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2010 15th National Biomedical Engineering Meeting最新文献

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Safety distance for medical equipments based on 2G and 3G mobile systems 基于2G和3G移动系统的医疗设备安全距离
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479764
Zeynep Colak, S. Helhel, I. Basyigit, Ş. Özen
In this study, two different mobile communication operators provide services in Turkey have been chosen that each operator has both 2G and 3G services. In this study, electromagnetic interference distance to medical equipments located in The Medical School Hospital of Akdeniz University sourced from mobiled phones have been examined. Through out different units in the hospital environment, 30 different measurements carried out, and deterioration in audio and visual signal reaction of devices was found to be associated with the distance to mobile phones. Electromagnetic interference, particularly of the ECG and ted EEG device was observed, and exposure begins with range 1.25m distance.
在本研究中,两家不同的移动通信运营商在土耳其提供服务,每个运营商都有2G和3G服务。在本研究中,研究了来自手机的电磁干扰距离对位于Akdeniz大学医学院医院的医疗设备的影响。在医院环境的不同单位,进行了30种不同的测量,发现设备的视听信号反应的恶化与与移动电话的距离有关。观察到电磁干扰,特别是ECG和ted EEG设备,暴露始于1.25m距离。
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引用次数: 3
Automated classification of cancerous textures in histology images using quasi-supervised learning algorithm 基于准监督学习算法的组织学图像癌变纹理自动分类
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479863
Devrim Önder, S. Sarıoğlu, Bilge Karaçali
The aim of this work is to perform automated texture classification of histology slide images in health and cancerous conditions using quasi-supervised statistical learning method. Tissue images were acquired from histological slides of human colon and were separated into two groups in terms of normal and disease conditions. Texture feature vectors corresponding to tissue segments of each image were calculated using co-occurrence matrices. Different texture regions were determined by the quasi-supervised statistical learning method using texture features of normal and cancerous groups.
本工作的目的是使用准监督统计学习方法对健康和癌症条件下的组织学切片图像进行自动纹理分类。从人结肠组织切片中获取组织图像,按正常和病变情况分为两组。利用共现矩阵计算每张图像组织段对应的纹理特征向量。利用正常组和癌组的纹理特征,采用准监督统计学习方法确定不同的纹理区域。
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引用次数: 3
Predicting the existence of mycobacterium tuberculosis infection by Bayesian Networks and Rough Sets 基于贝叶斯网络和粗糙集的结核分枝杆菌感染存在性预测
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479850
T. Uçar, D. Karahoca, A. Karahoca
A correct diagnosis of tuberculosis can be only stated by applying a medical test to patient's phlegm. The result of this test is obtained after a time period of about 45 days. The purpose of this study is to develop a data mining solution which makes diagnosis of tuberculosis as accurate as possible and helps deciding if it is reasonable to start tuberculosis treatment on suspected patients without waiting the exact medical test results. In this research, we compared the use of Bayesian Networks and Rough Sets to predict the existence of mycobacterium tuberculosis. 503 different patient records having 30 separate input parameters are obtained from a private clinic and used in the entire process of this research. The Bayesian Network model classifies the instances with RMSE of 22% whereas Rough Set algorithm does the same classification with RMSE of 37%. As a result, Bayesian Network is an accurate and reliable method when compared with Rough Set method for classification of tuberculosis patients.
肺结核的正确诊断只能通过对病人的痰进行医学检查来确定。这个测试的结果是在大约45天的时间周期后得到的。本研究的目的是开发一种数据挖掘解决方案,使结核病的诊断尽可能准确,并有助于决定是否合理地开始对疑似患者进行结核病治疗,而无需等待确切的医学检查结果。在这项研究中,我们比较了使用贝叶斯网络和粗糙集来预测结核分枝杆菌的存在。从一家私人诊所获得503份不同的患者记录,有30个不同的输入参数,并在整个研究过程中使用。贝叶斯网络模型以22%的RMSE对实例进行分类,而粗糙集算法以37%的RMSE进行相同的分类。因此,与粗糙集方法相比,贝叶斯网络是一种准确可靠的结核病患者分类方法。
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引用次数: 4
Determination and anatomical mapping of thalamic stroke regions to anatomical atlas 丘脑脑卒中区解剖图谱的测定和解剖制图
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479741
Pinar Ozel, Ferda Ilgen Uslu, A. Deniz Duru, S. Burcu Erdogan, A. Gokyigit, A. Ademoglu
Stroke is one of the most significant public health problems. It is the third cause of mortality cause and first cause of paralysis in developed societies. Diagnosis of stroke is determined using clinical symptoms and several imaging modalities. Magnetic Resonance Imaging is one of these methods. Images obtained with these modalities are used by the physician on a routine clinical investigation. However, in some cases, the boundaries of the stroke tissue should be selected and mapped to the anatomical regions in the atlas. In this study, a graphical user interface is developed in order to identify and map the stroke regions to the digital anatomical atlas on registered and normalized MR images by SPM5. By using this interface, it is aimed to investigate the MR images of the stroke patients and perform specific therapy planning for different groups.
中风是最重要的公共卫生问题之一。在发达社会,它是第三大致死原因和第一大瘫痪原因。中风的诊断是通过临床症状和几种成像方式来确定的。磁共振成像就是其中一种方法。通过这些方式获得的图像被医生用于常规临床调查。然而,在某些情况下,中风组织的边界应该被选择并映射到图谱中的解剖区域。在这项研究中,开发了一个图形用户界面,以便通过SPM5在注册和归一化的MR图像上识别和映射笔画区域到数字解剖图谱。通过该接口,旨在研究脑卒中患者的MR图像,并针对不同组制定具体的治疗计划。
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引用次数: 1
Investigation of sleep stages identification with time-scale based parameters 基于时间尺度参数的睡眠阶段识别研究
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479848
Baycan Akcay, M. Engin, E. Z. Engin, Seyhan Coskun, Gungor Polat
In this study, the time-scale based analysis of EEG signals is shown for recognition of sleep stages. The EEG signals from healthy subjects are analyzed by Scalogram method in the time-scale domain. We observed that statistical parameters, the average gray level and measure of uniformity extracted from the energy distribution images, are found to be effective on the recognition of sleep stages.
在本研究中,基于时间尺度的脑电图信号分析被用于睡眠阶段的识别。采用尺度图法对健康受试者的脑电信号进行时域分析。我们发现,从能量分布图像中提取的统计参数,即平均灰度和均匀度,对睡眠阶段的识别是有效的。
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引用次数: 0
Intraoperative measurement of human gracilis muscle isometric forces as a function of knee angle 术中测量人体股薄肌等距力与膝关节角度的关系
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479847
F. Ates, U. Akgun, M. Karahan, C. Yucesoy
In this study, it is aimed at measuring for the first time the isometric force of human gracilis (G) muscle as a function of joint angle, intraoperatively. Experiments were conducted during anterior cruciate ligament reconstruction surgery. The knee angle was fixed at 120°, 90°, 60°, 30° and 0° respectively and active isometric forces of this muscle were measured using a buckle force transducer. Limited correlation was found between the anthropometric data of the subjects and the maximal G muscle force. Accordingly, we suggest that in interventions targeting G muscle, a patient specific approach needs to be planned for achieving optimal results. G muscle was shown to be functional for almost all of the knee angle range studied. This result indicates that G muscle contributes to the knee moment for even very low muscle lengths during major daily activities including walking and sit-to-stand motion.
在这项研究中,目的是首次测量术中人体股薄肌(G)的等距力作为关节角度的函数。在前交叉韧带重建手术中进行实验。将膝关节角度分别固定在120°、90°、60°、30°和0°,并使用卡扣力传感器测量该肌肉的主动等距力。受试者的人体测量数据与最大G肌力之间存在有限的相关性。因此,我们建议在针对G肌的干预措施中,需要计划一种针对患者的方法以获得最佳结果。G肌被证明在几乎所有的膝关节角度范围内都有功能。这一结果表明,在日常活动中,包括走路和坐立运动,即使肌肉长度很短,G肌也会对膝盖力矩起作用。
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引用次数: 1
Finding leukocyte region in microscopic images 在显微镜图像中发现白细胞区域
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479825
Mehmet Özçelik, H. Ş. Bilge
Microscopic analysis of images in the health care at the cellular level is one of the important methods for analysis and final diagnosis. In the diagnosis of blood diseases, although high technology systems provide very important information, for a definitive diagnosis microscopic smear examinations are needed. Microscopic examination is a time-consuming task for doctors. Therefore, in this study a basic system has been developed that may speed up the eye examination. In future, further development of this system may be an alternative to visual examination. From the basic blood cells (leukocyte, erythrocyte, platelet), we only focused on the locations of white blood cells in the image. In the development process of this system real blood smear images has been used. In this study iterative algorithms are not used instead of this, logical and morphological processes have been used. This allows faster operation of the system.
在卫生保健中,细胞水平的显微图像分析是分析和最终诊断的重要方法之一。在血液病的诊断中,尽管高科技系统提供了非常重要的信息,但要进行明确的诊断,还需要显微镜涂片检查。显微镜检查对医生来说是一项费时的工作。因此,本研究开发了一个基本系统,可以加快眼科检查的速度。未来,该系统的进一步发展可能成为视觉检查的替代方案。从基本血细胞(白细胞、红细胞、血小板)来看,我们只关注图像中白细胞的位置。在系统的开发过程中,采用了真实的血液涂片图像。在本研究中没有使用迭代算法,而是使用了逻辑和形态学过程。这使得系统的运行速度更快。
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引用次数: 0
The investigation of respiratory differences during different auditory stimuli in schizophrenia patients 精神分裂症患者不同听觉刺激时呼吸差异的研究
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479864
S. Akdemir, S. Kara, V. Bilgiç
Here, respiratory signals were recorded from schizophrenia patients and healthy controls. The purpose of this study is to compare the respiratory effects as respiration rate and depth of different auditory stimuli in these two groups. Signals derived from a strain gauge attached to the chest were recorded for 8 min. which includes silence, Classical Turkish Music (CTM) and acoustic white noise stimulation periods. Although CTM, evoked an increase in respiration rate and a decrease in respiration depth in the control group, only a respiration rate acceleration was found in the patient group. Results showed that in order to evaluate the responses of the autonomic system and to clarify the effects of CTM, different physiological measurements taken into account. As a result of this, the emotional changes could be evaluated quantitatively.
在这里,记录了精神分裂症患者和健康对照者的呼吸信号。本研究的目的是比较两组不同听觉刺激对呼吸速率和呼吸深度的影响。从附着在胸部的应变计获得的信号被记录了8分钟,其中包括沉默,古典土耳其音乐(CTM)和声学白噪声刺激时期。虽然中药在对照组中引起呼吸速率增加和呼吸深度降低,但在患者组中只发现呼吸速率加速。结果表明,为了评价自主神经系统的反应和阐明中药的作用,考虑了不同的生理测量。因此,可以对情绪变化进行定量评估。
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引用次数: 1
Graphical user interface for inverse problem of electrocardiography 图形用户界面的反问题的心电图
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479776
Alireza Mazloumi Gavgani, Y. Serinağaoğlu
In this study several inverse problem of electrocardiography (ECG) solution algorithms are combined to be accessed with a single graphical user interface. This interface is designed to be used for both research and educational purposes. Although this interface is mainly designed for the inverse problem of ECG it could be benefited to solve other inverse problems as well. This interface provides a number of error functions as well as a direct link to Map3D program which provides a 3 dimensional display of the results on the heart surface. It is certain that the quantitive and visual results displayed in this interface ease the comparison of different inverse ECG algorithms significantly.
在这项研究中,几个反问题的心电图(ECG)解决算法组合,以访问一个单一的图形用户界面。这个界面被设计用于研究和教育目的。虽然该接口主要是针对心电反问题设计的,但也可用于解决其他反问题。该接口提供了许多错误功能,并直接链接到Map3D程序,该程序提供了在心脏表面上显示结果的三维显示。可以肯定的是,该界面显示的定量和可视化结果大大简化了不同心电反算法的比较。
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引用次数: 0
Experimental assessment of the effects of epimuscular myofascial force transmission in the sensory level 感觉水平肌外筋膜力传递作用的实验评价
Pub Date : 2010-04-21 DOI: 10.1109/BIYOMUT.2010.5479813
O. Arikan, Burak Güçlü, P. Huijing, Can A. Yücesoy
It has been shown that non-tendinous structures play a major role in force transmission: epimuscular myofascial force transmission. Such force transmission was shown to cause substantial strain distributions along muscle fibers indicating serial heterogeneity of sarcomere lengths. Recent studies showed evidence on sizable inter-antagonistic epimuscular myofascial force transmission. It is hypothesized in this study that epimuscular myofascial force transmission can play a role in afferent signals generated in muscle sensory organs. The goal of our present study was to test this hypothesis by measuring the afferent firing rates of antagonistic muscles of the lower leg. Gastrocnemius muscle of the frog (Rana ridibunda) was given 1-5 mm of ramp-and-hold stretch via a pulley mechanism connected to its distal tendon. Keeping the ankle and knee angles fixed (at 100° and 120°, respectively), sensory unit recordings were taken from both tibial and peroneal branches of sciatic nerve simultaneously: afferent signals generated from both the lengthened gastrocnemius muscle and the restrained antagonistic muscles were recorded. Remarkably, imposing passive stretch resulted in a significant increase in the firing rates of the units of not only the lengthened muscle, but also of the restrained antagonists (p<;0,05 n=12). This novel finding suggests that due to epimuscular myofascial force transmission, stretching of the target muscle causes local length changes sensed by the sensory organs within the fibers of the antagonistic muscles, despite being restrained. Our results therefore provide a preliminary support to our hypothesis and are likely to have major implications on our understanding of the functioning of muscular mechanoreceptors.
研究表明,非肌腱结构在力传递中起主要作用:肌外肌筋膜力传递。这样的力传递被证明会导致沿着肌纤维的大量应变分布,表明肌节长度的系列异质性。最近的研究显示了相当大的拮抗肌外筋膜力传递的证据。本研究假设肌外肌筋膜力传递可能在肌肉感觉器官产生的传入信号中起作用。我们目前研究的目的是通过测量下肢拮抗肌肉的传入放电率来验证这一假设。通过连接蛙腓肠肌远端肌腱的滑轮机构对蛙腓肠肌(Rana ridibunda)进行1-5 mm的倾斜和保持拉伸。保持踝关节和膝关节角度固定(分别为100°和120°),同时从坐骨神经胫骨和腓侧分支获取感觉单元记录:记录从延长的腓肠肌和抑制的拮抗肌产生的传入信号。值得注意的是,施加被动拉伸不仅导致延长肌肉的单位射击率显著增加,而且抑制拮抗剂的单位射击率也显著增加(p<; 0.05 n=12)。这一新发现表明,由于肌外肌筋膜力传递,拉伸目标肌肉引起拮抗肌肉纤维内感觉器官感知的局部长度变化,尽管受到抑制。因此,我们的结果为我们的假设提供了初步的支持,并可能对我们对肌肉机械感受器功能的理解产生重大影响。
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引用次数: 0
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2010 15th National Biomedical Engineering Meeting
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