Revista Mexicana de Ingenieria Biomedica最新文献

Neuromarkers based on EEG Statistics in Time and Frequency Domains to Detect Tinnitus 基于脑电图时域和频域统计的神经标志物检测耳鸣

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-09-01 DOI: 10.17488/rmib.44.3.1

Ricardo A. Salido-Ruiz, Sulema Torres-Ramos, Aurora Espinoza-Valdez, Luz María Alonso-Valerdi, Israel Román-Godínez, David I. Ibarra-Zarate

{"title":"Neuromarkers based on EEG Statistics in Time and Frequency Domains to Detect Tinnitus","authors":"Ricardo A. Salido-Ruiz, Sulema Torres-Ramos, Aurora Espinoza-Valdez, Luz María Alonso-Valerdi, Israel Román-Godínez, David I. Ibarra-Zarate","doi":"10.17488/rmib.44.3.1","DOIUrl":"https://doi.org/10.17488/rmib.44.3.1","url":null,"abstract":"Tinnitus detection and characterization requires a carefully elaborated diagnosis mainly owing to its heterogeneity nature. The present investigation aims to find features in Electroencephalographic (EEG) signals from time and frequency domain analysis that could distinguish between healthy and tinnitus sufferers with different levels of hearing loss. For this purpose, 24 volunteers were recruited and equally divided into four groups: 1) controls, 2) slow tinnitus, 3) middle tinnitus and 4) high tinnitus. EEG signals were registered in two states, with eyes closed and opened for 60 seconds. EEG analysis was focused on two bandwidths: delta and alpha band. For time domain, the EEG features estimated were mean, standard deviation, kurtosis, maximum peak, skewness and shape. For frequency domain, the EEG features obtained were mean, skewness, power spectral density. Normality of EEG data was evaluated by the Lilliefors test, and as a result, the nonparametric technique Kruskal-Wallis H statistic to test significance was applied. Results show that EEG features are more differentiable between tinnitus sufferers and controls in frequency domain than in time domain. EEG features from tinnitus patients with high HL are significantly different from the rest of the groups in alpha frequency band activity when shape and skewness are computed.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of Spectral and Sparse Feature Extraction Methods for Heart Sounds Classification 频谱与稀疏特征提取方法在心音分类中的比较

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-08-17 DOI: 10.17488/rmib.44.4.1

Roilhi Frajo Ibarra Hernández, Miguel A. Alonso-Arévalo, E. García-Canseco

{"title":"Comparison of Spectral and Sparse Feature Extraction Methods for Heart Sounds Classification","authors":"Roilhi Frajo Ibarra Hernández, Miguel A. Alonso-Arévalo, E. García-Canseco","doi":"10.17488/rmib.44.4.1","DOIUrl":"https://doi.org/10.17488/rmib.44.4.1","url":null,"abstract":"Cardiovascular diseases (CVDs) remain the leading cause of morbidity worldwide. The heart sound signal or phonocardiogram (PCG) is the most simple, low-cost, and effective tool to assist physicians in diagnosing CVDs. Advances in signal processing and machine learning have motivated the design of computer-aided systems for heart illness detection based only on the PCG. The objective of this work is to compare the effects of using spectral and sparse features for a classification scheme to detect the presence/absence of a pathological state in a heart sound signal, more specifically, sparse representations using Matching Pursuit with multiscale Gabor time-frequency dictionaries, linear prediction coding, and Mel-frequency cepstral coefficients. This work compares the performance of PCGs classification applying features as a result of averaging the samples or the features for each PCG sound event when feeding a random forest (RF) classifier. For data balancing, random under-sampling and synthetic minority oversampling (SMOTE) methods were applied. Furthermore, we compare the Correlation Feature Selection (CFS) and Information Gain (IG) for the dimensionality reduction. The findings show a SE=93.17 %, SP=84.32 % and ACC=85.9 % when joining MP+LPC+MFCC features set with an AUC=0.969 showing that these features are promising to be used in heart sounds anomaly detection schemes.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43721110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mucoadhesive polymeric systems for vaginal drug delivery: a systemic review 用于阴道给药的粘膜粘附聚合物系统：系统综述

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-07-31 DOI: 10.17488/rmib.44.2.4

Maryel Hernández-González, C. Rodríguez-González, J. Hernández-Paz, I. Olivas-Armendáriz

{"title":"Mucoadhesive polymeric systems for vaginal drug delivery: a systemic review","authors":"Maryel Hernández-González, C. Rodríguez-González, J. Hernández-Paz, I. Olivas-Armendáriz","doi":"10.17488/rmib.44.2.4","DOIUrl":"https://doi.org/10.17488/rmib.44.2.4","url":null,"abstract":"Intravaginal drug administration has many advantages in comparison to other delivery routes: its local and systemic effect, lower dosages, and easiness of administration. Furthermore, makes it a reliable and comfortable way of therapy. This route can be used to prevent and treat a wide range of conditions including, sexually transmitted infections (STIs), hormonal treatment, birth control, and cancer treatment. The dosage forms may vary from ovules, tablets, rings, gels, creams, films and many more; lately adding the mucoadhesiveness to the characteristics to reduce the waste of active molecules. This review focuses on the way mucoadhesive polymeric systems have been applied in vaginal delivery. This review presents a bibliographical compilation of results from various investigations published in scientific databases: Science Direct, SciELO, and PubMed Central. Results compiled demonstrate that the intravaginal drug administration can be an alternative form of medication for women with more stable and prolonged results than traditional routes requiring lower doses and avoiding the first-pass effect.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43267303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Type of Feet in a Mexican Population: Analysis of the Footprint Morphology and Literature Review 墨西哥人群的足型:足印形态分析及文献综述

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-06-13 DOI: 10.17488/rmib.44.2.2

J. L. Ramírez-Reyes, D. Gaytán-Macías, H. Quintana-Camacho, G. Galicia Aguilar, G. González Mancera

{"title":"Type of Feet in a Mexican Population: Analysis of the Footprint Morphology and Literature Review","authors":"J. L. Ramírez-Reyes, D. Gaytán-Macías, H. Quintana-Camacho, G. Galicia Aguilar, G. González Mancera","doi":"10.17488/rmib.44.2.2","DOIUrl":"https://doi.org/10.17488/rmib.44.2.2","url":null,"abstract":"Magnesium (Mg) is essential for the metabolic reactions of the human body and is known for its biocompatibility, its mechanical and physical properties are similar to human bone, which is why it is considered to have high potential in biomedical applications such as temporary and resorbable implants. Through surface modifications, the high tendency to corrosion of Mg could be controlled, such as biodegradable membranes that prevent the passage of chloride ions present in the human organism. To prepare the membrane, solutions of chitosan modified with gelatin and/or glutaraldehyde are used and by means of the electrospray method applied to protect the Mg. To simulate body fluid conditions a Kokubo saline solution (BFK) was prepared. The study focuses on evaluating the corrosion rate of Mg with a coating made of a chitosan electrosprayed membrane, applying electrochemical measurements of electrochemical impedance spectroscopy and linear polarization resistance. The key additive to improve the behavior of the membranes was observed with the use of gelatin, where the membrane with the best results lowing corrosion rates is the Mg CH+GE+GL system, which it was observed with very good physical integrity in the images of morphological analyzes of the surface after 30 days of exposure.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42891330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Type of Feet in a Mexican Population: Analysis of the Footprint Morphology and Literature Review 墨西哥人群的足型:足印形态分析及文献综述

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-05-01 DOI: 10.17488/rmib.44.2.1

J. A. Ramos-Frutos, I. Miguel-Andrés, M. León-Rodríguez, Luis Ángel Ortiz-Lango, S. Orozco-Villaseñor, A. Vidal-Lesso

{"title":"Type of Feet in a Mexican Population: Analysis of the Footprint Morphology and Literature Review","authors":"J. A. Ramos-Frutos, I. Miguel-Andrés, M. León-Rodríguez, Luis Ángel Ortiz-Lango, S. Orozco-Villaseñor, A. Vidal-Lesso","doi":"10.17488/rmib.44.2.1","DOIUrl":"https://doi.org/10.17488/rmib.44.2.1","url":null,"abstract":"The objective of this study was to analyze the footprint morphology and obtain the Chippaux-Smirak Index in a Mexican population to identify the type of feet and its prevalence. A database of images of the soles of both feet was analyzed. The database contained images of 1,014 persons between 2 and 73 years old from Guanajuato state, Mexico. Moreover, a literature review was performed to identify the type of feet in the Mexican population. It was observed that less than 17 % of the population have cavus foot (p= 0.018). Furthermore, less than 25 % of the population between 17 and 73 years have flatfoot 3 (p= 0.0079) in the left foot. Also, only nine articles related to the type of foot in the Mexican population were found, but most of them were performed on young population. The formation of the medial arc could be beyond the first decade of life and the relatively high prevalence of flatfoot in adult life should be studied. Finally, the results found can be useful for orthopedists, physiotherapists, clinicians, and parents who are concerned about the foot health of their children.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46640224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feasibility in the use of the UV-Visible region for the characterization of glucose in deionized water using Arduino 1 利用Arduino 1利用紫外可见区表征去离子水中葡萄糖的可行性

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-05-01 DOI: 10.17488/rmib.44.2.3

V. Sánchez-Monroy, Luis Enrique Barros-Martinez, Alejandro Hidalgo-Pedraza, Braulio Adriel Mendoza-Munguia, Miguel Sanchez-Brito

引用次数: 0

Neuroimaging Techniques for Neuroplasticity Quantification in Stroke Patients 脑卒中患者神经可塑性量化的神经影像学技术

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-05-01 DOI: 10.17488/rmib.44.2.5

Martín Emiliano Rodríguez-García, Norma Marín-Arriaga, Silvia Gabriel Macías-Arriaga, Bernardo Salazar-Cárdenas, Tania Ramírez-Rodríguez, Víctor Hugo Aparicio-Jiménez, Raquel Valdés-Cristerna, Jessica Cantillo-Negrete

{"title":"Neuroimaging Techniques for Neuroplasticity Quantification in Stroke Patients","authors":"Martín Emiliano Rodríguez-García, Norma Marín-Arriaga, Silvia Gabriel Macías-Arriaga, Bernardo Salazar-Cárdenas, Tania Ramírez-Rodríguez, Víctor Hugo Aparicio-Jiménez, Raquel Valdés-Cristerna, Jessica Cantillo-Negrete","doi":"10.17488/rmib.44.2.5","DOIUrl":"https://doi.org/10.17488/rmib.44.2.5","url":null,"abstract":"Neuroimaging techniques provide relevant information of the functional and anatomical status of the human brain. This information is of particular importance when a pathology, like stroke, produces a brain injury. In stroke patients, it has been determined that neuroplasticity is the primary recovery mechanism of the lost motor function. Due to worldwide high prevalence, especially in developing countries, it is necessary to continue the research of the recovery mechanisms involved in this pathology. To this end, functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI) are two of the most used neuroimaging techniques. In stroke patients, fMRI allows the analysis of the neural activity produced by the execution of motor tasks, whereas DTI provides structural information of the brain anatomy. In this narrative review, multiple studies that employ these neuroimaging techniques for quantification of neuroplasticity changes in stroke patients after undergoing a neurorehabilitation program are presented. Better understanding of these neuroplasticity changes would allow researchers to design and provide more beneficial rehabilitation schemes to stroke patients.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135703373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Novel Studies in the Designs of Natural, Synthetic, and Compound Hydrogels with Biomedical Applications 具有生物医学应用的天然、合成和复合水凝胶设计的新研究

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-05-01 DOI: 10.17488/rmib.44.2.6

Claudia Gabriela Cuéllar Gaona, María Cristina Ibarra Alonso, Rosa Idala Narro Céspedes, María Maura Téllez Rosas, Ricardo Reyna Martínez, Miriam Paulina Luévanos Escareño

{"title":"Novel Studies in the Designs of Natural, Synthetic, and Compound Hydrogels with Biomedical Applications","authors":"Claudia Gabriela Cuéllar Gaona, María Cristina Ibarra Alonso, Rosa Idala Narro Céspedes, María Maura Téllez Rosas, Ricardo Reyna Martínez, Miriam Paulina Luévanos Escareño","doi":"10.17488/rmib.44.2.6","DOIUrl":"https://doi.org/10.17488/rmib.44.2.6","url":null,"abstract":"Hydrogels are gaining widespread popularity in the biomedical field due to their extraordinary properties, such as biocompatibility, biodegradability, zero toxicity, easy processing, and similarity to physiological tissue. They have applications in controlled drug release, wound dressing, tissue engineering, and regenerative medicine. Among these applications, hydrogels as a controlled drug delivery system stands out, which releases active substances in precise amounts and at specific times. To explore the latest advances in the design of hydrogels, a literature review of articles published in indexed scientific journals, in Scopus and Science Direct, was carried out. This review aimed to discover and describe the most innovative hydrogel research with applications in the biomedical field; hydrogels synthesized with polymers of different origins were selected, such as; i. Natural (dextran, agarose, chitosan, etc.); ii. Synthetic (polyacrylamide, polyethylene glycol, polyvinyl alcohol, etc.); iii. Composites (interpenetrants, hybrid crosslinkers, nanocomposites, etc.). Comparative analysis revealed that hydrogels with composite materials show the most promise. These composite hydrogels combine the advantages of different polymers or incorporate additional components, offering enhanced properties and functionalities. In summary, hydrogels are versatile biomaterials with immense potential in biomedicine. Their unique properties make them suitable for diverse applications. However, innovative designs and formulations must continue to be explored to further advance the capabilities of hydrogels and expand their biomedical applications.","PeriodicalId":38670,"journal":{"name":"Revista Mexicana de Ingenieria Biomedica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47099562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Exercise Device for Older Adults 老年人运动器材的设计

Revista Mexicana de Ingenieria Biomedica Pub Date : 2023-02-06 DOI: 10.17488/rmib.44.1.1

Daniel Gallegos Barría, Belkys Amador Cáceres, Gabriela Martínez Bordes, Mauricio San Martín Correa

引用次数: 0