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2022 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES)最新文献

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Deep Learning Based Lumbar Metastases Detection and Classification from Computer Tomography Images 基于深度学习的计算机断层图像腰椎转移瘤检测与分类
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079431
I. Dheivya, S. Gurunathan
Metastasis in the vertebral body is a widely observed malignant disease. This study used Computer Tomography (CT) images of the lumbar region to detect and classify the metastases from the normal vertebral bodies. We also classify the two types of metastases; Sclerotic and Lytic. Segmentation of the vertebral body is done using a deep neural network. We compared the performance of our model with existing state-of-art models. Multi-resolution blocks in the proposed model help segment the vertebral body with lytic lesions in the margin of the region of interest. Through Wavelet image transformation, coefficients are derived from the vertebral region. Based on the extracted wavelet scattering features, vertebral bodies are classified into three classes; normal, sclerotic and lytic, using Principal Component Analysis (PCA).
椎体转移是一种广泛观察到的恶性疾病。本研究使用腰椎区域的计算机断层扫描(CT)图像来检测和分类来自正常椎体的转移。我们还对两种类型的转移进行了分类;硬化性和溶解性。椎体的分割是使用深度神经网络完成的。我们将我们的模型的性能与现有的最先进的模型进行了比较。提出的模型中的多分辨率块有助于在感兴趣区域的边缘分割具有溶解性病变的椎体。通过小波图像变换,从椎体区域导出系数。根据提取的小波散射特征,将椎体分为三类;正常,硬化和溶解,使用主成分分析(PCA)。
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引用次数: 0
Techniques to Infer Frequency-Specific Audibility of Speech Using Single-Channel Cortical Responses 利用单通道皮层反应推断语音频率特异性可听性的技术
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079496
Varsha Pendyala, W. Sethares, Viji Easwar
Hearing loss is a common congenital health condition that affects audibility of speech—critical for communication development in children—in a frequency-specific manner. The use of hearing aids to amplify speech is a common intervention approach. Since hearing aids are fit within the first few months of life, there is a need to assess the efficacy of hearing aids using objective methods like electroencephalography (EEG). In this paper, six binary classification tasks are designed for frequency-specific audibility assessment using EEG-based cortical responses to speech stimuli. Three techniques, two conventional and one based on machine learning are developed for classifying the cortical responses. These techniques are compared to identify the most accurate ones under the different classification tasks. The results in this paper show that the use of machine learning offers several benefits over conventional techniques for inferring frequency-specific hearing loss using cortical responses.
听力损失是一种常见的先天性健康状况,它以特定频率的方式影响言语可听性,而言语可听性对儿童的沟通发展至关重要。使用助听器放大言语是一种常见的干预方法。由于助听器在生命的最初几个月内是适合的,因此有必要使用脑电图(EEG)等客观方法来评估助听器的功效。在本文中,设计了六个二元分类任务,用于使用基于脑电图的皮层对语音刺激的反应来评估特定频率的可听性。三种技术,两种传统的和一种基于机器学习的皮层反应分类发展。将这些技术进行比较,以确定在不同分类任务下最准确的技术。本文的结果表明,与使用皮质反应推断频率特异性听力损失的传统技术相比,机器学习的使用提供了几个好处。
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引用次数: 0
Eye Tracking System Measurement of Saccadic Eye Movement with Different Illuminance Transmission Exposures during Driving Simulation 眼动追踪系统测量驾驶模拟中不同照度透射曝光下的跳眼运动
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079581
Azmir Ahmad, Saiful Azlan Rosli, Ai-Hong Chen
Numerous eye gaze changes of different fixation viewings are involved in driving. In addition, driving is done under various surrounding illuminance conditions. However, the effect of different illuminance transmissions on eye gaze movement was not explored during driving. This study investigated the saccadic eye movement using eye tracking system under different illuminance transmissions during driving simulation. The investigation was conducted on twenty-eight participants aged between 21 to 26 years old with proper driving licensing and experience. All participants had good vision status, with a good history of systemic, ocular, and binocular vision health. Using driving simulation, the participants were instructed to drive as they usually did, and their saccadic eye movement was recorded via the Dikablis eye tracker. The surrounding illuminance within the experimental room provided 100% transmission of 500 Lux, and the illuminance transmission was varied to 50%, 30%, and 15% using neural density filters. Under different illuminance transmissions, the saccadic eye movement showed no significant differences (p>0.05), even with the 15% transmission, both in the number and duration of saccadic eye movement. This showed similar eye gaze change specifically saccadic movement during driving simulation with different light transmissions. It could be concluded that eye gaze movement was not influenced by reduced illuminance when driving.
驾驶过程涉及不同注视对象的大量注视变化。此外,驾驶是在不同的周围照明条件下进行的。然而,不同照度传输对驾驶过程中眼球运动的影响并没有被研究。本研究利用眼动追踪系统研究了模拟驾驶过程中不同光照条件下的跳眼运动。调查对象为二十八名年龄介乎二十一至二十六岁,持有适当驾驶执照及有驾驶经验的人士。所有参与者视力状况良好,具有良好的全身、眼部和双眼视力健康史。通过模拟驾驶,研究人员指示参与者像往常一样开车,并通过Dikablis眼动仪记录他们的眼动。实验室内周围照度100%透射500 Lux,通过神经密度滤波器将照度透射率分别调整为50%、30%、15%。在不同的光照传输条件下,即使在15%的传输条件下,眼球跳动的次数和持续时间均无显著差异(p>0.05)。这表明在不同光传输的驾驶模拟过程中,眼睛的注视变化,特别是扫视运动是相似的。由此可见,驾驶时人眼注视运动不受光照降低的影响。
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引用次数: 0
Automated Artificial Leg Mechanism for Above-Knee Amputees 用于膝盖以上截肢者的自动假肢机构
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079687
A. L. N. Kit, B. V. Durairajah, C. S. Gobee
The expensive price of a prosthetic leg for above-knee amputees caused some of them to be unable to afford it. This is especially relevant for people with low income that live from paycheck to paycheck. With the addition of the aforementioned disability, they would be unable to earn income. Hence, this project aims to provide a cheap solution for above-knee amputees to restore their mobility. The solution that is explored is the use of an echo-control scheme that mimics the bending and flexion of the sound leg and transmits it to the prosthetic leg to mimic. Through the test that was done, the prosthetic leg was able to perform its function albeit its swing velocity is 10 times slower than that of a sound leg. Further enhancement in the future can consider implementing a system that allows the prosthetic leg to work independently from LabVIEW if needed as well as increasing the speed of the prosthetic leg during the gait cycle.Reduce the cost of prosthetic legs and make them more widely available to people especially those with low income.
对于膝盖以上截肢者来说,假腿的昂贵价格导致他们中的一些人买不起。这对那些靠薪水过日子的低收入人群尤其重要。加上上述残疾,他们将无法获得收入。因此,该项目旨在为膝盖以上截肢者提供一种廉价的解决方案,以恢复他们的活动能力。所探索的解决方案是使用回声控制方案,模仿声音腿的弯曲和弯曲,并将其传递给假腿来模仿。通过测试,虽然假腿的摆动速度比正常腿慢10倍,但仍能发挥其功能。未来的进一步改进可以考虑实现一个系统,允许义肢在需要时独立于LabVIEW工作,并提高义肢在步态周期中的速度。降低义肢的成本,让更多的人,尤其是低收入人群能够获得义肢。
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引用次数: 0
Mechanical Noise Affects Rambling and Trembling Trajectories During Quiet Standing 机械噪音影响漫步和颤抖轨迹在安静的站立
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079555
Jeshaiah Zhen Syuen Khor, A. Gopalai, B. Lan, S. A. Ahmad, D. Gouwanda
Falling is a serious worldwide public health issue, leading to heavy interest in the development of interventions to reduce fall risk. Mechanical noise has been shown to be a promising candidate in this regard - the application of mechanical noise to the foot sole has been shown to improve the sensitivity of the foot sole to pressure stimuli, thereby improving postural control and reducing fall risk. However, the mechanism by which mechanical noise affects the neural drive responsible for postural control is yet unknown. A single-blind randomized controlled study was conducted on the bodily sway of 19 healthy young subjects during quiet standing balance on a firm and compliant surface with and without introduced mechanical noise. The trajectory of the center of pressure (COP) of the subjects during balance was decomposed into its constituent rambling and trembling components, which reflected supraspinal and reflexive neural control respectively. On the compliant surface, the introduction of mechanical noise significantly reduced sway compared to control in the overall COP trajectory as well as the rambling and trembling trajectories. These findings indicate that mechanical noise can improve neural control of balance through both the supraspinal and reflexive neural pathways, leading to tighter bodily control and reduced bodily sway. These findings are particularly promising for the development of targeted noise-based assistive devices to reduce fall risk in demographics with neurological issues impairing motor control and balance.Clinical Relevance– This study demonstrates that mechanical vibratory noise introduced to the foot sole reduces both rambling and trembling of the COP during postural control, thus improving balance, with a wider bandwidth of mechanical noise having a larger effect. This has practical applications in the development of noise-based wearable devices for fall risk reduction.
跌倒是一个严重的全球公共卫生问题,导致人们对开发减少跌倒风险的干预措施非常感兴趣。在这方面,机械噪声已被证明是一个很有前途的候选者——将机械噪声应用于脚底已被证明可以改善脚底对压力刺激的敏感性,从而改善姿势控制并减少跌倒风险。然而,机械噪声影响负责姿势控制的神经驱动的机制尚不清楚。采用单盲随机对照研究方法,对19名健康青年受试者在坚硬柔顺的表面上安静站立平衡时的身体摇摆进行了研究。将被试在平衡过程中压力中心的运动轨迹分解为其组成部分漫游和颤抖,分别反映了棘上神经和反射神经的控制。在柔顺表面上,与控制整体COP轨迹相比,机械噪声的引入显著减少了摆动,以及漫游式和抖动轨迹。这些发现表明,机械噪音可以通过棘上神经通路和反射神经通路改善神经对平衡的控制,从而加强身体控制,减少身体摇摆。这些发现对于开发有针对性的基于噪音的辅助设备尤其有希望,以减少患有运动控制和平衡障碍的神经问题的人群的跌倒风险。临床相关性-本研究表明,在姿势控制过程中,脚底的机械振动噪声减少了COP的散漫和颤抖,从而改善了平衡,并且更宽的机械噪声带宽具有更大的效果。这在开发基于噪声的可穿戴设备以降低跌倒风险方面具有实际应用。
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引用次数: 0
Development of Real-Time Contact Force Control of a Collaborative Robot for Automated Ultrasound Scanning 超声自动扫描协同机器人的实时接触力控制研究
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079599
Ungku M.Z. Ungku Zakaria, S. M. Mustaza, M. H. M. Zaman, Ashrani Aizzuddin Abd. Rahni
For treating liver cancer, ablation is a minimally invasive treatment option, though it relies on image guidance such as ultrasound. There is a general continuing interest in automating medical ultrasound image acquisition due to it being widely used, lower cost and more portable compared to other imaging modalities. Earlier interest in using robots for automating sonography revolve around remote ultrasonography i.e. teleimaging. More recently there is increasing interest in semi-automated or fully automated image robotic image acquisition. In this work we envisage automated robot assisted ultrasound imaging for liver ablation surgery. We propose the use of a collaborative robot arm from Universal Robots™ (UR) which also have been increasingly popular in a variety of applications. In this work we show a preliminary proof of concept of a real-time force control system to control the contact force applied across a small angular range by the robot with respect to the surface a torso phantom. This is intended to represent the range of contact angles during ultrasound imaging. We use the Robot Operating System (ROS) and the UR Real-Time Data Exchange (UR-RTDE) interface to control the robot. We show that the contact force can be maintained around 9 N albeit with deviations due to the actual contact angle and surface deformation. The result will guide further development of automation of ultrasound scanning.
对于肝癌的治疗,消融术是一种微创治疗选择,尽管它依赖于超声等图像引导。由于与其他成像方式相比,自动化医学超声图像采集被广泛使用,成本更低,更便携,因此人们对自动化医学超声图像采集普遍存在持续的兴趣。早期对使用机器人自动化超声检查的兴趣主要围绕远程超声检查,即远程成像。最近,人们对半自动或全自动图像机器人图像采集越来越感兴趣。在这项工作中,我们设想自动机器人辅助超声成像肝脏消融手术。我们建议使用Universal Robots™(UR)的协作机器人手臂,这在各种应用中也越来越受欢迎。在这项工作中,我们展示了一个实时力控制系统的概念的初步证明,该系统可以控制机器人相对于躯干幻影表面在小角度范围内施加的接触力。这是用来表示超声成像过程中接触角的范围。我们使用机器人操作系统(ROS)和UR实时数据交换(UR- rtde)接口来控制机器人。我们表明,接触力可以保持在9牛左右,尽管由于实际接触角和表面变形而产生偏差。研究结果对超声扫描自动化的进一步发展具有指导意义。
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引用次数: 0
A Review on Sit-To-Walk Biomechanics for Healthy Young and Older Adults 健康青年和老年人坐-走生物力学研究综述
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079546
C. K. Perera, A. Gopalai, D. Gouwanda, S. A. Ahmad, S. Nurzaman
Sit-to-walk (STW) is a critical activity of daily living, yet literature mainly focuses on sit-to-stand (SiSt). Normally, during locomotion, gait takes place immediately after standing making STW functionally significant, with SiSt being a subset of the overall STW motion. There is a growing body of literature on STW kinematic and kinetic biomechanics. Hence, the objective of this review was to summarize the major findings on STW biomechanics for healthy young and older adults. The major findings include the STW movement phases, primary muscles involved, strategies and determinants. An understanding of STW would assist the design of assistive devices, treatment plans and interventions for older adults or individuals with movement impairments. This would increase the efficiency and applicability of interventions, while improving mobility, independence and reducing fall risk. Yet, further research on STW biomechanics, specifically for older adults and failed STW transitions are still lacking.
Sit-to-walk (STW)是一项重要的日常生活活动,但文献主要集中在sit-to-stand (SiSt)上。通常,在运动过程中,站立后立即发生步态,使STW具有功能意义,而SiSt是整个STW运动的一个子集。关于STW的运动学和动力学生物力学的文献越来越多。因此,本综述的目的是总结健康年轻人和老年人的STW生物力学的主要发现。主要发现包括STW运动阶段,主要肌肉参与,策略和决定因素。了解STW将有助于为老年人或运动障碍患者设计辅助设备、治疗计划和干预措施。这将提高干预措施的效率和适用性,同时改善流动性、独立性和减少跌倒风险。然而,关于STW生物力学的进一步研究,特别是针对老年人和失败的STW转换,仍然缺乏。
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引用次数: 0
An IoT Rehab Device: HHI-based NMES System for Motion Stimulation 物联网康复设备:基于hhi的运动刺激NMES系统
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079442
Ching Yee Yong, Terence Tien Lok Sia
Neuromuscular electrical stimulation (NMES) is a new technique applied in rehabilitation therapy for patients to restore or regain their confidence in motor function. This technique is significantly applied to patients suffering from spinal cord injury or stroke. However, there is still a gap for upper limb movement analysis due to the limited number of wearable sensors used in NMES. Therefore, this paper proposed a NMES system coupled with wearable sensors and IoT features for human-to-human interface (HHI) stimulation. The controller (therapist) can copy his/her motion, then paste it into the subject (patient). The controller’s motion signal was injected into the subject through a pulse signal and the subject will repeat the same motion due to stimulation. EMG was attached to the controller to collect the fingers’ flexion and extension. The data will be fed into the control unit for further subject stimulation. An accelerometer was attached to the subject’s fingers for repeating motion evaluation. Performance was calculated based on the difference in flexion and extension angles between controller and subject. The proposed system recorded a 10.3% of error for the first trial and this error was reduced to 1% after five trials.
神经肌肉电刺激(NMES)是一种用于康复治疗的新技术,用于恢复或恢复患者的运动功能信心。这项技术特别适用于脊髓损伤或中风患者。然而,由于NMES中使用的可穿戴传感器数量有限,上肢运动分析仍然存在空白。因此,本文提出了一种结合可穿戴传感器和物联网功能的NMES系统,用于人机界面(HHI)刺激。控制者(治疗师)可以复制他/她的动作,然后将其粘贴到受试者(患者)身上。控制器的运动信号通过脉冲信号注入到被试体内,被试会因为刺激而重复相同的运动。肌电图附着在控制器上,收集手指的屈伸情况。这些数据将被输入控制单元,用于进一步的受试者刺激。一个加速度计连接到受试者的手指重复运动评估。根据控制器和被试之间的屈伸角度差异计算性能。该系统在第一次试验中记录的误差为10.3%,经过五次试验后,该误差降至1%。
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引用次数: 0
Development of an Exercise Application to Support Physical Function Improvement and Training for Remote Workers 开发一种运动应用程序,以支持远程工作人员的身体功能改善和培训
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079645
A. Obata, Y. Sano, N. Hirose
We developed an exercise application to assist remote workers with physical dysfunction. 1) To determine physical dysfunction, it is necessary to objectively evaluate joint range of motion and muscle dysfunction. Twenty one employees had their standing, plank, one-leg stand, and overhead squat images captured. By using the skeletal coordinates obtained from the images, criteria for determining physical dysfunction were formulated in relation to subjective scores such as stiff shoulders and back pain. 2) On the basis of these results, we developed an exercise application in which physical dysfunction was judged in four different postures, and exercise for improvement was performed in accordance with the results, gradually increasing the intensity of exercise. Clinical Relevance— It shows the possibility of using objectively measured skeletal coordinates to assess physical stress.
我们开发了一个锻炼应用程序来帮助有身体功能障碍的远程工作者。1)判断肢体功能障碍,需要客观评价关节活动范围和肌肉功能障碍。拍摄了21名员工站立、平板支撑、单腿站立和头顶下蹲的照片。通过使用从图像中获得的骨骼坐标,确定身体功能障碍的标准与主观评分(如肩膀僵硬和背部疼痛)相关。2)在这些结果的基础上,我们开发了一个运动应用程序,在四种不同的姿势下判断身体功能障碍,并根据结果进行改善运动,逐渐增加运动强度。临床相关性-它显示了使用客观测量的骨骼坐标来评估身体压力的可能性。
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引用次数: 1
Modeling of Insulin Sensitivity for Sepsis-AKI and Sepsis Non-AKI
Pub Date : 2022-12-07 DOI: 10.1109/IECBES54088.2022.10079433
M. Farhah, M. Fatanah, M.M. Zulfakar, K.J. Ummu, R. Normy, M.Z. Syatirah, M.Z. N. Jihan
Sepsis-induced acute kidney injury (SAKI) patients are linked to high rates of death and morbidity. Additionally, infection and injury increase blood glucose levels, making glycemic control difficult. To control the glycemic level, insulin therapy is required to maintain blood glucose in a normal range. Hence, this study intended to investigate the sepsis and AKI factors in blood glucose outcomes, especially for successful glycemic control. In this study, blood glucose level, insulin administration, and insulin sensitivity between sepsis-AKI And sepsis non-AKI were compared, along with the stochastic model of the two cohorts. Using retrospective clinical data of 20 ICU patients aged 18 years old and above from Hospital University Sains Malaysia from September to November 2021, 10 sepsis AKI patients spent longer total treatment hours (2526) and longer length of stay (median = 8 days) and had a higher median APACHE II score (median = 28) compared to sepsis non-AKI. Additionally, they had higher blood glucose levels per cohort (median = 9.8mmol/L) and higher insulin administration (median = 0.5 U/hr). However, the statistical analysis determined no significant difference between sepsis AKI and sepsis non-AKI in blood glucose level per cohort, per patient metrics, insulin sensitivity, and insulin dosage. In conclusion, it can be concluded that sepsis contributes much to reducing insulin sensitivity and thus plays an important role in affecting the blood glucose level. Clinical Relevance – This demonstrates that, despite AKI, sepsis had more impact on insulin sensitivity and plays an essential role in blood glucose outcome and the success of glycemic control.
脓毒症引起的急性肾损伤(SAKI)患者与高死亡率和发病率有关。此外,感染和损伤会增加血糖水平,使血糖控制变得困难。为了控制血糖水平,需要胰岛素治疗以维持血糖在正常范围内。因此,本研究旨在探讨脓毒症和AKI因素对血糖结局的影响,特别是对成功控制血糖的影响。在这项研究中,我们比较了脓毒症- aki和脓毒症-非aki患者的血糖水平、胰岛素给药和胰岛素敏感性,并建立了两个队列的随机模型。回顾性分析马来西亚Sains医院大学2021年9月至11月20例18岁及以上ICU患者的临床资料,与脓毒症非AKI相比,10例脓毒症AKI患者总治疗时间更长(2526),住院时间更长(中位数= 8天),APACHE II评分中位数更高(中位数= 28)。此外,他们每个队列的血糖水平较高(中位数= 9.8mmol/L),胰岛素剂量较高(中位数= 0.5 U/hr)。然而,统计分析确定脓毒症AKI和脓毒症非AKI在每个队列的血糖水平、每个患者指标、胰岛素敏感性和胰岛素剂量方面没有显著差异。综上所述,脓毒症对降低胰岛素敏感性有重要作用,对血糖水平有重要影响。临床意义-这表明,尽管AKI,败血症对胰岛素敏感性的影响更大,在血糖结局和血糖控制的成功中起着至关重要的作用。
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引用次数: 0
期刊
2022 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES)
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