Comparison of the presence and non-presence states of magnetite nanoparticles in tissue-equivalent breast phantom via radiofrequency hyperthermia | ||
Nanomedicine Journal | ||
مقاله 6، دوره 7، شماره 1، فروردین 2020، صفحه 49-57 اصل مقاله (1.16 M) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22038/nmj.2020.07.06 | ||
نویسندگان | ||
Seyede Mahsa Kavousi1؛ Seyed Erfan Saadatmand1؛ Nader Riyahi Alam* 1؛ Seyed Rabi Mahdavi2؛ Leila Khalaf2 | ||
1Department of Physics and Medical Engineering, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran | ||
2Department of Physics and Medical Engineering, School of Medicine, Iran University of Medical Sciences, Tehran, Iran | ||
چکیده | ||
Objective(s): Breast cancer is a fatal disease and the leading cause of mortality in women. Radiofrequency hyperthermia is an approach to the treatment of cancer cells through increasing their temperature. The present study aimed to investigate breast tumor ablation via radiofrequency hyperthermia in the presence and non-presence states of magnetite nanoparticles and assess the effects of magnetite nanoparticles on breast cancer treatment in hyperthermia. Materials and Methods: Radius hemisphere geometry (5 cm) was designed, which was similar to an actual breast based on the fat tissues, glandular tissues as a semi-oval embedded in the hemisphere, and a radius sphere (1 cm) as a tumor region inside. After utilization in a three-dimensional printer, each layer of the phantom was filled with a proper combination of oil-gelatin with similar dielectric and thermal properties to an actual breast. To evaluate the effects of the magnetite nanoparticles, three weights of the magnetite were added to the tumor region (0.01, 0.05, and 0.1 g). Finally, the phantom was placed in a radiofrequency device with the frequency of 13.56 MHz. Results: Temperature differences were measured at four different points of the phantom. The power and time in the treatment were estimated at 40 watts and five minutes, respectively. The temperature and specific absorption rate plots were obtained for all the states in several graphs for five minutes. The results showed that the heat generation with the utilization of the magnetite state was higher by approximately 2.5-7˚C compared to the state without magnetite. Furthermore, the temperature of 0.05 gram of magnetite indicated that without causing damage in the healthy tissues, the entire tumor region could attain adequate heat uniformly (6.1-6.4˚C). Conclusion: Therefore, it could be concluded that 0.05 gram of magnetite could cause ablation in the entire tumor region. | ||
کلیدواژهها | ||
Breast Phantom؛ Magnetite Nanoparticles؛ Oil-gelatin Phantom؛ Radiofrequency Hyperthermia؛ Specific Absorption Rate (SAR) | ||
مراجع | ||
1. González-Díaz C, Uscanga-Carmona MC, Ibarra-Martínez CD, Jiménez-Fernández ME, Lozano Trenado LM, Silva-Escobedo JG, Polo-Soto SM. Differentiation BIRADS I vs II by Magnetic Induction Spectroscopy: A Potential Innovative Method to Detect Neoplasies in Breast. Revista Mexicana de Ingeniería Biomédica. 2012; 33(2): 65-76. | ||
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