Pub Date : 2016-05-15DOI: 10.1109/MEMEA.2016.7533760
Vitoantonio Bevilacqua, G. Dimauro, F. Marino, Antonio Brunetti, Fabio Cassano, Antonio Di Maio, Enrico Nasca, Gianpaolo Francesco Trotta, Francesco Girardi, A. Ostuni, A. Guarini
Current medical practice for determining hemoglobin concentration (which is especially important for anemic patients in need of blood transfusion) involves frequent blood tests. In this work, we propose an alternative, non-invasive approach to hemoglobin estimation, based on image analysis of a specific conjunctival region. Our ultimate goal is to develop an easy-to-use wearable device that patients themselves can employ at home to autonomously assess their need of blood transfusion. In this paper, we detail the prototype of our device and the methodology for extracting key information from the color values of the acquired image. Tests conducted on 77 anemic and healthy patients show significant correlation between the real hemoglobin value obtained through blood sampling and the value estimated by our algorithm. A prototypical binary classification algorithm for assessing the need of blood transfusion yielded good results in terms of accuracy, specificity and sensitivity, thus making it possible to avoid a significant number of blood tests.
{"title":"A novel approach to evaluate blood parameters using computer vision techniques","authors":"Vitoantonio Bevilacqua, G. Dimauro, F. Marino, Antonio Brunetti, Fabio Cassano, Antonio Di Maio, Enrico Nasca, Gianpaolo Francesco Trotta, Francesco Girardi, A. Ostuni, A. Guarini","doi":"10.1109/MEMEA.2016.7533760","DOIUrl":"https://doi.org/10.1109/MEMEA.2016.7533760","url":null,"abstract":"Current medical practice for determining hemoglobin concentration (which is especially important for anemic patients in need of blood transfusion) involves frequent blood tests. In this work, we propose an alternative, non-invasive approach to hemoglobin estimation, based on image analysis of a specific conjunctival region. Our ultimate goal is to develop an easy-to-use wearable device that patients themselves can employ at home to autonomously assess their need of blood transfusion. In this paper, we detail the prototype of our device and the methodology for extracting key information from the color values of the acquired image. Tests conducted on 77 anemic and healthy patients show significant correlation between the real hemoglobin value obtained through blood sampling and the value estimated by our algorithm. A prototypical binary classification algorithm for assessing the need of blood transfusion yielded good results in terms of accuracy, specificity and sensitivity, thus making it possible to avoid a significant number of blood tests.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124769410","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533781
E. Pattini, D. Rollo
Literature on the subject hints that the skills of parents with children affected by autism are different from those of parents whose children with typical development or affected by other conditions. Among parental characteristics empathy and reciprocity in the child-parent relationship helps to bring to surface the child's social skills, learning adaptability and has a crucial influence on mental development along the entire lifespan. This research was aimed to investigate the differences about coping and empathy in mothers of children (3-11 years-old) divided in two groups: an “ASD group” consisting of mothers of children diagnosed with autism spectrum disorder and a “control group” including mothers of children with typical development.
{"title":"Response to stress in the parents of children with autism spectrum disorder","authors":"E. Pattini, D. Rollo","doi":"10.1109/MeMeA.2016.7533781","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533781","url":null,"abstract":"Literature on the subject hints that the skills of parents with children affected by autism are different from those of parents whose children with typical development or affected by other conditions. Among parental characteristics empathy and reciprocity in the child-parent relationship helps to bring to surface the child's social skills, learning adaptability and has a crucial influence on mental development along the entire lifespan. This research was aimed to investigate the differences about coping and empathy in mothers of children (3-11 years-old) divided in two groups: an “ASD group” consisting of mothers of children diagnosed with autism spectrum disorder and a “control group” including mothers of children with typical development.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128070178","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533759
M. Tarabini, B. Saggin, M. Bocciolone, D. Scaccabarozzi, Marianna Magni
Falls have always been a frequent and complex problem that might cause fatality, morbidity, loss or damage of body functions and undesired health care needs. The problem is relevant especially for senior citizens and different studies focused on systems for fall detections. This work analyzes the fall kinematics by means of accelerometers placed on head and torso of a crush test dummy used for fall simulations. This configuration reflects the situation in which the subject does not have any voluntary reaction to possible injuries, which is similar to what occurs during elder people fall. Accelerations were measured upon varying the dummy posture; data obtained from accelerometers were compared with those measured with a vision system. The comparison was based on both the peak velocity and on the fall duration. Results showed the compatibility between the data measured with the two methods, outlining the possibility of identifying the peak velocity from videos available on the internet captured, for instance by video surveillance cameras.
{"title":"Falls in older adults: Kinematic analyses with a crash test dummy","authors":"M. Tarabini, B. Saggin, M. Bocciolone, D. Scaccabarozzi, Marianna Magni","doi":"10.1109/MeMeA.2016.7533759","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533759","url":null,"abstract":"Falls have always been a frequent and complex problem that might cause fatality, morbidity, loss or damage of body functions and undesired health care needs. The problem is relevant especially for senior citizens and different studies focused on systems for fall detections. This work analyzes the fall kinematics by means of accelerometers placed on head and torso of a crush test dummy used for fall simulations. This configuration reflects the situation in which the subject does not have any voluntary reaction to possible injuries, which is similar to what occurs during elder people fall. Accelerations were measured upon varying the dummy posture; data obtained from accelerometers were compared with those measured with a vision system. The comparison was based on both the peak velocity and on the fall duration. Results showed the compatibility between the data measured with the two methods, outlining the possibility of identifying the peak velocity from videos available on the internet captured, for instance by video surveillance cameras.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130451433","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533708
L. Cattani, H. Saini, G. Ferrari, F. Pisani, R. Raheli
In this paper, we present Smartphone-based Contactless Epilepsy Detector (SmartCED): an Android monitoring application able to diagnose neonatal clonic seizures and warn about their possible occurrences in realtime. SmartCED has, however, wider applicability so that it could also be used on adult patients. The main goal is to implement a wire-free and low-cost epilepsy diagnostic system, executing all the necessary processing directly on the smartphone. Seizures' recognition is based on a well-known statistical criterion, namely Maximum Likelihood (ML). As clonic seizures are characterized by quasi-periodic movements of some body parts, it is possible to detect the presence of a seizure by evaluating this periodicity from the video stream of the smartphone's camera. The heavy computational processing is carried out in the native code (C language) to enhance the performance. SmartCED presents a user-friendly interface in order to extend its use even to unskilled staff. In fact, although it integrates complex software from the technical point of view, the user has just to: start the App, “frame the patient”, and start monitoring with a simple touch.
{"title":"SmartCED: An Android application for neonatal seizures detection","authors":"L. Cattani, H. Saini, G. Ferrari, F. Pisani, R. Raheli","doi":"10.1109/MeMeA.2016.7533708","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533708","url":null,"abstract":"In this paper, we present Smartphone-based Contactless Epilepsy Detector (SmartCED): an Android monitoring application able to diagnose neonatal clonic seizures and warn about their possible occurrences in realtime. SmartCED has, however, wider applicability so that it could also be used on adult patients. The main goal is to implement a wire-free and low-cost epilepsy diagnostic system, executing all the necessary processing directly on the smartphone. Seizures' recognition is based on a well-known statistical criterion, namely Maximum Likelihood (ML). As clonic seizures are characterized by quasi-periodic movements of some body parts, it is possible to detect the presence of a seizure by evaluating this periodicity from the video stream of the smartphone's camera. The heavy computational processing is carried out in the native code (C language) to enhance the performance. SmartCED presents a user-friendly interface in order to extend its use even to unskilled staff. In fact, although it integrates complex software from the technical point of view, the user has just to: start the App, “frame the patient”, and start monitoring with a simple touch.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121072801","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533816
Ramona De Luca, E. Rizzuto, Z. Prete
Elastography imaging is a promising technique to non-invasively assess the mechanical properties of biological tissues. Characterization of the non-linear elastic behavior of soft tissues represents a promising challenge in this field. The strain hardening effect of tissues with the increase of the applied load is already known, but up to today, few quantitative data of this effect exist in literature. This study aimed at revealing the elastic properties of ex-vivo mouse tissues and at characterizing their non-linear elastic behavior. This was done using a dedicated indentation experimental system that measured the length of each sample under a controlled force. Three mouse tissue specimens were studied: a Tibialis Anterior (TA) muscle, an Extensor Digitorum Longus (EDL) muscle and an adipose tissue sample. The investigation of the stress-strain curve reconstructed from experimental data revealed that TA, EDL and fat tissues showed a linear elasticity for strains up to 3.05%, 8.2% and 9.2% respectively. The non-linear region of the curve was found to be exponential, showing that TA muscle exhibited a strain hardening effect higher than EDL muscle and adipose tissue. The present study provided biomechanical models allowing to estimate the Young's modulus of the specimens as a function of the strains at a specific stress profile. Our preliminary results suggest the validity of these models in describing the non-linear stress-strain relationship of tissues. This allows a proper interpretation of elastograms obtained through large compression and/or pre-compression and helps in preventing misdiagnosis. Further investigations are needed to confirm this preliminary evidence.
{"title":"Characterizing the non-linear elastic properties of ex-vivo mouse tissues","authors":"Ramona De Luca, E. Rizzuto, Z. Prete","doi":"10.1109/MeMeA.2016.7533816","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533816","url":null,"abstract":"Elastography imaging is a promising technique to non-invasively assess the mechanical properties of biological tissues. Characterization of the non-linear elastic behavior of soft tissues represents a promising challenge in this field. The strain hardening effect of tissues with the increase of the applied load is already known, but up to today, few quantitative data of this effect exist in literature. This study aimed at revealing the elastic properties of ex-vivo mouse tissues and at characterizing their non-linear elastic behavior. This was done using a dedicated indentation experimental system that measured the length of each sample under a controlled force. Three mouse tissue specimens were studied: a Tibialis Anterior (TA) muscle, an Extensor Digitorum Longus (EDL) muscle and an adipose tissue sample. The investigation of the stress-strain curve reconstructed from experimental data revealed that TA, EDL and fat tissues showed a linear elasticity for strains up to 3.05%, 8.2% and 9.2% respectively. The non-linear region of the curve was found to be exponential, showing that TA muscle exhibited a strain hardening effect higher than EDL muscle and adipose tissue. The present study provided biomechanical models allowing to estimate the Young's modulus of the specimens as a function of the strains at a specific stress profile. Our preliminary results suggest the validity of these models in describing the non-linear stress-strain relationship of tissues. This allows a proper interpretation of elastograms obtained through large compression and/or pre-compression and helps in preventing misdiagnosis. Further investigations are needed to confirm this preliminary evidence.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122809735","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533782
D. Petretto, P. Piras, Ilenia Pistis, Elena Tradori, M. Camboni, Federica Staico, F. Palmas, Carla Lussu, A. Preti, C. Masala
Since the born of intelligence tests, there have been a debate about the praticai use of intelligence tests, also with a lots of critics about the nature and the data we can derive from them. Perhaps the study of intelligence tests could be divided in different historical steps, in newer steps intelligence test were used and analyzed according to more detailed psychometrical bases and aiming to define specific profiles and to design specific intervention according to thus specific profiles. In current step, the single general index IQ is maintained but there is also a deeper analysis of single indexes and macroindexes according to a theorical framework. Wechsler Intelligence Scales are one of the worldwide more utilized tests for the assessment of general reasoning abilities and cognitive profile in children. In the last 20 years the CHC Model from Cattell-Horn and Carrol is the worldwide more utilized theoretical model for the analysis of abilities related to intelligence and pattern derived from intelligence test, supported by a great number of datasets. The interpretation of WISC-IV scores, based on CHC (Carrol-Horn-Cattell) model of intelligence, permit to evaluate single cognitive functions and to assess general reasoning competence as well as to describe verbal reasoning, visual spatial reasoning, working memory and speed of processing. New diagnostic criteria for dyslexia and for specific learning disabilities on reading from DSM-5 no more considered discrepancy criteria (a discrepancy between IQ and scores on reading test), but the assessment of neuropsychological profile and cognitive profile by intelligence test and other neuropsychological tests of the child remains an important phase of clinical evaluation ((1), (2), (3)). Different studies analyzed performance on WISC test in children with reading disorders from different countries (for example in France and Portugal), using different versions of the instrument (Wisc-r, Wisc-III, Wisc-IV) ((4), (5), (6) (7)) and also according to different criteria of selection (see (8) for persistent academic difficulties). The question about a dyslexic profile on the test is still open, perhaps due to different methodological choices in the different researches and to the use of different versions of Wechsler Scale for Children test. Purpose of this article is to describe performance on Wisc-IV test in Italian children, based on CHC model and to make a deeper analysis of cognitive profile, on single test level, and on indexes level. 168 children in the study were consecutively referred to the authors due to persistent academic difficulties and we selected 90 who have persistent difficulties related to reading (specific o unspecific) (from January 2013 to may 2014). Data on cognitive profile on single test level, and on indexes level are discussed, based on CHC model. Clinical issues are proposed, also aiming to the creation on personalized intervention, also in school.
{"title":"Difficulties in reading and neuropsychological profile on WISC-IVin Italian children","authors":"D. Petretto, P. Piras, Ilenia Pistis, Elena Tradori, M. Camboni, Federica Staico, F. Palmas, Carla Lussu, A. Preti, C. Masala","doi":"10.1109/MeMeA.2016.7533782","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533782","url":null,"abstract":"Since the born of intelligence tests, there have been a debate about the praticai use of intelligence tests, also with a lots of critics about the nature and the data we can derive from them. Perhaps the study of intelligence tests could be divided in different historical steps, in newer steps intelligence test were used and analyzed according to more detailed psychometrical bases and aiming to define specific profiles and to design specific intervention according to thus specific profiles. In current step, the single general index IQ is maintained but there is also a deeper analysis of single indexes and macroindexes according to a theorical framework. Wechsler Intelligence Scales are one of the worldwide more utilized tests for the assessment of general reasoning abilities and cognitive profile in children. In the last 20 years the CHC Model from Cattell-Horn and Carrol is the worldwide more utilized theoretical model for the analysis of abilities related to intelligence and pattern derived from intelligence test, supported by a great number of datasets. The interpretation of WISC-IV scores, based on CHC (Carrol-Horn-Cattell) model of intelligence, permit to evaluate single cognitive functions and to assess general reasoning competence as well as to describe verbal reasoning, visual spatial reasoning, working memory and speed of processing. New diagnostic criteria for dyslexia and for specific learning disabilities on reading from DSM-5 no more considered discrepancy criteria (a discrepancy between IQ and scores on reading test), but the assessment of neuropsychological profile and cognitive profile by intelligence test and other neuropsychological tests of the child remains an important phase of clinical evaluation ((1), (2), (3)). Different studies analyzed performance on WISC test in children with reading disorders from different countries (for example in France and Portugal), using different versions of the instrument (Wisc-r, Wisc-III, Wisc-IV) ((4), (5), (6) (7)) and also according to different criteria of selection (see (8) for persistent academic difficulties). The question about a dyslexic profile on the test is still open, perhaps due to different methodological choices in the different researches and to the use of different versions of Wechsler Scale for Children test. Purpose of this article is to describe performance on Wisc-IV test in Italian children, based on CHC model and to make a deeper analysis of cognitive profile, on single test level, and on indexes level. 168 children in the study were consecutively referred to the authors due to persistent academic difficulties and we selected 90 who have persistent difficulties related to reading (specific o unspecific) (from January 2013 to may 2014). Data on cognitive profile on single test level, and on indexes level are discussed, based on CHC model. Clinical issues are proposed, also aiming to the creation on personalized intervention, also in school.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124156761","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533752
A. Lay-Ekuakille, G. Griffo, F. Conversano, S. Casciaro, A. Massaro, V. Bhateja, F. Spano
The proposed research illustrates an innovating implantable micro-apparatus to be encompassed under the scalp for monitoring and retrieving electrical cerebral activities. The illustrated system considers its theoretical realization including, design of circuital electronic components and energy harvesting, 3D package, chemical aspects concerning the utilization of UHMWPE (Ultra High Molecular Weight Polyethylene) polymeric materials for packaging including mechanical simulations and comparison with titanium material, and electromagnetic aspects regarding the Wi-Fi radiation. A full description of necessary circuitry is included. Moreover, for chemical viewpoint, requirements of polymeric nanomaterials, embedding silver or copper nanoparticles to be used for its fabrication, are discussed illustrating antibacterial and electromagnetic wall barrier properties. The study of the proposed work concerns the whole design of the system.
{"title":"EEG signal processing and acquisition for detecting abnormalities via bio-implantable devices","authors":"A. Lay-Ekuakille, G. Griffo, F. Conversano, S. Casciaro, A. Massaro, V. Bhateja, F. Spano","doi":"10.1109/MeMeA.2016.7533752","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533752","url":null,"abstract":"The proposed research illustrates an innovating implantable micro-apparatus to be encompassed under the scalp for monitoring and retrieving electrical cerebral activities. The illustrated system considers its theoretical realization including, design of circuital electronic components and energy harvesting, 3D package, chemical aspects concerning the utilization of UHMWPE (Ultra High Molecular Weight Polyethylene) polymeric materials for packaging including mechanical simulations and comparison with titanium material, and electromagnetic aspects regarding the Wi-Fi radiation. A full description of necessary circuitry is included. Moreover, for chemical viewpoint, requirements of polymeric nanomaterials, embedding silver or copper nanoparticles to be used for its fabrication, are discussed illustrating antibacterial and electromagnetic wall barrier properties. The study of the proposed work concerns the whole design of the system.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130773704","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533751
Huthaifa N. Abderahman, H. Dajani, M. Bolic, V. Groza
Accurate blood pressure (BP) measurement is critical in the diagnosis and management of hypertension, as an error of 5 mmHg can be responsible for doubling or halving the number of patients diagnosed with this condition. Sensor drift, due to changing environmental factors, such as ambient temperature, can contribute to the inaccuracy. Studies also show that long term sensor drift, or ageing, can lead to a change of almost 9 mmHg in blood pressure measurement during the first three months of usage. In this work, a new stage is added to current cuff-based BP devices. This stage is responsible for adjusting the pressure reading before displaying it to end users, by monitoring changes in the ambient temperature and sensor ageing and adaptively compensating for these inaccuracies. These sources of inaccuracy are suppressed using algorithms based on Empirical Mode Decomposition (EMD), which has the feature of removing unwanted noise components without affecting the phase or the frequency distribution of the measured signal.
{"title":"An integrated system to compensate for temperature drift and ageing in non-invasive blood pressure measurement","authors":"Huthaifa N. Abderahman, H. Dajani, M. Bolic, V. Groza","doi":"10.1109/MeMeA.2016.7533751","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533751","url":null,"abstract":"Accurate blood pressure (BP) measurement is critical in the diagnosis and management of hypertension, as an error of 5 mmHg can be responsible for doubling or halving the number of patients diagnosed with this condition. Sensor drift, due to changing environmental factors, such as ambient temperature, can contribute to the inaccuracy. Studies also show that long term sensor drift, or ageing, can lead to a change of almost 9 mmHg in blood pressure measurement during the first three months of usage. In this work, a new stage is added to current cuff-based BP devices. This stage is responsible for adjusting the pressure reading before displaying it to end users, by monitoring changes in the ambient temperature and sensor ageing and adaptively compensating for these inaccuracies. These sources of inaccuracy are suppressed using algorithms based on Empirical Mode Decomposition (EMD), which has the feature of removing unwanted noise components without affecting the phase or the frequency distribution of the measured signal.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131414526","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533802
I. Castro, R. Morariu, T. Torfs, C. Hoof, R. Puers
A robust wireless system for capacitive ECG is presented, which measures electrode-body capacitive impedance, acceleration, and gyroscope signals from the electrodes to be used in motion artifact reduction algorithms. The system dynamically adapts its robustness and signal quality according to the environmental conditions. Optimizations including bias resistance and cancellation of common mode signals are discussed, and an office chair implementation is presented. An example of motion artifact compensation by means of an adaptive filter that uses the recorded signals is shown; and the dynamic adaptation to prevent front-end saturation is demonstrated and validated.
{"title":"Robust wireless capacitive ECG system with adaptive signal quality and motion artifact reduction","authors":"I. Castro, R. Morariu, T. Torfs, C. Hoof, R. Puers","doi":"10.1109/MeMeA.2016.7533802","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533802","url":null,"abstract":"A robust wireless system for capacitive ECG is presented, which measures electrode-body capacitive impedance, acceleration, and gyroscope signals from the electrodes to be used in motion artifact reduction algorithms. The system dynamically adapts its robustness and signal quality according to the environmental conditions. Optimizations including bias resistance and cancellation of common mode signals are discussed, and an office chair implementation is presented. An example of motion artifact compensation by means of an adaptive filter that uses the recorded signals is shown; and the dynamic adaptation to prevent front-end saturation is demonstrated and validated.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126778217","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 : 2016-05-15DOI: 10.1109/MeMeA.2016.7533701
N. I. Khramtsova, S. Plaksin
Background: The aim of the study was to determine the diagnostic value of bioelectrical impedance analysis in estimating the components of human body in dynamics. Subjects/Methods: The objects of the research were 37 healthy women before and after water-jet liposuction. Bioelectrical impedance analysis (BIA) was provided with portable non-professional analyzer “Tanita BC-542”. Subcutaneous adipose tissue, body water, muscle and bone components, and basal metabolism degree were obtained. Results: The body weight significantly increased immediately after liposuction, and on the 7th day it returned to the initial, body weight growth was associated with massive infusion during surgery. The percentage of fat, obtained with BIA, slightly decreased immediately after liposuction and significantly decreased on the 7th day. There is a correlation of the change in body fat percentage with the amount of the removed adipose tissue immediately after surgery and on the 7th day after surgery. The volume of the removed fat correlated with fat changes revealed by BIA immediately after surgery and on the 7th day. Body water, obtained with BIA, increased non-significantly immediately after liposuction, and significantly on the 7th day. Changes in weight after liposuction correlated with the difference between infused and aspirated fluid. Conclusions: Two-electrode BIA is an informative, accurate, easy to perform and affordable method of determining body mass, body fat and water percentage. Fatty tissue percentage and body water measured by BIA correlates with the volumes of removed fat and infused water.
{"title":"Two-electrode bioelectrical impedance measurement in body composition analysis before and after liposuction","authors":"N. I. Khramtsova, S. Plaksin","doi":"10.1109/MeMeA.2016.7533701","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533701","url":null,"abstract":"Background: The aim of the study was to determine the diagnostic value of bioelectrical impedance analysis in estimating the components of human body in dynamics. Subjects/Methods: The objects of the research were 37 healthy women before and after water-jet liposuction. Bioelectrical impedance analysis (BIA) was provided with portable non-professional analyzer “Tanita BC-542”. Subcutaneous adipose tissue, body water, muscle and bone components, and basal metabolism degree were obtained. Results: The body weight significantly increased immediately after liposuction, and on the 7th day it returned to the initial, body weight growth was associated with massive infusion during surgery. The percentage of fat, obtained with BIA, slightly decreased immediately after liposuction and significantly decreased on the 7th day. There is a correlation of the change in body fat percentage with the amount of the removed adipose tissue immediately after surgery and on the 7th day after surgery. The volume of the removed fat correlated with fat changes revealed by BIA immediately after surgery and on the 7th day. Body water, obtained with BIA, increased non-significantly immediately after liposuction, and significantly on the 7th day. Changes in weight after liposuction correlated with the difference between infused and aspirated fluid. Conclusions: Two-electrode BIA is an informative, accurate, easy to perform and affordable method of determining body mass, body fat and water percentage. Fatty tissue percentage and body water measured by BIA correlates with the volumes of removed fat and infused water.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114158655","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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