http://mail.rmib.mx/index.php/rmib/issue/feed 2025-01-01T00:00:00+00:00 Prof. Dora-Luz Flores rib.somib@gmail.com Open Journal Systems <center> <p><strong>MISSION</strong></p> <p align="left"><em>La Revista Mexicana de Ingeniería Biomédica</em> (The Mexican Journal of Biomedical Engineering, RMIB, for its Spanish acronym) is a publication oriented to the dissemination of papers of the Mexican and international scientific community whose lines of research are aligned to the improvement of the quality of life through engineering techniques.</p> <p align="left">The papers that are considered for being published in the RMIB must be original, unpublished, and first rate, and they can cover the areas of Medical Instrumentation, Biomedical Signals, Medical Information Technology, Biomaterials, Clinical Engineering, Physiological Models, and Medical Imaging as well as lines of research related to various branches of engineering applied to the health sciences.</p> <p align="left">The RMIB is an electronic journal published quarterly ( January, May, September) by the Mexican Society of Biomedical Engineering, founded since 1979. It publishes articles in spanish and english and is aimed at academics, researchers and professionals interested in the subspecialties of Biomedical Engineering.</p> <p><strong>INDEXES</strong></p> <p><em>La Revista Mexicana de Ingeniería Biomédica</em> is a quarterly publication, and it is found in the following indexes:</p> <p><img src="https://www.rmib.mx/public/site/images/administrador/índices_y_repositorios_(1100_×_1000 px).jpg" /></p> </center> http://mail.rmib.mx/index.php/rmib/article/view/1456 2024-11-09T03:44:09+00:00 Raquel Martínez-Valdez maukato@gmail.com Ivonne Bazán ivonne.bazan@edu.uaa.mx

<p>The aim of this work is to analyze the usage of the boundary element method (BEM) as a fast computational tool for solving large ultrasonic field problems, <em>i.e.</em> 3D models. A proposed tridimensional radiating surface <em>S_R</em> was modeled by means of BEM and the finite element method (FEM). Four time-harmonics models were developed: two containing the entire <em>S_R</em> and two considering a symmetrical plane at half-length of the radiator. BEM solutions were validated with FEM models by contours at -3 dB and -6 dB pressure decays, areas within the contours, elliptical shape ratio <em>E_r</em> and ellipsoidal focal volume approximations. The average differences in pressure and distance at the focus were 39.875 Pa and 0.4515 mm, respectively; the areas within the contours show differences between 0.6 mm² and 2.3 mm². The <em>E_r</em> of the focal zone was over 92 %, while the ellipsoidal volume approximation showed differences between 0.0817 mm³ to 1.4632 mm³ at -3 dB, and 1.2354 mm³ to 4.1144 mm³at -6 dB. Analyzed data suggest the use of BEM to model the ultrasonic beam pattern in a lossless medium during ultrasonic biomedical applicators design, reducing the solution time from 22 h with FEM to 2 min with BEM.</p>

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