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2016 International Conference on Medical Engineering, Health Informatics and Technology (MediTec)最新文献

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A novel and robust automatic seed point selection method for breast ultrasound images 一种新的、鲁棒的乳腺超声图像种子点自动选择方法
Rashid Al Mukaddim, J. Shan, Irteza Enan Kabir, Abdullah Salmon Ashik, Rasheed Abid, Zhennan Yan, Dimitris N. Metaxas, B. Garra, Kazi Khairul Islam, S. Alam
Accurate segmentation of breast lesions is among the several challenges in the development of a fully automatic Computer-Aided Diagnosis system for solid breast mass classification. Many high level segmentation methods rely heavily on proper initialization and the seed point selection is usually the necessary first step. In this paper, a fully automatic and robust seed point selection method is proposed. The method involves a number of processing steps in both space and frequency domain and endeavors to incorporate the breast anatomical knowledge. Using a database of 498 images, we compared the proposed method with two other state-of-the-art methods; the proposed method outperforms both methods significantly with a success rate of 62.85% vs. 44.97% and 13.05% on seed point select.
乳腺病灶的准确分割是开发乳腺实体肿块分类全自动计算机辅助诊断系统的几个挑战之一。许多高级分割方法很大程度上依赖于正确的初始化,而种子点的选择通常是必要的第一步。提出了一种全自动、鲁棒的种子点选择方法。该方法涉及空间和频域的许多处理步骤,并努力结合乳房解剖知识。使用包含498张图像的数据库,我们将所提出的方法与另外两种最先进的方法进行了比较;该方法的种子点选择成功率分别为62.85%、44.97%和13.05%,显著优于两种方法。
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引用次数: 8
Performance analysis of an Ultra Wideband Antenna for Wireless Capsule Endoscopy 无线胶囊内窥镜超宽带天线性能分析
Md. Abu Saleh Tajin, Mohsin Ahmed, P. K. Saha
This paper proposes an Ultra Wideband Microstrip Patch Antenna for Wireless Capsule Endoscopy. An approximate model of the human gastrointestinal environment is designed with CST Microwave Studio, and the antenna is placed in the center. The antenna is small and bent in a fashion so that it can easily be accommodated inside a capsule. Ultra Wideband technology facilitates higher data rate, resulting in faster communication and high-quality images. Reflection Coefficient (S11), SAR, radiation pattern and power consumption are studied
提出了一种用于无线胶囊内窥镜的超宽带微带贴片天线。利用CST Microwave Studio设计了人体胃肠道环境的近似模型,并将天线置于中心位置。天线很小,弯曲的方式,使它可以很容易地容纳在一个胶囊。超宽带技术促进更高的数据速率,从而实现更快的通信和高质量的图像。研究了反射系数(S11)、SAR、辐射方向图和功耗
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引用次数: 6
Similarity analysis of patients' data: Bangladesh perspective 患者数据的相似性分析:孟加拉国视角
S. I. Khan, A. S. M. L. Hoque
Misspelling of names is a major problem of real world datasets and a single person is identified differently as its consequence. In Bangladesh, it is common that many people, in real, do not know their full name and many of Bangladeshi citizens are unable to pronounce their name correctly, even in the mother tongue. The Same person provides a different version of their name during taking a public service e.g., treatment in hospital. In almost all healthcare centers, a patient is asked and he reports his demographic data i.e. name, age, etc. orally. This creates ambiguity with misspelled names. In this paper, we have provided an algorithm to identify the same person correctly from the variation of names. Experimental results show that our proposed technique can successfully link records with high accuracy for noisy data like misspelled patient names etc.
姓名拼写错误是现实世界数据集的一个主要问题,其结果是单个人的身份识别不同。在孟加拉国,许多人实际上不知道自己的全名是很常见的,许多孟加拉国公民无法正确发音自己的名字,即使是用母语。同一个人在接受公共服务(例如在医院治疗)期间提供其姓名的不同版本。在几乎所有的医疗保健中心,都要求病人口头报告他的人口统计数据,即姓名、年龄等。这就造成了名字拼写错误的模糊性。在本文中,我们提供了一种从姓名变化中正确识别同一个人的算法。实验结果表明,本文提出的方法能够成功地以较高的准确率链接患者姓名拼写错误等有噪声的数据。
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引用次数: 7
Brain tumor identification through microstructure study using MRI MRI显微结构研究脑肿瘤鉴别
Shuvashis Das Gupta, K. S. Rabbani, Z. Mahbub
This work is focused on the quantitative study of Magnetic Resonance Imaging (MRI) for the purpose of identification of brain tumor by apparent diffusion coefficient (ADC) calculations of Diffusion-weighted images (DWI). Such diffusion-based measurements of cellular response can provide additional quantitative information for tissue characterization that strengthens the diagnosis carried out by conventional T1 and T2 weighted MRI. Initially, the DWI protocol were implemented on different test subjects with 6 sets of diffusion weighting factor by using a 3T MR scanner at National Institute of Neuroscience, Dhaka, Bangladesh. Afterward, based on the discussion with radiologists and specialists, two subjects (subject number 2 and 5) with suspected brain tumor were selected from the previous pool; ADC calculations were performed on the tumor region and the normal tissues on the symmetric region of the tumor on the other hemisphere. The comparison revealed a significant difference in ADC values of both regions, thus indicating a successful detection of the brain tumor. Such quantitative analysis provides a broader diagnostic scope as an addition with routine anatomical MRI and could play a crucial role in the treatment planning for pre and post-operative condition.
本研究的重点是定量研究磁共振成像(MRI)的目的是通过计算扩散加权图像(DWI)的表观扩散系数(ADC)来识别脑肿瘤。这种基于扩散的细胞反应测量可以为组织表征提供额外的定量信息,从而加强传统T1和T2加权MRI的诊断。最初,在孟加拉国达卡的国家神经科学研究所,使用3T MR扫描仪对不同的测试对象实施了6组扩散加权因子的DWI方案。之后,在与放射科医生和专家讨论的基础上,从先前的人群中选择两名疑似脑肿瘤的受试者(受试者2号和5号);在肿瘤区域进行ADC计算,另半球肿瘤对称区域的正常组织进行ADC计算。比较显示两个区域的ADC值有显著差异,因此表明成功检测了脑肿瘤。这种定量分析提供了更广泛的诊断范围,作为常规解剖MRI的补充,可以在术前和术后的治疗计划中发挥重要作用。
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引用次数: 1
Seizure detection system: A comparative study on features and fusions 癫痫检测系统:特征与融合的比较研究
M.K.M. Rahman, Md.A.Mannan Joadder, Tanvir Ahammed Ashique
Human being faces numerous types of neurological disorders. Among them epilepsy is the most frequent after stroke. Several techniques have been developed to identify seizure using EEG signals. The basic contribution of those works can be broadly categorized in three different areas: pre-processing, feature extraction and classification. In this work, we systematically compare different features and their fusions. We have explored how different features and fusions are performing for different cases of seizure classification. We have also investigated how specific combination of features and classifier can outperform others. In addition, we have also observed how information is distributed across different frequency bands for different cases of seizure classifications. Our detailed experimental results illustrate how we can obtain maximum performance by integrating both time and frequency (wavelet) domain features together with specific classifier.
人类面临着多种类型的神经系统疾病。其中癫痫是中风后最常见的。已经开发了几种利用脑电图信号识别癫痫发作的技术。这些工作的基本贡献可以大致分为三个不同的领域:预处理、特征提取和分类。在这项工作中,我们系统地比较了不同的特征及其融合。我们已经探讨了不同的特征和融合是如何执行不同的病例癫痫分类。我们还研究了特征和分类器的特定组合如何优于其他组合。此外,我们还观察到信息是如何在不同的扣押分类案例中分布在不同的频带上的。我们详细的实验结果说明了如何通过将时间和频率(小波)域特征与特定的分类器结合在一起来获得最大的性能。
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引用次数: 3
Predicting movement and laterality from Deep Brain Local Field Potentials 从脑深部局部场电位预测运动和偏侧
Abu Shafin Mohammad Mahdee Jameel, M. Mace, Shouyan Wang, R. Vaidyanathan, K. Mamun
The use of Deep Brain Local Field Potentials (LFP) in the process of connecting the human brain with artificial devices is one of the most promising fields in neural engineering. Inner mechanisms of our the central nervous system (CNS) can be understood through the study of LFPs. Of special importance are the the LFPs that come from subthalamic nucleus (STN) as they are related to the preparation, execution and imaging of movements. While researchers have focused on decoding movements and its laterality, left or right sided visually cued movements from STN LFPs, there is scope for using the same information for prediction of movements and laterality. In this paper, an algorithm is proposed that can be used to predict movement and laterality using STN LFPs. For this, wavelet packet transform (WPT) is used to generate separated frequency components of the LFPs. Then a selection of time and frequency domain features are used, namely time window based power features, causality features computed using granger causality and cross correlation, and frequency domain features computed using discrete cosine transform (DCT). Utilizing a weighted sequential feature selection process (WSFS), promising results are obtained from a Bayesian classifier along with cross validation procedure.
脑深部局部场电位(LFP)在人脑与人工装置连接过程中的应用是神经工程中最有前途的领域之一。通过对lfp的研究,我们可以了解中枢神经系统的内在机制。特别重要的是来自丘脑下核(STN)的lfp,因为它们与运动的准备、执行和成像有关。虽然研究人员专注于解码运动及其侧向性,从STN lfp中解码左侧或右侧视觉提示运动,但仍有可能使用相同的信息来预测运动和侧向性。本文提出了一种利用STN LFPs预测运动和侧向度的算法。为此,采用小波包变换(WPT)生成lfp的分离频率分量。然后选择时域和频域特征,即基于时间窗的功率特征,使用格兰杰因果关系和相互关系计算的因果关系特征,以及使用离散余弦变换(DCT)计算的频域特征。利用加权序列特征选择过程(WSFS),从贝叶斯分类器和交叉验证过程中获得了有希望的结果。
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引用次数: 1
A smartphone based application to improve the health care system of Bangladesh 一个基于智能手机的应用程序,以改善孟加拉国的医疗保健系统
Ahmed Imteaj, Muhammad Kamrul Hossain
Nowadays, smartphones have reached every hand and every home. As a result, people are making use of the beneficial mobile applications to make their everyday life easier. This paper focuses on development of a mobile application(app) to help providing an effective health care system. Using this app people can get numerous benefits like finding hospital information in the city, information about cabin, cabin booking with payment, intelligent suggestion on choosing suitable hospital, finding a doctor, emergency service calling, first aid information, alarm system for medication, Body Mass Index(BMI) calculator etc. This application will be a helping hand for people who find it difficult to select hospital, book cabin, contacting doctor for appointment or seeking help in emergency situation. Besides, it will help the masses in their everyday life by providing health care information, aid and medication information, medicine reminder system, etc.
如今,智能手机已经触手可及,家家户户。因此,人们正在利用有益的移动应用程序使他们的日常生活更轻松。本文的重点是开发一个移动应用程序(app),以帮助提供一个有效的医疗保健系统。使用这个应用程序,人们可以获得许多好处,如在城市查找医院信息,关于舱位的信息,舱位预订付款,智能建议选择合适的医院,寻找医生,紧急服务呼叫,急救信息,药物报警系统,身体质量指数(BMI)计算器等。这款应用程序将为那些在选择医院、预订舱位、联系医生预约或在紧急情况下寻求帮助时遇到困难的人提供帮助。此外,它还将通过提供医疗保健信息,援助和用药信息,药物提醒系统等,帮助群众在日常生活中。
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引用次数: 20
A localization algorithm for capsule endoscopy based on feature point tracking 基于特征点跟踪的胶囊内窥镜定位算法
K. Wahid, S. Kabir, Haider Adnan Khan, Abduallh Al Helal, M. A. Mukit, R. Mostafa
Wireless Capsule Endoscopy (WCE) has emerged as a popular non-invasive imaging tool for inspection of human Gastrointestinal (GI) tract. In order to identify the location of an anomaly or intestinal disease, the physicians need to know the exact location of the endoscopic capsule which influences the treatment plan. In this paper, we present a displacement estimation technique based on feature point tracking which utilizes the images captured by a commercial capsule, named PillCam. The proposed displacement calculation approach is tested using a virtual testbed. Results show that, with assistance of ASIFT-RANSAC algorithms, the proposed algorithm is able to estimate the linear displacement of the endoscopic capsule with an accuracy of 93.7% on average.
无线胶囊内窥镜(WCE)已成为一种流行的无创检查人类胃肠道的成像工具。为了确定异常或肠道疾病的位置,医生需要知道内窥镜胶囊的确切位置,这影响了治疗计划。在本文中,我们提出了一种基于特征点跟踪的位移估计技术,该技术利用了商业胶囊PillCam捕获的图像。利用虚拟试验台对所提出的位移计算方法进行了验证。结果表明,在ASIFT-RANSAC算法的辅助下,该算法能够估计出内镜囊的线性位移,平均准确率为93.7%。
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引用次数: 5
Bifurcation analysis of periodic action potentials of nerve cells in the FitzHugh-Nagumo model FitzHugh-Nagumo模型中神经细胞周期动作电位的分岔分析
N. Sultana, S. Das, M. Gani
We study the two-variable FitzHugh-Nagumo reaction-diffusion system for neuron excitation. The periodic action potentials of the nerve cells can be treated as the periodic traveling waves in one dimension. That motivates us to study the existence and the stability of periodic traveling waves in a one-parameter family of solutions. It is observed that periodic traveling waves change their stability by a stability change of Eckhaus type in a two-dimensional parameter plane. We determine the stability boundary between stable and unstable periodic traveling waves. We also calculate essential spectra of the periodic traveling waves.
我们研究了两变量FitzHugh-Nagumo反应-扩散系统的神经元激励。神经细胞的周期动作电位可以看作是一维的周期行波。这促使我们研究周期行波在单参数解族中的存在性和稳定性。观察到周期行波在二维参数平面上以埃克豪斯型稳定性变化改变其稳定性。我们确定了稳定和不稳定周期行波之间的稳定边界。我们还计算了周期行波的基本谱。
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引用次数: 0
Cardiovascular disease prognosis using effective classification and feature selection technique 利用有效的分类和特征选择技术预测心血管疾病
S. Sabab, Md. Ahadur Rahman Munshi, Ahmed Iqbal Pritom, Shihabuzzaman
Cardiovascular disease is a worldwide health problem and according to American Heart Association (AHA), it also causes an approximate death of 17.3 million each year. Therefore early detection and treatment of asymptomatic cardiovascular disease which can significantly reduce the chances of death. An important fact regarding such life-threatening disease prognosis is to identify the patient's physical state (healthy or sick) based on the analysis of health checkup data. This paper aims at optimized cardiovascular disease prognosis using different data mining techniques. We also provide a technique to improve the accuracy of proposed classifier models using feature selection technique. Patient's data were collected from Department of Computing of Goldsmiths University of London. This dataset contains total 14 attributes in which we applied SMO (SVM - Support Vector Machine), C4.5 (J48 - Decision Tree) and Naïve Bayes classification algorithms and calculated their prediction accuracy. An efficient feature selection algorithm helped us to improve the accuracy of each model by reducing some lower ranked attributes. Which helped us to gain an accuracy of 87.8%, 86.80% & 79.9% in case of SMO, Naïve Bayes and C4.5 Decision Tree algorithms respectively.
心血管疾病是一个全球性的健康问题,根据美国心脏协会(AHA)的数据,它每年也导致大约1730万人死亡。因此早期发现和治疗无症状心血管疾病可显著降低死亡机会。对于这种危及生命的疾病的预后,一个重要的事实是通过健康检查数据的分析来确定患者的身体状态(健康或生病)。本文旨在利用不同的数据挖掘技术优化心血管疾病的预后。我们还提供了一种使用特征选择技术来提高所提出的分类器模型的准确性的技术。患者数据收集自伦敦金史密斯大学计算机系。该数据集共包含14个属性,我们分别应用SMO (SVM - Support Vector Machine)、C4.5 (J48 - Decision Tree)和Naïve贝叶斯分类算法,并计算了它们的预测精度。一种高效的特征选择算法通过减少一些排名较低的属性来帮助我们提高每个模型的准确性。这使得我们在SMO、Naïve贝叶斯和C4.5决策树算法下分别获得了87.8%、86.80%和79.9%的准确率。
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引用次数: 21
期刊
2016 International Conference on Medical Engineering, Health Informatics and Technology (MediTec)
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