{"title":"Finger Joint Characterization from X-Ray Images for Rheumatoid Arthritis Assessment","authors":"Joan M. Núñez, D. Gil, F. Vilariño","doi":"10.5220/0004327302880292","DOIUrl":"https://doi.org/10.5220/0004327302880292","url":null,"abstract":"In this study we propose a modular system for automatic rheumatoid arthritis assessment which provides a joint space width measure. A hand joint model is proposed based on the accurate analysis of a X-ray finger joint image sample set. This model shows that the sclerosis and the lower bone are the main necessary features in order to perform a proper finger joint characterization. We propose sclerosis and lower bone detection methods as well as the experimental setup necessary for its performance assessment. Our characterization is used to propose and compute a joint space width score which is shown to be related to the different degrees of arthritis. This assertion is verified by comparing our proposed score with Sharp Van der Heijde score, confirming that the lower our score is the more advanced is the patient affection.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128163848","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}
K. Davoudi, Moein Shayeganyan, K. Tavakolian, B. Kaminska
{"title":"Mechanically Flexiable Biosensor for Detection of Photoplethysography","authors":"K. Davoudi, Moein Shayeganyan, K. Tavakolian, B. Kaminska","doi":"10.5220/0004806401590164","DOIUrl":"https://doi.org/10.5220/0004806401590164","url":null,"abstract":"Acute cardiovascular failure could be detected by continuous monitoring of electrocardiogram (ECG). While electrode allocation on skin challenges quality of electrocardiograph, beat-to-beat heart rate obtained from photoplethysmography (PPG) could be used to indicate cardiovascular activity as an alternative to heart rate from ECG. In this paper we proposed a mechanically flexible PPG sensor integrated on thin layer of polymer. Mean and standard deviation of beat-to-beat heart rate was obtained from a flexible PPG sensor and compared to the beat-to-beat heart rate obtained from a commercial ECG and PPG devices. The standard deviation of beat-to-beat heart rate from ECG and PPG intervals were analysed by the Bland and Altman analysis. The corresponding 95% limits of agreement were estimated as 0.034 to -0.01 for PPG flexible sensor compared to ECG and as 0.0081 to 0.0037 for PPG flexible sensor compared to PPG commercial device. The good correlation between the measurement results demonstrated capability of our proposed mechanical flexible PPG sensor to be used as practical alternative to ECG for heart rate variability","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133994869","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}
J. F. Souza, M. Lima, I. Doi, P. J. Tatsch, J. A. Diniz, J. L. Gonçalves
{"title":"SiNx/SiO2 Stacked Sensitive Thin Film for ISFET-based Chemical and Biochemical Sensors - Preparation and Characterization of the Stacked Thin Films and Sensors","authors":"J. F. Souza, M. Lima, I. Doi, P. J. Tatsch, J. A. Diniz, J. L. Gonçalves","doi":"10.5220/0003721603020306","DOIUrl":"https://doi.org/10.5220/0003721603020306","url":null,"abstract":"In this work, nitrogen rich SiNx thin film was deposited on SiO2/p-Si (100) substrate by low pressure chemical vapour deposition (LPCVD). The film was physically characterized using techniques such as Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM) and ellipsometry. The biocompatibility of such film was investigated by FTIR. Using a set of metal insulator semiconductor field effect transistors (MISFETs) and ion sensitive field effect transistors (ISFETs) fabricated, electrical characteristics and sensing properties were investigated. The biocompatibility of the SiNx film and the electrical quality of the SiNx/SiO2/p-Si interface obtained suggests that SiNx/SiO2 is an adequate insulator on ISFET based chemical and biochemical sensors.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116015128","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}
B. Cagneau, D. Bellot, G. Morel, N. Zemiti, G. D'Agostino
{"title":"Augmented Comanipulation in Robotic Surgery","authors":"B. Cagneau, D. Bellot, G. Morel, N. Zemiti, G. D'Agostino","doi":"10.5220/0001053600470054","DOIUrl":"https://doi.org/10.5220/0001053600470054","url":null,"abstract":"This paper presents a control scheme for augmented comanipulation with force feedback in robotic surgery. This approach aims at increasing the surgeon’s dexterity. The surgeon manipulates a handle mounted on the robot which manipulates the instrument. The control law ensures that the instrument applies on the organ the same forces that the surgeon applies on the handle but decreased by a scale factor. As a consequence, the robotic device provides the surgeon with an augmented sensation of the interaction forces between the instrument and the organ. The proposed control law does not require any knowledge of the environment. This control scheme is proven stable thanks to a passivity study. Indeed, passivity analysis is a useful tool for the stability analysis of a robot interacting with an unknown environment. Experimental results are presented on a robot dedicated to minimally invasive surgery.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130256612","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}
{"title":"A Fully Integrated CMOS Sensor for Pico-current Measurement on Solid-state Nanopore Devices","authors":"Jungsuk Kim, K. Pedrotti, W. Dunbar","doi":"10.5220/0003732000270031","DOIUrl":"https://doi.org/10.5220/0003732000270031","url":null,"abstract":"In this paper, an integrated high-sensitivity patch-clamp sensor is proposed to measure the ultra-low current variation of a solid-state nanopore device. This sensor amplifier consists of three stages: 1) a headstage, 2) a difference amplifier and 3) a unity-gain buffer. For the headstage, a resistive-feedback transimpedance amplifier is employed to convert the small current to a readable voltage. The addition of a programmable gain to the second-stage difference amplifier allows the maximum gain to be increased to 168dBΩ. This sensor is fabricated in a 0.35μm CMOS process and is tested with an 80nm-diameter solid-state nanopore. We present a detailed circuit analysis for the low-noise patch-clamp design and its noise measurement result in this paper.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122634329","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}
{"title":"A Mechatronic Device for the Rehabilitation of Ankle Motion","authors":"G. Bucca, A. Bezzolato, S. Bruni, F. Molteni","doi":"10.5220/0001047500560063","DOIUrl":"https://doi.org/10.5220/0001047500560063","url":null,"abstract":"The paper presents the main results from a research aiming at the design of an electro-mechanical actuator to assist walking movements of the ankle articulation, for use in the rehabilitation of lower limb motion in patients suffering neurological disease. Motivations for the research project are discussed within the framework of the application of mechatronic concepts within rehabilitation practice. The entire design process is then described, from the definition of project target through the mechanical concept and control design steps until design validation by means of numerical simulations and tests on a prototype.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126093627","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}
{"title":"Test Bench for Analysis of Harmful Vibrations Induced to Wheelchair Users","authors":"A. Ababou, N. Ababou, T. Morsi, L. Boukhechem","doi":"10.5220/0004806001470153","DOIUrl":"https://doi.org/10.5220/0004806001470153","url":null,"abstract":"In this paper, a test bench for analysis of harmful vibrations that can be transmitted by manual wheelchair ti its user is presented. The vibration generating device developed in the laboratory and sensors positioning are described. Vibration measurements were carried out using four tri-axis MEMS accelerometers and a position sensor. Experimental data were noisy, so they were first filtered before acceleration amplitude can be assessed using two methods that we propose: a so-called ‘cyclogram method’ and ‘DFT principal peak signal magnitude’ on the other hand. The second one is faster and results showed that the prototype developed in the laboratory can provide harmful vibrations in 2-10Hz frequency range and can be used to check the vibration transmissibility of wheelchair.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121289425","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}
A. Dyszkiewicz, Pawel Polec, Jakub Zajdel, B. Pawlus, Damian Chachulski, Pawel Kepinski
{"title":"Collimation of X-ray Diagnostic Bundle by Means of Steering Ferrofluid","authors":"A. Dyszkiewicz, Pawel Polec, Jakub Zajdel, B. Pawlus, Damian Chachulski, Pawel Kepinski","doi":"10.5220/0001817704410447","DOIUrl":"https://doi.org/10.5220/0001817704410447","url":null,"abstract":"An extruded three-phase base pan for a load center has a central rail with a cross-sectional configuration in the form of a modified cross. The upper surface of each arm of the cross curves upward and away from the body of the cross. The bottom surface and top surface of each arm are joined by a U-shaped surface. The bottom of the base pan has ribs with integrally formed grooves.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134329184","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}
A. Lantada, P. Morgado, Julio Muñoz García, J. L. M. Sanz, J. E. Otero, J. M. Muñoz-Guijosa
{"title":"Intelligent Expandable Structures based on the Improved Activation of Shape-memory Polymers","authors":"A. Lantada, P. Morgado, Julio Muñoz García, J. L. M. Sanz, J. E. Otero, J. M. Muñoz-Guijosa","doi":"10.5220/0002766602400245","DOIUrl":"https://doi.org/10.5220/0002766602400245","url":null,"abstract":"Shape-memory polymers are active materials with thermomechanical coupling and a high capability to recover from high levels of deformation, which, combined with their low cost and density has favoured the appearance of numerous applications, particularly those linked to the Medical Industry. In many cases, these materials are of medical standard, which increases the chances of obtaining biocompatible devices. In the last decade enormous progress has been made on many areas, regarding these materials, such as synthesis, characterization, activation, prototyping and others, aimed at improving their applicability. However, various spheres of action require additional in depth research to promote the production start-up of various shape-memory polymer-based devices that have had laboratory validation. One of these areas of improvement is linked to the activation systems of SMPs. This work sets outs the possibility of obtaining a more homogeneous heating processes for an optimal activation of the “shape-memory effect”, which promotes the geometric changes of such devices. These improvements are based on the development of net-shaped SMP structures to which silver thread is knitted for subsequent activation through Joule heating. First prototypes and trials are explained in detail, as well as the possible biomedical applications of this concept.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114846182","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}
H. Pereira, J. Maldonado, T. Pereira, M. Contente, V. Almeida, T. Pereira, J. Simões, J. Cardoso, C. Correia
{"title":"A Novel and Low Cost Acoustic based Probe for Local Pulse Wave Velocity Estimation - Experimental Characterization and in-Vivo Feasibility","authors":"H. Pereira, J. Maldonado, T. Pereira, M. Contente, V. Almeida, T. Pereira, J. Simões, J. Cardoso, C. Correia","doi":"10.5220/0004251900780088","DOIUrl":"https://doi.org/10.5220/0004251900780088","url":null,"abstract":"The use of local pulse wave velocity (PWV) as an independent risk factor for cardiovascular events and as a marker of atherosclerosis has been gained clinical relevance over the years. A novel acoustic double headed probe for non-invasive measurement of the local PWV is presented in this paper. The PWV is assessed in one single location and involves the determination of time delay between the signals acquired simultaneously by two acoustic sensors, placed ≈11 mm apart. Several tests were performed in special purposes test bench systems in order to characterize the acoustic probe (AP) regarding the existence of crosstalk between the transducers, repeatability, waveform analysis and also its time resolution. Results demonstrate the effectiveness of the AP in acquiring repeatedly the same waveform, with the possibility to measure higher PWV (14 m/s), with a relative error less than 5%, when using two uncoupled APs. In-vivo acquisitions were also carried out with the AP in the carotid artery of 17 healthy volunteers with the intention of local PWV and other hemodynamic parameters estimation, such as left ventricular ejection time (LVET). For the total of subjects’ sample, the obtained mean carotid PWV was 2.96±1.08 m/s and the LVET mean value was 288.59±21.42 ms.","PeriodicalId":357085,"journal":{"name":"International Conference on Biomedical Electronics and Devices","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126329209","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}