cm3 can be treated by these antenna-arrays.
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Affiliation(s)
- Citlalli Jessica Trujillo-Romero
- Division of Medical Engineering Research, National Institute of Rehabilitation-LGII, Calz. México Xochimilco No. 289, Arenal de Guadalupe, Mexico City 14389, Mexico
| | - Juan Dionisio Merida
- Department of Electrical Engineering, Universidad Autonoma Metropolitana, UAM-Iztapalapa, Av. Ferrocarril San Rafael Atlixco, 186, Leyes de Reforma, Mexico City 09310, Mexico
| | - Texar Javier Ramírez-Guzmán
- Electrical Engineering Department, Bioelectronics Section, CINVESTAV-IPN, Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Raquel Martínez-Valdez
- Biomedical Engineering Program, Universidad Politécnica de Chiapas, Suchiapa 29150, Mexico
| | - Lorenzo Leija-Salas
- Electrical Engineering Department, Bioelectronics Section, CINVESTAV-IPN, Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Arturo Vera-Hernández
- Electrical Engineering Department, Bioelectronics Section, CINVESTAV-IPN, Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Genaro Rico-Martínez
- Bone Tumors Service, National Institute of Rehabilitation-LGII, Calz. México Xochimilco No. 289, Arenal de Guaudalupe, Mexico City 14389, Mexico
| | - José Jesús Agustín Flores-Cuautle
- CONACYT-National Technological Institute of Mexico/I.T. Orizaba, Posgraduate Studies and Research Division, Oriente 9, No. 852, Orizaba 94320, Mexico
| | - Josefina Gutiérrez-Martínez
- Division of Medical Engineering Research, National Institute of Rehabilitation-LGII, Calz. México Xochimilco No. 289, Arenal de Guadalupe, Mexico City 14389, Mexico
| | - Emilio Sacristán-Rock
- National Center for Research in Instrumentation and Medical Imaging, UAM-Iztapalapa, Av. Ferrocarril San Rafael Atlixco, 186, Leyes de Reforma, Mexico City 09310, Mexico
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