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

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Improved strain estimation using a novel 1.5D approach: Preliminary results 使用一种新的1.5D方法改进应变估计:初步结果
Irteza Enan Kabir, Rasheed Abid, Abdullah Salmon Ashik, Kazi Khairul Islam, S. Alam
Changes in biological tissues change their elasticity. Elasticity imaging enjoys an ever increasing role in disease diagnosis. In elastography, tissue strain is estimated using signal processing. Strain is conventionally calculated from estimated displacements between the pre- and post-compression ultrasonic echo signals. In this paper, we introduce a novel 1.5D strain estimator. The proposed algorithm uses 1D windows for fast computation, but searches in the lateral direction to account for non-axial motion. The performance of our method outperforms traditional methods, especially in the presence of higher applied strain. The image quality also improves significantly.
生物组织的变化改变了它们的弹性。弹性成像在疾病诊断中的作用越来越大。在弹性学中,组织应变是用信号处理来估计的。应变通常是根据预压缩和后压缩超声回波信号之间的估计位移来计算的。本文介绍了一种新型的1.5D应变估计器。该算法使用一维窗口进行快速计算,但在横向搜索以考虑非轴向运动。我们的方法的性能优于传统的方法,特别是在存在较高的施加应变。图像质量也显著提高。
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引用次数: 8
Bifurcation analysis of periodic action potentials of cardiac excitation in the Aliev-Panfilov model Aliev-Panfilov模型中心脏兴奋周期动作电位的分岔分析
S. Das, N. Sultana, Md. Ariful Islam Arif, M. Gani
Aliev-Panfilov model is a well-known and well-studied model to understand cardiac excitation. In this paper, we consider the Aliev-Panfilov reaction-diffusion system of PDE to understand the mechanism of ventricular fibrillation. It is known that the electrical activities of the heart cells create action potentials periodically. That is why we study the bifurcation analysis of periodic traveling waves (PTWs). We also determine the locus of solutions where the stable waves change their behavior. A stability change of Eckhaus type is observed in our outcomes. We compute the essential spectrum of the waves to comprehend these phenomena.
Aliev-Panfilov模型是理解心脏兴奋的一个众所周知且研究得很好的模型。本文考虑PDE的Aliev-Panfilov反应-扩散系统来了解心室颤动的机制。众所周知,心脏细胞的电活动周期性地产生动作电位。这就是我们研究周期行波分岔分析的原因。我们还确定了稳定波改变其行为的解轨迹。在我们的结果中观察到埃克豪斯型的稳定性变化。我们计算波的基本谱来理解这些现象。
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引用次数: 0
An unsupervised segmentation algorithm for breast ultrasound images using local histogram features 基于局部直方图特征的乳腺超声图像无监督分割算法
M. Rahman
Several segmentation methods have been presented for breast ultrasound (BUS) images. Unfortunately most of them are supervised and semi-automatic in nature. In this paper, a complete unsupervised algorithm for BUS image segmentation algorithm using local intensity and texture histograms features has been proposed. The texture and intensity features are combined in the clustering process. Initially the image is filtered using a texture preserving de-noising filter. A new texture feature is extracted from the filtered image. Using these features, employing a non-parametric Bayesian clustering method, image is segmented. This clustering is completely unsupervised in nature as no seeding or learning is required for this algorithm. Qualitative and quantitative segmentation results of images from BUS image databases prove the competitiveness of the proposed algorithm.
针对乳腺超声图像,提出了几种分割方法。不幸的是,他们中的大多数都是受监督的,而且是半自动的。本文提出了一种基于局部强度和纹理直方图特征的BUS图像完全无监督分割算法。在聚类过程中结合纹理和强度特征。首先使用纹理保持去噪滤波器对图像进行滤波。从滤波后的图像中提取新的纹理特征。利用这些特征,采用非参数贝叶斯聚类方法对图像进行分割。这种聚类本质上是完全无监督的,因为该算法不需要播种或学习。对来自BUS图像数据库的图像进行定性和定量分割,结果证明了该算法的竞争力。
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引用次数: 1
A machine learning based approach for the detection and recognition of Bangla sign language 基于机器学习的孟加拉语手语检测与识别方法
M. Hasan, Tanvir Hossain Sajib, Mrinmoy Dey
Speech impaired people are detached from the mainstream society due to the lacking of proper communication aid. Sign language is the primary means of communication for them which normal people do not understand. In order to facilitate the conversation conversion of sign language to audio is very necessary. This paper aims at conversion of sign language to speech so that disabled people have their own voice to communicate with the general people. In this paper, Hand Gesture recognition is performed using HOG (Histogram of Oriented Gradients) for extraction of features from the gesture image and SVM (Support Vector Machine) as classifier. Finally, predict the gesture image with output text. This output text is converted into audible sound using TTS (Text to Speech) converter.
语言障碍人士由于缺乏适当的沟通帮助而与主流社会脱节。手语是他们沟通的主要手段,正常人不懂。为了方便对话,将手语转换成音频是非常必要的。本文旨在将手语转化为语言,使残疾人有自己的声音与普通人交流。本文采用HOG (Histogram of Oriented Gradients)从手势图像中提取特征,SVM (Support Vector Machine)作为分类器进行手势识别。最后,用输出文本预测手势图像。使用TTS(文本到语音)转换器将输出文本转换为可听到的声音。
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引用次数: 14
Microwave ablation technique (MWA) for cancer treatment: Simulation of single Slot MCA for different slot position 微波消融技术在肿瘤治疗中的应用:不同槽位的单槽微波消融模拟
A. Razib, K.A. Hossain, S. Hossain
One of the effective options to kill cancer cell is Microwave ablation (MWA). In this process radiation is focused on the desired areas, ensuring appropriate temperature distribution without damaging the surrounding tissues. To effectively treat cancer, Slot coaxial antennas can be used for producing a heat absorption and temperature distribution model. In this work, it is has been demonstrated that when the antenna slot position is at 50% of the tumor higher SAR value (about 5.78 kW/kg peak SAR) and larger heat ablation area is achieved; while changing the slot position more good cells get destroyed but changing slot position also decreases temperature (The maximum temperature within the breast tissue is 203°C for 50% slot position for t = 2 min and for the same duration of time 156°C and 185°C were found for 25% and 75% slot position respectively). Lastly the results reveals that for the presented Slot Coaxial Antenna at 2.45GHz and 10W power; for optimized and efficient impact, the microwave heating should be continued for 2 min at 50% slot position; less time would not cover all the tumor cell and changing the slot position will result in damaging more good cells.
微波消融(MWA)是杀死癌细胞的有效方法之一。在这个过程中,辐射集中在所需的区域,确保适当的温度分布,而不损害周围的组织。为了有效地治疗癌症,可以使用槽同轴天线来产生吸热和温度分布模型。研究表明,当天线槽位在肿瘤的50%位置时,可以获得更高的SAR值(峰值SAR约5.78 kW/kg)和更大的热消融面积;当改变槽位位置时,更多的好细胞被破坏,但改变槽位位置也会降低温度(当槽位位置为50%时,乳房组织内的最高温度为203℃,持续时间为t = 2 min,而当槽位位置为25%和75%时,乳房组织内的最高温度分别为156℃和185℃)。最后,研究结果表明,对于所设计的槽同轴天线,在2.45GHz和10W功率下;为达到最佳效果和有效影响,应在50%槽位继续微波加热2分钟;更少的时间不能覆盖所有的肿瘤细胞,改变槽的位置会导致损伤更多的好细胞。
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引用次数: 7
A smart system for driver's fatigue detection, remote notification and semi-automatic parking of vehicles to prevent road accidents 一种用于驾驶员疲劳检测、远程通知和车辆半自动停车的智能系统,以防止道路交通事故
Alamgir Hossan, Faisal Bin Kashem, Md. Mehedi Hasan, S. Naher, Md. Ismail Rahman
Drowsy driving is one of the main reasons of road accidents. Different techniques have been reported in literature to detect driver's drowsiness, but almost all the prevailing systems only alert the driver if drowsiness is detected. Consequently, the drowsy driver continues driving, with a high risk of devastating accident. In this paper, we proposed and verified an EEG based system which not only alerts the driver by alarm, but also puts the vehicle in semiautomatic parking mode by controlling fuel supply if drowsiness is detected. At the same time, it reports nearby police station by SMS which contains necessary information to take essential steps locating the vehicle. Stored EEG signals, obtained with wireless wearable headsets from numerous subjects in different conditions by different research groups, were used in this work. Power spectrum analyses were carried out in MATLAB to determine the dominant frequency components in the brain signals. The slow wave to fast wave ratios of EEG activities were assessed for a number of epochs to determine driver's drowsiness. GPS and GSM modules were used with Arduino MEGA for tracking, remote notification and servomotor control. Performance of the proposed system was evaluated by stored data which confirmed its feasibility and reliability.
疲劳驾驶是交通事故的主要原因之一。文献中已经报道了不同的技术来检测驾驶员的困倦,但几乎所有的主流系统都只在检测到困倦时提醒驾驶员。因此,昏昏欲睡的司机继续开车,有很高的毁灭性事故的风险。在本文中,我们提出并验证了一种基于脑电图的系统,该系统不仅通过报警提醒驾驶员,而且在检测到困倦时通过控制供油使车辆进入半自动停车模式。同时,它通过短信向附近的警察局报告,其中包含必要的信息,以便采取必要的步骤来定位车辆。在这项工作中,使用了不同研究组在不同条件下使用无线可穿戴耳机从众多受试者中获取的存储的脑电图信号。在MATLAB中进行功率谱分析,确定脑信号中的主导频率成分。通过对多个时段的脑电活动慢波与快波比值进行评估,以确定驾驶员的困倦程度。GPS和GSM模块配合Arduino MEGA进行跟踪、远程通知和伺服电机控制。通过存储数据对系统性能进行了评价,验证了系统的可行性和可靠性。
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引用次数: 16
Pressure transfer function for aorta model in cardiovascular simulator: Feasibility study of wearable central blood-pressure gauge 心血管模拟器主动脉模型的压力传递函数:可穿戴式中心血压计的可行性研究
Kyoji Nakajo, Shuji Takahashi, Y. Shiraishi, Yudai Komori, Kazuhiro Motegi, H. Miyashita
A noninvasive estimation of central blood-pressure is required by the researchers or the medical practitioners in the cardiovascular field. Up to now, a simulation based approach has been pursued by many researchers and the practical results are obtained. As the progresses in the electrical engineering, the possibility that a wearable central blood-pressure gauge can be realized is increased. This study shows that the aorta model in the cardiovascular simulator can be equivalently transformed to the pressure transfer function and gives the feasibility of wearable central blood-pressure gauge.
无创中心血压的估计是研究人员或医疗从业者在心血管领域的要求。迄今为止,许多研究者都在探索一种基于仿真的方法,并取得了实际效果。随着电子工程技术的进步,实现可穿戴式中心血压计的可能性越来越大。本研究表明,心血管模拟器中的主动脉模型可以等效转化为压力传递函数,给出了可穿戴式中心血压计的可行性。
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引用次数: 2
A voice controlled robot for continuous patient assistance 一种语音控制的机器人,用于持续帮助病人
Sashanka Kumar Pramanik, Z. Onik, Nadia Anam, Md Mahsin Ullah, Ahmed Saiful, S. Sultana
In this project, we have aimed to design a fully voice controlled robot which can work round the clock as an assistant in hospitals. The intention was to design a cost-effective robot which can work in the absence of a nurse, thus reducing overload on workers or solving staff shortage situations. This robot is also energy efficient and does not consume so much of power. The design chosen for the robot is such that it can move freely for its size and have user-friendly features for a hospital and patient to take care of his/her needs.
在这个项目中,我们的目标是设计一个完全语音控制的机器人,可以作为医院的助手24小时工作。其目的是设计一种具有成本效益的机器人,可以在没有护士的情况下工作,从而减少工人的负担或解决人员短缺的情况。这个机器人也很节能,不会消耗太多的能量。为机器人选择的设计是这样的,它可以自由移动的大小,并具有用户友好的特点,医院和病人照顾他/她的需求。
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引用次数: 5
An improved chromosome sorting algorithm by permutation group-based inverted block-interchanges 一种改进的基于置换群的倒块交换的染色体排序算法
Afrida Tabassum, Wali Mohammad Abdullah, Najia Manjur, Rehennuma Islam, Ashfaque Ahmed, Shourav Imtiaz Morshed, Rizia Iqbal Tinni, Kazi Lutful Kabir, M. Islam
In comparative genomics, a common issue is to find the shortest course of operations for the transformation of one genome into another. During rejoining the blocks, inverted block interchange, a more distinct form of block interchange, gives the option to the blocks to reverse their orientation. In this particular paper, we have presented an improved algorithm to sort circular chromosomes by inverted block interchanges and also compared the performances with a previous algorithm. Our experimental findings justify the fact that accommodation of inverted block interchange ensures results with equal or less number of series of operations in terms of block interchanges.
在比较基因组学中,一个常见的问题是找到将一个基因组转化为另一个基因组的最短操作过程。在重新连接块的过程中,反向块交换(一种更独特的块交换形式)为块提供了反转其方向的选项。在本文中,我们提出了一种改进的基于倒块交换的圆形染色体排序算法,并与之前的算法进行了性能比较。我们的实验结果证明了这样一个事实,即在块交换方面,容纳倒块交换确保了相等或更少的操作序列的结果。
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引用次数: 0
Classification of Motor Imagery signal using wavelet decomposition: A study for optimum parameter settings 基于小波分解的运动图像信号分类:最佳参数设置的研究
Md.A.Mannan Joadder, M.K.M. Rahman
Motor Imagery (MI) based Brain Computer Interface (BCI) is an assistive technology, which translates the brain signals into commands to control external devices. A basic MI classification involves different steps of signal processing such as pre-processing, spatial filter, feature extraction and classification. There are numerous combinations of these steps that we can explore to achieve the better result. In this work we have systematically compared different parameter settings for wavelet-based feature extraction in search for optimum performance. Our detailed experimental results illustrate how we can choose appropriate wavelet function, order, number of decomposition levels and finally selection of coefficient at different levels.
基于运动图像(MI)的脑机接口(BCI)是一种辅助技术,它将大脑信号转化为控制外部设备的命令。一个基本的MI分类包括信号处理的不同步骤,如预处理、空间滤波、特征提取和分类。我们可以探索这些步骤的许多组合,以获得更好的结果。在这项工作中,我们系统地比较了基于小波的特征提取的不同参数设置,以寻求最佳性能。详细的实验结果说明了如何选择合适的小波函数、阶数、分解层数以及不同层系数的选择。
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引用次数: 7
期刊
2016 International Conference on Medical Engineering, Health Informatics and Technology (MediTec)
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