2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)最新文献_第2页

Experimental validation of dual PPG local pulse wave velocity probe 双PPG局部脉冲波速探头的实验验证

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-07 DOI: 10.1109/MeMeA.2017.7985911

P. Nabeel, S. Karthik, J. Joseph, M. Sivaprakasam

{"title":"Experimental validation of dual PPG local pulse wave velocity probe","authors":"P. Nabeel, S. Karthik, J. Joseph, M. Sivaprakasam","doi":"10.1109/MeMeA.2017.7985911","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985911","url":null,"abstract":"A novel dual photoplethysmograph (PPG) probe and measurement system for local pulse wave velocity (PWV) is proposed and demonstrated. The developed probe design employs reflectance PPG transducers for non-invasive detection of blood pulse propagation waveforms from two adjacent measurement points (28 mm apart). Transit time delay between the continuously acquired dual pulse waveform was used for beat-to-beat local PWV measurement. An in-vivo experimental validation study was conducted on 10 healthy volunteers (8 male and 2 female, 21 to 33 years of age) to validate the PPG probe design and developed local PWV measurement system. The proposed system was able to measure carotid local PWV from multiple subjects. Beat-to-beat variation of baseline carotid PWV was less than 7.5% for 7 out of 10 subjects, a maximum beat-to-beat variation of 16% was observed during the study. Variation in beat-to-beat carotid local PWV and brachial blood pressure (BP) values during post-exercise recovery period was also examined. A statistically significant correlation between intra-subject local PWV variation and brachial BP parameters was observed (r > 0.85, p < 0.001). The results demonstrated the feasibility of proposed PPG probe for continuous beat-to-beat local PWV measurement from the carotid artery. Such a non-invasive local PWV measurement unit can be potentially used for continuous ambulatory BP measurements.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125741282","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: 12

Development of a test protocol to evaluate infant CPR training manikins 制定评估婴儿心肺复苏术训练模型的测试方案

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-07 DOI: 10.1109/MeMeA.2017.7985839

Nemanja Babic, N. Baddour, M. Fenech

{"title":"Development of a test protocol to evaluate infant CPR training manikins","authors":"Nemanja Babic, N. Baddour, M. Fenech","doi":"10.1109/MeMeA.2017.7985839","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985839","url":null,"abstract":"The lack of well-documented open-source test protocols for the evaluation of cardiopulmonary resuscitation (CPR) training manikins is an important issue for the assessment of CPR training manikins. Test protocols provide reliable information for validating manikin models. Thus, the objective of this work is to create a cross-platform, open-source LabVIEW program for the assessment of the manikin thoracic force-displacement response and force and chest-depth feedback mechanism, and to propose a test protocol that uses an Universal Testing Machine (UTM). Results of the implementation of the test protocol on an infant CPR training manikin with hysteretic thoracic response and real-time feedback mechanism are also presented. Thoracic force-displacement response is evaluated by calculating the root-mean square error (RMSE) between experimentally obtained and theoretically desired curves. Using the proposed test protocol, the infant CPR training manikin was quantitatively evaluated. Indeed, for the evaluated manikin, the compression, decompression and final score are found to be ±17 N, ±83 N and ±50 N respectively, implying that the compression phase was close to the desired curve while the decompression phase was not.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123016858","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

Removal of signal artifacts from biomimetic vision sensor based on the common housefly 基于普通家蝇的仿生视觉传感器信号伪影去除

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-07 DOI: 10.1109/MeMeA.2017.7985849

Sakshi Agrawal, Brian K. Dean, W. Grimm, Kristi Carpenter, Michael Motzny

{"title":"Removal of signal artifacts from biomimetic vision sensor based on the common housefly","authors":"Sakshi Agrawal, Brian K. Dean, W. Grimm, Kristi Carpenter, Michael Motzny","doi":"10.1109/MeMeA.2017.7985849","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985849","url":null,"abstract":"The compound vision system of a common house fly, Musca domestica, is capable of heightened motion detection and tracking capabilities as compared to the camera-eye visual system of mammals. While mimicking the mammalian system makes sense when a human is responsible for viewing and interpreting the image, but in applications requiring obstacle avoidance and quick visual data processing, a fly vision sensor would be far more advantageous. Recent proof-of-concept, fully compound vision sensors have shown that it is possible to mimic the motion hyperacuity characteristic of the fly's visual system while also providing near instantaneous edge detection and motion tracking results; all without the need of a computer processing system. However, since it is currently not feasible to mimic the entire 3000 lens eye of the fly, biomimetic compound sensors must be designed to handle signal artifacts generated by the bioinspired light adaptation system. Previous efforts to handle these artifacts utilized a simple low pass filter architecture that mimics the delay in light adaptation seen in both the fly and humans. However, due to circuit design limitations, the low pass filter solution was only effective when imaging targets move at moderate to high speeds. A more effective sample-and-hold approach is presented in this paper. The approach allows easy customization of the light adaptation delay based on the slowest expected target speed in the application.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131473035","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

Calibration of therapeutic ultrasonic transducers with the modified radiation force balance system 用改进的辐射力平衡系统校准治疗超声换能器

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-07 DOI: 10.1109/MeMeA.2017.7985854

B. Karaboce, H. Durmuş, Emel Çetin, Mithat Ozdingis

{"title":"Calibration of therapeutic ultrasonic transducers with the modified radiation force balance system","authors":"B. Karaboce, H. Durmuş, Emel Çetin, Mithat Ozdingis","doi":"10.1109/MeMeA.2017.7985854","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985854","url":null,"abstract":"A modified radiation force balance (RFB) system was established for physiotherapy and high intensity therapeutic ultrasound (HITU) power measurements in the Medical Metrology Laboratory at the National Metrology Institute of Turkey (UME). The system was found to be highly stable up to a power level of 500 Watts. The measuring system consists of a Plexiglas cylindrical balancer, target mounted scale disks, conical reflector and absorbent targets, adjustable nuts and a hanging monofilament line‥ The balance is entirely symmetric with identical sizes and weight targets on both sides of the equilibrium point. The balance of the balance arm can be adjusted with adjustment screws on each side. The transducer was mounted beneath the water reservoir. Absorbing liners were used in the bottom and the near walls of the tank for reflecting target case. Ultrasound force is applied to a scale of equilibrium to which the reflector/absorber target is mounted, and the corresponding force is measured on the other scale of the equilibrium to which the equilibrium is connected by a thin wire while standing on a thin resting support. Ultrasound power of a HITU transducer at frequencies of 1.1 MHz was measured with conventional and new system. The measurement results were compared and uncertainty components were evaluated in this paper. A lower uncertainty value has been achieved in ultrasound power measurements for physiotherapy and HITU.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126009254","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

ImageQuant: An image-based quantitative Immunoassay Analyzer ImageQuant:基于图像的定量免疫分析分析仪

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-07 DOI: 10.1109/MeMeA.2017.7985913

M. Shah, J. Joseph, A. Rajagopalan, M. Sivaprakasam

{"title":"ImageQuant: An image-based quantitative Immunoassay Analyzer","authors":"M. Shah, J. Joseph, A. Rajagopalan, M. Sivaprakasam","doi":"10.1109/MeMeA.2017.7985913","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985913","url":null,"abstract":"Lateral flow immunoassay (LFIA) is popularly employed in point-of-care (PoC) diagnostics for quantitative estimation of a particular analyte present in a sample. Here, we present a compact, affordable and easy-to-use quantitative LFIA reader: ImageQuant Analyzer. This is an image-based analyzer for LFIA test kits. It gives a quantitative estimate of the target analyte — a good improvement over existing semi-quantitative or qualitative image-based LFIA readers. The instrument's hardware architecture and software are described in this paper. The Coefficient of Variation (CoV) for repeatability and reproducibility of the measurements was verified with four stable fluorescence cartridges. The CoV for repeatability test across all four reference cartridges was found to be less than 1 %. The variation observed for the reference cartridges across two instruments was also found to be good — 2.3 % for reproducibility test. The instrument was tested with human blood and serum samples on two distinct LFIA tests; Glycated Hemoglobin (HbA1c) and Vitamin D. The tests using blood/serum samples with both LFIA kits demonstrated excellent correlation. The correlation between the value measured by standard lab reference instrument and ImageQuant ratio-metric calculated output was 0.97 and 0.95 for HbA1C and Vitamin D tests respectively. The ImageQuant Analyzer can be a good substitute over traditional bulky, expensive LFIA Analyzers overcoming the many challenges posed by the latter in POC applications.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129200316","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: 6

Modeling the electric degradation of podocytes and detection of albumin for the early diagnostics of the glomerulus's damage 足细胞电降解模型及白蛋白检测在肾小球损伤早期诊断中的应用

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-07 DOI: 10.1109/MeMeA.2017.7985907

H. Nieto-Chaupis

{"title":"Modeling the electric degradation of podocytes and detection of albumin for the early diagnostics of the glomerulus's damage","authors":"H. Nieto-Chaupis","doi":"10.1109/MeMeA.2017.7985907","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985907","url":null,"abstract":"In this paper, the pass of proteins like the albumin through the glomerular layers is modeled. Mainly, we have focused on the mathematical model based on physics which might explain the filtering of giant proteins like the albumin to the convoluted tubule as a relevant indicator of the beginning of the diabetes kidney disease (DKD). The main assumption of this study is that of the presence of high concentrations of glucose might deplete the negative charges (superficial densities) located along the endothelium and podocytes. This has implications on the podocytes's architecture in the sense that the lack of charges is synonymous of degradation and loss of functionalities. When podocytes have lost their morphology, the albumin and others negatively charged proteins exert electrical forces on the slit diaphragm and therefore makes a dynamical displacement in the Bowman's space or urine formation space. We have simulated the possible spatial configurations of albumin and noise expected to be measured by the nanosensor. The results are interpreted as the possible beginning of the glomerular damage in type-2 diabetes patients. The Monte Carlo simulation yields that the signal can be measured with an efficiency of order of 70%.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134395632","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: 9

Measurement of shear wave velocity for elastography using conventional B-mode scan of focused ultrasound 用常规聚焦超声b型扫描测量弹性成像中的横波速度

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-01 DOI: 10.1109/MeMeA.2017.7985862

Zhen Qu, Y. Ono

{"title":"Measurement of shear wave velocity for elastography using conventional B-mode scan of focused ultrasound","authors":"Zhen Qu, Y. Ono","doi":"10.1109/MeMeA.2017.7985862","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985862","url":null,"abstract":"A measurement method of shear wave (SW) velocity for elastography by using a conventional B-mode scan with a focused ultrasound system is demonstrated in this paper. In the B-mode scan, there is a scanning time delay among the sequential A-mode measurements. This scanning time delay causes an artificial spatial frequency difference between the induced SW and undesired SWs reflected at tissue boundaries. Therefore, the reflected SW can be removed from the measured SWs using a spatial frequency filter. In our previous study, the SW propagating in the same direction as the B-mode scanning direction was used to measure the SW velocity. In such configuration, a prior knowledge was required whether the values of the SW velocity of a specimen are greater or smaller than the B-mode scanning speed, which may not be known for an arbitrary specimen. In order to address such shortcoming, the measurement configuration was modified in this paper so that such prior knowledge is no longer required. The method was verified by using a soft tissue mimicking phantom with a relatively stiffer cylindrical inclusion. Image contrast between the two different materials was successfully observed in the SW velocity map obtained.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125893771","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

Spectrally efficient telemedicine and in-hospital patient data transfer 频谱高效远程医疗和院内患者数据传输

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-01 DOI: 10.1109/MeMeA.2017.7985866

B. Bozorgchami, Shabnam Sodagari

引用次数: 5

An image-free ultrasound method to estimate artery wall thickness surrogate for screening 无图像超声方法估计动脉壁厚替代筛选

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-01 DOI: 10.1109/MeMeA.2017.7985897

V. RajKiran, J. Joseph, M. Shah, M. Sivaprakasam

{"title":"An image-free ultrasound method to estimate artery wall thickness surrogate for screening","authors":"V. RajKiran, J. Joseph, M. Shah, M. Sivaprakasam","doi":"10.1109/MeMeA.2017.7985897","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985897","url":null,"abstract":"Carotid Intima Media Thickness (CIMT) is an established marker of cardiovascular risk with proven utility in early detection. However, conventional B-mode ultrasound imaging based measurement of CIMT is not amenable for deployment in large scale screening due to cost and expertise required to perform the test. We had developed and validated an image -free ultrasound technique for non-invasive, automated evaluation of arterial wall dynamics, called ARTSENS®, for use in vascular screening. Here we present a novel technique to evaluate a carotid artery wall thickness surrogate (CWTS) measure using ARTSENS®, utilizing a single-element 5 MHz ultrasound transducer. The method is based on real time analysis of ultrasound echoes obtained from the far-wall of the common carotid artery. Intelligent algorithms for automated identification of arterial walls, tracking of wall motion, and extraction of far wall structural echoes and measurement of a wall-thickness estimate were developed, and integrated into a prototype ARTSENS® device to enable real time measurement of wall thickness in-vivo. The performance of the system was evaluated using dynamic arterial flow phantoms and in-vivo studies on a set of 7 volunteers. The system could track changes in wall-thickness over a cardiac cycle in both phantoms as well as volunteers in real time. Accuracy of measurements was evaluated in comparison with a reference B-mode ultrasound imaging system. The CWTS measurements showed strong agreement with CIMT values measured with observed error 2.18% and 6.19% in phantom studies and in-vivo measurements respectively. CWTS measurements were also strongly related to CIMT measurements with a R2 value 0.86. While the CWTS is not a replacement for CIMT, but the results validate that it can be potentially used for mass screening purpose, since the measuring system is very cost-effective, easily portable, includes low signal processing overhead and can be used by any general practitioner with just minimal training.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125411553","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: 4

Movement detection with adaptive window length for unobtrusive bed-based pressure-sensor array 运动检测与自适应窗口长度为不显眼的床为基础的压力传感器阵列

2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Pub Date : 2017-05-01 DOI: 10.1109/MEMEA.2017.7985902

S. S. Gilakjani, Stephanie L. Bennett, R. Goubran, H. Azimi, M. Bouchard, F. Knoefel

{"title":"Movement detection with adaptive window length for unobtrusive bed-based pressure-sensor array","authors":"S. S. Gilakjani, Stephanie L. Bennett, R. Goubran, H. Azimi, M. Bouchard, F. Knoefel","doi":"10.1109/MEMEA.2017.7985902","DOIUrl":"https://doi.org/10.1109/MEMEA.2017.7985902","url":null,"abstract":"Use of automated and unobtrusive sensors for physiological monitoring has become popular nowadays, since no devices need to be worn by individuals and it does not require any user interaction. However, when bodily movements occur, movement artifacts are introduced which can interfere with the breathing signal. This paper proposes a method to automatically identify movement onset and offset times when using an unobtrusive bed-based pressure-sensor array. This work makes use of a previously developed method for movement detection based on control levels. The novel contribution of this paper is employing an adaptive window length to calculate a moving average and a moving variance, by measuring the distance between two consecutive peaks in the signal which relates to consecutive movements. We also impose a threshold based on the weight and height of an individual to flag true movements and discard false ones. The proposed method is applicable for different postures and breath patterns of the bed occupant. Our experimental results show that the proposed scheme can lead to an average movement detection offset as low as 1.32 second, with no false-positive events and low false-negatives, and it provides significant improvements compared to a previous method.","PeriodicalId":235051,"journal":{"name":"2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114446189","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: 4