Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478717
V. Sandulescu, S. Puscoci, Monica Petre, Minodora Dumitrache, Viorel Bota, Alexandru Gîrlea
The paper presents an application of mHealth – a mobile app for remote health monitoring, that facilitates using a Bluetooth enabled health measuring device and synchronizing health data to a health care services provider’s web portal. The mobile app uses a public API that allows its integration in a complex platform for home care providers, allowing health monitoring of large groups of patients, monitoring vital functions, including body temperature, respiratory rate and arterial blood oxygen saturation, relevant in monitoring COVID-19 patients.
{"title":"mHealth application for remote health monitoring useful during the COVID 19 pandemic","authors":"V. Sandulescu, S. Puscoci, Monica Petre, Minodora Dumitrache, Viorel Bota, Alexandru Gîrlea","doi":"10.1109/MeMeA52024.2021.9478717","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478717","url":null,"abstract":"The paper presents an application of mHealth – a mobile app for remote health monitoring, that facilitates using a Bluetooth enabled health measuring device and synchronizing health data to a health care services provider’s web portal. The mobile app uses a public API that allows its integration in a complex platform for home care providers, allowing health monitoring of large groups of patients, monitoring vital functions, including body temperature, respiratory rate and arterial blood oxygen saturation, relevant in monitoring COVID-19 patients.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115564221","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478707
M. Romanato, A. Strazza, W. Piatkowska, F. Spolaor, S. Fioretti, D. Volpe, Z. Sawacha, F. Nardo
Surface electromyography (sEMG) is commonly adopted to characterize walking in patients affected by Parkinson’s disease (PD). Timing and morphology of sEMG signal are typically investigated, while poor information on frequency content is available. Thus, the present pilot study was designed to test the hypothesis that continuous wavelet transform (CWT) of sEMG signal is a suitable approach to assess muscle activity during PD-walking task, in both time and frequency domains. To this aim, sEMG signals from 4 leg muscles of 5 patients are acquired during walking and processed to assess CWT-scalogram function. Results show that CWT is able to provide time ranges of muscle-activation over the whole PD population, which matches with what reported in previous studies on PD. The novel contribution of this study consists in achieving a characterization of the frequency content of each one of regions detected in time domain. Although the frequency content does not exceed the typical frequency range between 5 Hz and 450 Hz, different mean frequency contents are observed among muscles and among different activations of the same muscle. In particular, a relevant variability of frequency content is observed for thigh muscles, showing differences up to 180 Hz between stance and swing values. In conclusion, present findings support the use of CWT scalogram for a reliable assessment of muscle activity in time-frequency domain, during walking of PD patients. Outcomes highlight a large inter and intra muscle variability of frequency range, opening a new field of investigation for future studies.
{"title":"Characterization of EMG time-frequency content during Parkinson walking: a pilot study","authors":"M. Romanato, A. Strazza, W. Piatkowska, F. Spolaor, S. Fioretti, D. Volpe, Z. Sawacha, F. Nardo","doi":"10.1109/MeMeA52024.2021.9478707","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478707","url":null,"abstract":"Surface electromyography (sEMG) is commonly adopted to characterize walking in patients affected by Parkinson’s disease (PD). Timing and morphology of sEMG signal are typically investigated, while poor information on frequency content is available. Thus, the present pilot study was designed to test the hypothesis that continuous wavelet transform (CWT) of sEMG signal is a suitable approach to assess muscle activity during PD-walking task, in both time and frequency domains. To this aim, sEMG signals from 4 leg muscles of 5 patients are acquired during walking and processed to assess CWT-scalogram function. Results show that CWT is able to provide time ranges of muscle-activation over the whole PD population, which matches with what reported in previous studies on PD. The novel contribution of this study consists in achieving a characterization of the frequency content of each one of regions detected in time domain. Although the frequency content does not exceed the typical frequency range between 5 Hz and 450 Hz, different mean frequency contents are observed among muscles and among different activations of the same muscle. In particular, a relevant variability of frequency content is observed for thigh muscles, showing differences up to 180 Hz between stance and swing values. In conclusion, present findings support the use of CWT scalogram for a reliable assessment of muscle activity in time-frequency domain, during walking of PD patients. Outcomes highlight a large inter and intra muscle variability of frequency range, opening a new field of investigation for future studies.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115378309","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478604
Rachele Rossanigo, M. Caruso, F. Salis, S. Bertuletti, U. Croce, A. Cereatti
Stride length is often used to quantitatively evaluate human locomotion performance. Stride by stride estimation can be conveniently obtained from the signals recorded using miniaturized inertial sensors attached to the feet and appropriate algorithms for data fusion and integration. To reduce the detrimental drift effect, different algorithmic solutions can be implemented. However, the overall method accuracy is supposed to depend on the optimal selection of the parameters which are required to be set. This study aimed at evaluating the influence of the main parameters involved in well-established methods for stride length estimation. An optimization process was conducted to improve methods’ performance and preferable values for the considered parameters according to different walking speed ranges are suggested. A parametric solution is also proposed to target the methods on specific subjects’ gait characteristics. The stride length estimates were obtained from straight walking trials of five healthy volunteers and were compared with those obtained from a stereo-photogrammetric system. After parameters tuning, percentage errors for stride length were 1.9%, 2.5% and 2.6% for comfortable, slow, and fast walking conditions, respectively.
{"title":"An Optimal Procedure for Stride Length Estimation Using Foot-Mounted Magneto-Inertial Measurement Units","authors":"Rachele Rossanigo, M. Caruso, F. Salis, S. Bertuletti, U. Croce, A. Cereatti","doi":"10.1109/MeMeA52024.2021.9478604","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478604","url":null,"abstract":"Stride length is often used to quantitatively evaluate human locomotion performance. Stride by stride estimation can be conveniently obtained from the signals recorded using miniaturized inertial sensors attached to the feet and appropriate algorithms for data fusion and integration. To reduce the detrimental drift effect, different algorithmic solutions can be implemented. However, the overall method accuracy is supposed to depend on the optimal selection of the parameters which are required to be set. This study aimed at evaluating the influence of the main parameters involved in well-established methods for stride length estimation. An optimization process was conducted to improve methods’ performance and preferable values for the considered parameters according to different walking speed ranges are suggested. A parametric solution is also proposed to target the methods on specific subjects’ gait characteristics. The stride length estimates were obtained from straight walking trials of five healthy volunteers and were compared with those obtained from a stereo-photogrammetric system. After parameters tuning, percentage errors for stride length were 1.9%, 2.5% and 2.6% for comfortable, slow, and fast walking conditions, respectively.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115175751","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}
Pub Date : 2021-06-23DOI: 10.1109/memea52024.2021.9478759
{"title":"[MeMeA 2021 Front cover]","authors":"","doi":"10.1109/memea52024.2021.9478759","DOIUrl":"https://doi.org/10.1109/memea52024.2021.9478759","url":null,"abstract":"","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122409790","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478704
N. S. Bonfiglio, Roberta Renati, Ludovica Patrone, D. Rollo, M. P. Penna
Impulsiveness and inhibitory control deficits represent one of the major difficulties in Attention Deficit disorders. It has been seen that these difficulties seem to be related to specific areas of the nervous system, such as the Prefrontal Area and the Inferior Frontal Gyrus. Several studies have shown how it is possible to improve inhibitory control and reduce impulsivity through the use of neurostimulation, in particular by single-session or multi-session protocols. Some of these researches have combined neurostimulation with tDCS with cognitive training, such as card or memory games, to improve the performance of some executive functions related to the frontal and prefrontal areas. The present work presents a treatment carried out on a 21-year-old subject with Attentive Disorder. The treatment consisted of the use of tDCS associated with cognitive training for 12 sessions. Cognitive batteries before starting the treatment and at the end of the treatment, as well as the trials on executive functions before each training session and at the end of the session, were administered. The results show an improvement in cognitive battery assessments before and after treatment. As regards the evaluations of executive function trials carried out for each session, however, the improvements are partial and related to some sessions. The results obtained in this work prove how the use of training, associated with neurostimulation, can represent an effective treatment for individuals with Attention Deficit. The possibility of using the protocol here proposed even remotely and without the assistance of an in presence operator, increases its potential and usefulness in care settings.
{"title":"The use of cognitive training with tDCS for the reduction of impulsiveness and improvement of executive functions: a case study","authors":"N. S. Bonfiglio, Roberta Renati, Ludovica Patrone, D. Rollo, M. P. Penna","doi":"10.1109/MeMeA52024.2021.9478704","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478704","url":null,"abstract":"Impulsiveness and inhibitory control deficits represent one of the major difficulties in Attention Deficit disorders. It has been seen that these difficulties seem to be related to specific areas of the nervous system, such as the Prefrontal Area and the Inferior Frontal Gyrus. Several studies have shown how it is possible to improve inhibitory control and reduce impulsivity through the use of neurostimulation, in particular by single-session or multi-session protocols. Some of these researches have combined neurostimulation with tDCS with cognitive training, such as card or memory games, to improve the performance of some executive functions related to the frontal and prefrontal areas. The present work presents a treatment carried out on a 21-year-old subject with Attentive Disorder. The treatment consisted of the use of tDCS associated with cognitive training for 12 sessions. Cognitive batteries before starting the treatment and at the end of the treatment, as well as the trials on executive functions before each training session and at the end of the session, were administered. The results show an improvement in cognitive battery assessments before and after treatment. As regards the evaluations of executive function trials carried out for each session, however, the improvements are partial and related to some sessions. The results obtained in this work prove how the use of training, associated with neurostimulation, can represent an effective treatment for individuals with Attention Deficit. The possibility of using the protocol here proposed even remotely and without the assistance of an in presence operator, increases its potential and usefulness in care settings.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116449968","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478722
Yihe Zhao, Libo Zhao, Gian Luca Barbruni, Zhikang Li, Zhuangde Jiang, S. Carrara
Capacitive micromachined ultrasonic transducers (CMUTs) operating at the series and parallel resonant frequencies, have shown a great potential in ultrasonic application and in biodetection. However, previous equivalent circuits rarely consider the fitting performance and measurement. This study proposes the establishment of the simplified equivalent circuits for the CMUTs-based device to analyze the electrical properties and the measurement sensitivity in liquid environment. We simulate a circular CMUT cell both in air and water through finite element method via COMSOL software, exploiting the multi-domain coupling method. We analyze the impedance behaviors of the CMUTs array with 100 cells under different direct current bias voltages (2 - 10V). Simultaneously, we successfully investigate the damping effects on the electrical characteristics such as impedance, phase, and quality factor. With the 4-element Butterworth-vanDyke model, two simplified equivalent lumped element models (LEMs) are demonstrated to fit the impedance curves of the CMUTs array around the series and parallel frequencies, respectively. Additionally, the sensitivity is evaluated using the simplified equivalent LEMs to explore the CMUTs array has a high normalized measurement sensitivity of 6.024 ppb/Hz at the parallel frequency.
{"title":"Equivalent Circuit Analysis of CMUTs-based Device for Measurement in Liquid Samples","authors":"Yihe Zhao, Libo Zhao, Gian Luca Barbruni, Zhikang Li, Zhuangde Jiang, S. Carrara","doi":"10.1109/MeMeA52024.2021.9478722","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478722","url":null,"abstract":"Capacitive micromachined ultrasonic transducers (CMUTs) operating at the series and parallel resonant frequencies, have shown a great potential in ultrasonic application and in biodetection. However, previous equivalent circuits rarely consider the fitting performance and measurement. This study proposes the establishment of the simplified equivalent circuits for the CMUTs-based device to analyze the electrical properties and the measurement sensitivity in liquid environment. We simulate a circular CMUT cell both in air and water through finite element method via COMSOL software, exploiting the multi-domain coupling method. We analyze the impedance behaviors of the CMUTs array with 100 cells under different direct current bias voltages (2 - 10V). Simultaneously, we successfully investigate the damping effects on the electrical characteristics such as impedance, phase, and quality factor. With the 4-element Butterworth-vanDyke model, two simplified equivalent lumped element models (LEMs) are demonstrated to fit the impedance curves of the CMUTs array around the series and parallel frequencies, respectively. Additionally, the sensitivity is evaluated using the simplified equivalent LEMs to explore the CMUTs array has a high normalized measurement sensitivity of 6.024 ppb/Hz at the parallel frequency.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116769784","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478685
Neslisah Gün, B. Karaböce, S. Yurdalan
Physiotherapy ultrasound is one of the most used electrophysical agents in the clinic for its widely therapeutic effects. To guarantee safe and effective treatment, physiotherapy devices must be capable of applying correct ultrasound radiation to the body (or part of the body) under the procedure. The effectiveness of the therapy depends on the ultrasound device's performance and calibration. For performance testing and calibration, tissue-mimicking phantoms are used. This study's objective is to characterize the acoustic parameters of muscle phantom used in the calibration of physiotherapy ultrasound, by following per under the metrology principles. Muscle phantom was prepared. Then, the phantom's sound speed, attenuation coefficient was measured with the pulse-echo method, density, and acoustic impedance calculations were performed. A detailed uncertainty study in measurements was also presented in the paper. The acoustic parameters of muscle phantom were measured as given; the speed of sound 1549.8 ± 3.89 m/s (expanded uncertainty, U=6.7), attenuation coefficient 1.14 ± 0.8 dB/cm MHz (expanded uncertainty, U=0.55). Its acoustic impedance was calculated as 1.632 MRayl; it's density as 1053.5 kg/ m³. Muscle phantom's acoustic properties were found similar to the muscle tissue. It can be used in testing the physiotherapy ultrasound device's performance and calibration as it is cheap, easy to make, and
{"title":"Characterization of Muscle Phantom Used in Calibration of Physiotherapy Ultrasound: Measurement of Acoustic Parameters of Phantom (2020)","authors":"Neslisah Gün, B. Karaböce, S. Yurdalan","doi":"10.1109/MeMeA52024.2021.9478685","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478685","url":null,"abstract":"Physiotherapy ultrasound is one of the most used electrophysical agents in the clinic for its widely therapeutic effects. To guarantee safe and effective treatment, physiotherapy devices must be capable of applying correct ultrasound radiation to the body (or part of the body) under the procedure. The effectiveness of the therapy depends on the ultrasound device's performance and calibration. For performance testing and calibration, tissue-mimicking phantoms are used. This study's objective is to characterize the acoustic parameters of muscle phantom used in the calibration of physiotherapy ultrasound, by following per under the metrology principles. Muscle phantom was prepared. Then, the phantom's sound speed, attenuation coefficient was measured with the pulse-echo method, density, and acoustic impedance calculations were performed. A detailed uncertainty study in measurements was also presented in the paper. The acoustic parameters of muscle phantom were measured as given; the speed of sound 1549.8 ± 3.89 m/s (expanded uncertainty, U=6.7), attenuation coefficient 1.14 ± 0.8 dB/cm MHz (expanded uncertainty, U=0.55). Its acoustic impedance was calculated as 1.632 MRayl; it's density as 1053.5 kg/ m³. Muscle phantom's acoustic properties were found similar to the muscle tissue. It can be used in testing the physiotherapy ultrasound device's performance and calibration as it is cheap, easy to make, and","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122681118","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478601
Hanen Nouri, D. Bouchaala, R. Gargouri, O. Kanoun
Howland current source is a promising circuit for bioimpedance measurement systems used in many medical applications. Although its simplicity and performance, it requires stability analysis due to its dependence on operational amplifier characteristics and resistor configuration. The trade-off between high output impedance and low output current, oscillations at high frequencies up to 1 MHz remains a challenge to ensure a stable Howland current source. Several cases studies of compensation capacitors in different positions in the circuit are analysed in order to guarantee at the same time a high output impedance and low output current oscillations at low and high frequencies.
{"title":"Stability Analysis for Howland Current Source for Bioimpedance Measurement","authors":"Hanen Nouri, D. Bouchaala, R. Gargouri, O. Kanoun","doi":"10.1109/MeMeA52024.2021.9478601","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478601","url":null,"abstract":"Howland current source is a promising circuit for bioimpedance measurement systems used in many medical applications. Although its simplicity and performance, it requires stability analysis due to its dependence on operational amplifier characteristics and resistor configuration. The trade-off between high output impedance and low output current, oscillations at high frequencies up to 1 MHz remains a challenge to ensure a stable Howland current source. Several cases studies of compensation capacitors in different positions in the circuit are analysed in order to guarantee at the same time a high output impedance and low output current oscillations at low and high frequencies.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126872024","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478595
D. Goubran, S. Lichtenstein, R. Goubran, J. Larivière-Chartier, J. Abel
A better understanding of the effects of variable inflow velocities on coronary capillary resistance is essential to creating a predictive model for personalized coronary flow. This paper proposes an experimental setup and presents measurement results for coronary artery capillary resistance with variable inflow conditions. A peristaltic pump with a programmable controller is used to pump fluid into distal coronary artery branches of cadaveric porcine hearts. The resulting pressures are recorded using transduced continuous pressure monitoring. The paper analyses the transient resistive pressure in coronary arteries and shows the capillary resistive pressures as a function of variable inflow conditions.
{"title":"Measuring Coronary Artery Capillary Resistance with Variable Inflow Conditions","authors":"D. Goubran, S. Lichtenstein, R. Goubran, J. Larivière-Chartier, J. Abel","doi":"10.1109/MeMeA52024.2021.9478595","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478595","url":null,"abstract":"A better understanding of the effects of variable inflow velocities on coronary capillary resistance is essential to creating a predictive model for personalized coronary flow. This paper proposes an experimental setup and presents measurement results for coronary artery capillary resistance with variable inflow conditions. A peristaltic pump with a programmable controller is used to pump fluid into distal coronary artery branches of cadaveric porcine hearts. The resulting pressures are recorded using transduced continuous pressure monitoring. The paper analyses the transient resistive pressure in coronary arteries and shows the capillary resistive pressures as a function of variable inflow conditions.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130278392","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}
Pub Date : 2021-06-23DOI: 10.1109/MeMeA52024.2021.9478594
E. Panero, E. Digo, Virginia Ferrarese, U. Dimanico, L. Gastaldi
The complex biomechanical structure of the human spine requires a deep investigation to properly describe its physiological function and its kinematic contribution during motion. The computational approach allows the segmentation of the human spine into several rigid bodies connected by 3D joints. Despite the numerous solutions proposed by previous literature studies based on both inertial and stereophotogrammetric systems, the modelling of the human spine is characterized by some limitations such as the lack of standardization. Accordingly, the present preliminary study focused on the development of a multi-segments kinematic model of the human spine and its validation during gait trials. Three-dimensional spinal angular patterns and ranges of motion of one healthy young subject were considered as outcomes of interest. They were obtained by applying the YXZ Euler angles convention to the custom model. First, results were compared with those of the standard Plug-in-Gait full-body model, which segments the human spine into pelvis and trunk segments. Then, outcomes of the multi-segments model were compared with those obtained using the Tilt-Twist method. Overall, results stressed the importance of the spine segmentation, the major angular contributions of spinal regions during gait (Medium-Lumbar segments for lateral bending and flexion-extension, Thoracic-Medium segments for axial rotation), and the reliability of the proposed custom model (differences between Euler angles method and Tilt-Twist method lower than 0.5° in most cases). Future analysis on a larger healthy population and in the clinical context might be implemented to optimize, standardize and validate the proposed human spine model.
{"title":"Multi-Segments Kinematic Model of the Human Spine during Gait","authors":"E. Panero, E. Digo, Virginia Ferrarese, U. Dimanico, L. Gastaldi","doi":"10.1109/MeMeA52024.2021.9478594","DOIUrl":"https://doi.org/10.1109/MeMeA52024.2021.9478594","url":null,"abstract":"The complex biomechanical structure of the human spine requires a deep investigation to properly describe its physiological function and its kinematic contribution during motion. The computational approach allows the segmentation of the human spine into several rigid bodies connected by 3D joints. Despite the numerous solutions proposed by previous literature studies based on both inertial and stereophotogrammetric systems, the modelling of the human spine is characterized by some limitations such as the lack of standardization. Accordingly, the present preliminary study focused on the development of a multi-segments kinematic model of the human spine and its validation during gait trials. Three-dimensional spinal angular patterns and ranges of motion of one healthy young subject were considered as outcomes of interest. They were obtained by applying the YXZ Euler angles convention to the custom model. First, results were compared with those of the standard Plug-in-Gait full-body model, which segments the human spine into pelvis and trunk segments. Then, outcomes of the multi-segments model were compared with those obtained using the Tilt-Twist method. Overall, results stressed the importance of the spine segmentation, the major angular contributions of spinal regions during gait (Medium-Lumbar segments for lateral bending and flexion-extension, Thoracic-Medium segments for axial rotation), and the reliability of the proposed custom model (differences between Euler angles method and Tilt-Twist method lower than 0.5° in most cases). Future analysis on a larger healthy population and in the clinical context might be implemented to optimize, standardize and validate the proposed human spine model.","PeriodicalId":429222,"journal":{"name":"2021 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133417946","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}
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