2013 Pan American Health Care Exchanges (PAHCE)最新文献

Training system for minimally invasive skills in the specialty of otolaryngology 耳鼻喉科微创技术培训体系

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568251

Alejandro Cuevas, D. Lorias, A. Minor, J. A. Gutierrez, R. Martinez

引用次数: 0

Classification of premature ventricular contraction based on Discrete Wavelet Transform for real time applications 基于离散小波变换的室性早搏实时分类

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568330

A. Orozco-Duque, F. Martínez-Tabares, J. Gallego, C. A. Rodriguez, I. D. Mora, Germán Castellanos-Domínguez, J. Bustamante

{"title":"Classification of premature ventricular contraction based on Discrete Wavelet Transform for real time applications","authors":"A. Orozco-Duque, F. Martínez-Tabares, J. Gallego, C. A. Rodriguez, I. D. Mora, Germán Castellanos-Domínguez, J. Bustamante","doi":"10.1109/PAHCE.2013.6568330","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568330","url":null,"abstract":"Develop of wearable cardiac monitors is becoming an important field of research because Cardiovascular disease is the leading cause of morbidity and mortality in the world. Real time arrhythmias detection algorithms are necessary to improve this kind of devices. This article presents a premature ventricular contraction detection method based on Discrete Wavelet Transform for preprocessing, segmentation and feature extraction. Discrete Wavelet Transform (DWT) is used to perform baseline wander and powerline noise reduction algorithm. Three different feature spaces based on wavelet coefficients are tested. Principal Component Analysis (PCA) is applied to reduce dimension into a lower feature space. K Nearest Neighbor (KNN) and Support Vector Machine (SVM) are developed and compared in terms of both accuracy and computational cost. Specificity of 97.18% and sensitivity of 96.47% with a prediction time of 0.47ms are accomplished. Computational burden is measured and compared with other methods to ensure that the developed method can be implemented in real time.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116607057","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: 11

Static transcranial magnetic stimulation: NO LONGER STATIC 静态经颅磁刺激:不再是静态的

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568314

A. Gonzalez-Castaño, C. V. Rizzo-Sierra, F. E. Leon-Sarmiento

引用次数: 0

Key Issues of the healthcare technology management in life cycle: Results of a brainstorming 生命周期中医疗技术管理的关键问题:头脑风暴的结果

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568329

E. A. Torres, N. Escobar

引用次数: 1

Development of a tool for managing and analyzing technology and maintenance indicators hospital 医院技术与维护指标管理与分析工具的开发

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568243

N. V. Guarín, S. P. Usaquén-Perilla

引用次数: 2

Ocular motility analysis in patients with anophthalmia using digital image processing techniques 用数字图像处理技术分析无眼症患者的眼运动

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568225

V. Corchuelo, J. D. Pulgarin, A. Dolmetsch

{"title":"Ocular motility analysis in patients with anophthalmia using digital image processing techniques","authors":"V. Corchuelo, J. D. Pulgarin, A. Dolmetsch","doi":"10.1109/PAHCE.2013.6568225","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568225","url":null,"abstract":"The anophthalmia is an eye disease identified by the absence of this, and its solution requires not only a coupled prosthetic eye but also a surgery to generate motility. Pre, post-operative and rehabilitation results of eye motility are required by health specialists. However, the motility analysis techniques currently used, provide only a qualitative evaluation. This paper presents a systematic tool to quantify ocular motility in lateral, nasal, upper and lower eye movements, with the help of image acquisition and digital processing techniques. An interface that also allows relating pre and postoperative patient data, as well as, relevant data to the process of rehabilitation, was developed by the authors. This diagnostic tool created as part of this research is noninvasive, the test time is shorter and more comfortable in comparison to currently used techniques and tools, and provides a measurable value of improved prosthetic motility patient's eyeball. This tool development was verified on patients with unilateral anophthalmia with age between 7 and 15 years old at Clínica de Oftalmología in Cali, Colombia.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"98 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134244688","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

Coronary artery segmentation in X-Ray Angiographic image by means of a shape based level set method 基于形状的水平集分割x射线血管造影图像中的冠状动脉

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568258

J. Brieva

引用次数: 3

Finite element analysis of meniscal root attachments 半月板根部附着体的有限元分析

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568311

D. Villegas, T. Haut-Donahue

引用次数: 0

Manufacturing and characterization of hydroxyapatite foams produced by gel-casting technique 凝胶铸造法制备羟基磷灰石泡沫的制备及表征

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568289

J. I. González, D. Escobar, C. Ossa

{"title":"Manufacturing and characterization of hydroxyapatite foams produced by gel-casting technique","authors":"J. I. González, D. Escobar, C. Ossa","doi":"10.1109/PAHCE.2013.6568289","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568289","url":null,"abstract":"The gel-casting technique has been implemented by several investigators, due to the fact that it presents a great potential to manufacture porous ceramic bodies with high mechanical resistance, complex geometries, and high dimensional precision. The hydroxyapatite (HA) is a ceramic that allows not also the bioactive fixation, but cells and nutrients invasion to promote the tissue regeneration; however, it presents low mechanical resistance. In this study, hydroxyapatite foams -using gel-casting with two different monomers and percent solids of 40 and 50%- were prepared. Obtained foams were characterized by X Ray-Diffraction (XRD), by Scanning Electron Microscope (SEM), by porosity and interconnectivity determination and by bioactivity assay. The results shown that the manufactured foams present open and interconnected porous with approximate size of 200 μm, porosity of 67%, and interconnectivity of 60%. The immersion tests in SBF confirmed the bioactivity of the hydroxyapatite, which demonstrates that this is a high potential process to manufacture porous bodies with useful characteristics in tissue engineering.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116361797","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

Analyzing wall thickness of artery phantoms in a noninvasive way 无创动脉影壁厚分析

2013 Pan American Health Care Exchanges (PAHCE) Pub Date : 2013-07-25 DOI: 10.1109/PAHCE.2013.6568356

A. Ramos, I. Bazán, C. Negreira, J. Brum, A. Rosales, F. Gallegos

{"title":"Analyzing wall thickness of artery phantoms in a noninvasive way","authors":"A. Ramos, I. Bazán, C. Negreira, J. Brum, A. Rosales, F. Gallegos","doi":"10.1109/PAHCE.2013.6568356","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568356","url":null,"abstract":"Research looking for the achieving of an accurate measurement of thickness changes in thin biological walls (e.g. of blood vessels), is a promising work line in the medical area, because it would provide the bases to analyze the possibility of attaining early diagnoses of some diseases such as hypertension or atherosclerosis. But, to obtain a non-invasive estimation of these parameters on internal tissues, currently presents many difficulties that must be overcome. The use of high-frequency ultrasonic systems appears to offer a possible solution. In fact, the application of conventional ultrasonic imaging has shown this, but the spatial resolution related to this commercial option is not sufficient for a thickness evaluation with sufficient clinical significance, which would require accuracies of few microns. In this paper, some preliminary results of applying a new broadband ultrasonic procedure, recently developed by the authors for thickness measurement purposes, are analyzed for sub-millimeter layers made of materials similar (phantoms) to that of the biological tissues to be encountered into the artery walls. Two optional algorithms for estimating the power spectral density of the multi-pulse signals are assessed with some experimental echoes. Their potential resolutions and capabilities to provide accuracies around a micron are comparatively analyzed, for walls thickness estimation.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121985655","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: 3