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Tomasic, Ivan
Publications (10 of 21) Show all publications
Tomasic, I., Rashkovska, A., Trobec, R. & Lindén, M. (2019). The implications of the lead theory on the patch ECG devices positioning and measurement. In: IFMBE Proceedings: . Paper presented at World Congress on Medical Physics and Biomedical Engineering, WC 2018, 3 June 2018 through 8 June 2018 (pp. 693-696). Springer Verlag (1)
Open this publication in new window or tab >>The implications of the lead theory on the patch ECG devices positioning and measurement
2019 (English)In: IFMBE Proceedings, Springer Verlag , 2019, no 1, p. 693-696Conference paper, Published paper (Refereed)
Abstract [en]

Currently we are witnessing fast development of patch ECG devices, some of which have already been extensively evaluated and shown to be useful for detecting arrhythmias. The research about using the patch ECG devices for purposes other than arrhythmia detection has been scarce. The efficiency of patch electrocardiography for a specific purpose can depend on the devices location on the body surface. It is still an open question where to position the ECG patch devices, and should the position depend on the specific purpose and perhaps even be personalized. We present the lead theory of differential leads (ECG leads obtained by patch ECG devices) and discuss its implications on the patch ECG devices positioning on the body surface.

Place, publisher, year, edition, pages
Springer Verlag, 2019
Keywords
Bipolar lead, Differential lead, ECG, Electrocardiography, Lead theory, Patch monitors, Remote monitoring, Telemonitoring, Biomedical engineering, Arrhythmia detection, Body surface, ECG devices, Ecg patches, Tele-monitoring
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:mdh:diva-39976 (URN)10.1007/978-981-10-9035-6_128 (DOI)000450908300128 ()2-s2.0-85048259555 (Scopus ID)
Conference
World Congress on Medical Physics and Biomedical Engineering, WC 2018, 3 June 2018 through 8 June 2018
Available from: 2018-06-21 Created: 2018-06-21 Last updated: 2018-12-06Bibliographically approved
Gardasevic, G., Fotouhi, H., Tomasic, I., Vahabi, M., Björkman, M. & Lindén, M. (2018). A Heterogeneous IoT-based Architecture for Remote Monitoring of Physiological and Environmental Parameters. In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, Volume 225: . Paper presented at 4th EAI International Conference on IoT Technologies for HealthCare HealthyIOT'17, 24 Oct 2017, Angers, France (pp. 48-53).
Open this publication in new window or tab >>A Heterogeneous IoT-based Architecture for Remote Monitoring of Physiological and Environmental Parameters
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2018 (English)In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, Volume 225, 2018, p. 48-53Conference paper, Published paper (Refereed)
Abstract [en]

A heterogeneous Internet of Things (IoT) architecture for remote health monitoring (RHM) is proposed, that employs Bluetooth and IEEE 802.15.4 wireless connectivity. The RHM system encompasses Shimmer physiological sensors with Bluetooth radio, and OpenMote environmental sensors with IEEE 802.15.4 radio. This system architecture collects measurements in a relational database in a local server to implement a Fog node for fast data analysis as well as in a remote server in the Cloud. 

National Category
Medical Engineering
Identifiers
urn:nbn:se:mdh:diva-37078 (URN)10.1007/978-3-319-76213-5_7 (DOI)2-s2.0-85042550307 (Scopus ID)9783319762128 (ISBN)
Conference
4th EAI International Conference on IoT Technologies for HealthCare HealthyIOT'17, 24 Oct 2017, Angers, France
Projects
ESS-H - Embedded Sensor Systems for Health Research ProfileREADY - Research Environment for Advancing Low Latency Internetecare@homeFuture factories in the Cloud
Available from: 2017-10-31 Created: 2017-10-31 Last updated: 2018-03-08Bibliographically approved
Trobec, R., Tomasic, I., Rashkovska, A., Depolli, M. & Avbelj, V. (2018). Commercial ECG systems. In: SpringerBriefs in Applied Sciences and Technology: (pp. 101-114). Springer Verlag (9783319593388)
Open this publication in new window or tab >>Commercial ECG systems
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2018 (English)In: SpringerBriefs in Applied Sciences and Technology, Springer Verlag , 2018, no 9783319593388, p. 101-114Chapter in book (Refereed)
Abstract [en]

Besides the standard 12-lead ECG and the Holter monitor, today the market offers a wide range of modern ECG devices and services supported by the latest developments in ICT. This chapter is devoted to the current state-of-the-art from the area of ECG with a reduced number of leads. We focus on ECG wireless body sensors, differentiating between those that measure only heart rate and are used just for entertainment or during sport activities, and those that actually measure and analyze the ECG signal, with all its waveforms. The latter are elaborated in more detail, particularly our differential ECG sensor and its commercial version Savvy, for which we provide also a comprehensive comparison to other state-of-the-art sensors in that field. It is, however, inevitable that the state-of-the art will change in the future. The constant progress in ICT will always drive the development of new and improved ECG devices. 

Place, publisher, year, edition, pages
Springer Verlag, 2018
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-36188 (URN)10.1007/978-3-319-59340-1_6 (DOI)2-s2.0-85024504418 (Scopus ID)978-3-319-59338-8 (ISBN)
Available from: 2017-08-10 Created: 2017-08-10 Last updated: 2017-08-10Bibliographically approved
Tomasic, I., Tomasic, N., Trobec, R., Krpan, M. & Kelava, T. (2018). Continuous remote monitoring of COPD patients-justification and explanation of the requirements and a survey of the available technologies. Medical and Biological Engineering and Computing, 56(4), 547-569
Open this publication in new window or tab >>Continuous remote monitoring of COPD patients-justification and explanation of the requirements and a survey of the available technologies
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2018 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 56, no 4, p. 547-569Article, review/survey (Refereed) Published
Abstract [en]

Remote patient monitoring should reduce mortality rates, improve care, and reduce costs. We present an overview of the available technologies for the remote monitoring of chronic obstructive pulmonary disease (COPD) patients, together with the most important medical information regarding COPD in a language that is adapted for engineers. Our aim is to bridge the gap between the technical and medical worlds and to facilitate and motivate future research in the field. We also present a justification, motivation, and explanation of how to monitor the most important parameters for COPD patients, together with pointers for the challenges that remain. Additionally, we propose and justify the importance of electrocardiograms (ECGs) and the arterial carbon dioxide partial pressure (PaCO2) as two crucial physiological parameters that have not been used so far to any great extent in the monitoring of COPD patients. We cover four possibilities for the remote monitoring of COPD patients: continuous monitoring during normal daily activities for the prediction and early detection of exacerbations and life-threatening events, monitoring during the home treatment of mild exacerbations, monitoring oxygen therapy applications, and monitoring exercise. We also present and discuss the current approaches to decision support at remote locations and list the normal and pathological values/ranges for all the relevant physiological parameters. The paper concludes with our insights into the future developments and remaining challenges for improvements to continuous remote monitoring systems.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG, 2018
National Category
Medical Engineering
Identifiers
urn:nbn:se:mdh:diva-38922 (URN)10.1007/s11517-018-1798-z (DOI)000427851600002 ()29504070 (PubMedID)2-s2.0-85042753818 (Scopus ID)
Available from: 2018-04-05 Created: 2018-04-05 Last updated: 2018-09-19Bibliographically approved
Trobec, R., Tomasic, I., Rashkovska, A., Depolli, M. & Avbelj, V. (2018). ECG pilot studies. In: SpringerBriefs in Applied Sciences and Technology: (pp. 61-75). Springer Verlag (9783319593388)
Open this publication in new window or tab >>ECG pilot studies
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2018 (English)In: SpringerBriefs in Applied Sciences and Technology, Springer Verlag , 2018, no 9783319593388, p. 61-75Chapter in book (Refereed)
Abstract [en]

The use of wireless ECG body sensors in two pilot studies is presented. The first study, running at the Department of Cardiovascular Surgery of the University Medical Centre Ljubljana, is focused on the investigation of postoperative atrial fibrillation. The patients are monitored with wireless ECG body sensors one day before and five days after the surgery. The second study has been established at the primary care level in the Community Health Centre Ljubljana, with the intention to establish heart rhythm screening. As both studies are still in progress, we present just their setup and some interesting findings that emerged in their starting phase. Based on evidences from long-term ECG measurements, we identify several still open ECG research questions that could utilize the vast amount of long ECG recordings obtained from the pilot studies. 

Place, publisher, year, edition, pages
Springer Verlag, 2018
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-36186 (URN)10.1007/978-3-319-59340-1_4 (DOI)2-s2.0-85024479927 (Scopus ID)978-3-319-59338-8 (ISBN)
Available from: 2017-08-10 Created: 2017-08-10 Last updated: 2017-08-10Bibliographically approved
Tomasic, I., Khosraviani, K., Rosengren, P., Jornten-Karlsson, M. & Lindén, M. (2018). Enabling IoT based monitoring of patients' environmental parameters: Experiences from using OpenMote with OpenWSN and Contiki-NG. In: 2018 41st International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2018 - Proceedings: . Paper presented at 41st International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2018, 21 May 2018 through 25 May 2018 (pp. 330-334).
Open this publication in new window or tab >>Enabling IoT based monitoring of patients' environmental parameters: Experiences from using OpenMote with OpenWSN and Contiki-NG
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2018 (English)In: 2018 41st International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2018 - Proceedings, 2018, p. 330-334Conference paper, Published paper (Refereed)
Abstract [en]

Remote health monitoring can be leveraged by the IoT paradigm. We tested OpenMotes, state-of-the-art IoT devices featuring IEEE 802.15.4 protocol, with Contiki-NG and OpenWSN, two of the most popular IoT operating systems, for the purpose of obtaining data from the OpenMote's sensors. The procedure is not strait forward and requires additional programing of the operating systems. All the steps necessary to make the OpenMote work with Contiki-NG are presented in detail. We also describe how to use Copper Firefox add-on to access the sensors data over CoAP, as well as how to design a functional web interface in Node-RED for the sensors data. 

National Category
Medical Engineering
Identifiers
urn:nbn:se:mdh:diva-40365 (URN)10.23919/MIPRO.2018.8400063 (DOI)2-s2.0-85050245897 (Scopus ID)9789532330977 (ISBN)
Conference
41st International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2018, 21 May 2018 through 25 May 2018
Available from: 2018-08-17 Created: 2018-08-17 Last updated: 2018-08-17Bibliographically approved
Trobec, R., Tomasic, I., Rashkovska, A., Depolli, M. & Avbelj, V. (2018). Final remarks and conclusions. In: SpringerBriefs in Applied Sciences and Technology: (pp. 115-119). Springer Verlag (9783319593388)
Open this publication in new window or tab >>Final remarks and conclusions
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2018 (English)In: SpringerBriefs in Applied Sciences and Technology, Springer Verlag , 2018, no 9783319593388, p. 115-119Chapter in book (Refereed)
Abstract [en]

The content of our book, devoted to body sensors and their implications to electrocardiography, is recapitulated with this chapter. The identified challenges in long-term ECG data analytics are discussed. Based on the presented material, the near future of mHealth perspectives is foreseen regarding the technology, the usability, and the potential of increased users’ awareness for their own health. 

Place, publisher, year, edition, pages
Springer Verlag, 2018
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-36183 (URN)10.1007/978-3-319-59340-1_7 (DOI)2-s2.0-85024489784 (Scopus ID)978-3-319-59338-8 (ISBN)
Available from: 2017-08-10 Created: 2017-08-10 Last updated: 2017-08-10Bibliographically approved
Trobec, R., Tomasic, I., Rashkovska, A., Depolli, M. & Avbelj, V. (2018). From multichannel ECG to wireless body sensors. In: SpringerBriefs in Applied Sciences and Technology: (pp. 13-35). Springer Verlag (9783319593388)
Open this publication in new window or tab >>From multichannel ECG to wireless body sensors
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2018 (English)In: SpringerBriefs in Applied Sciences and Technology, Springer Verlag , 2018, no 9783319593388, p. 13-35Chapter in book (Refereed)
Abstract [en]

A more detailed description of multichannel electrocardiography and the differential lead aims to clarify why the multichannel ECG opens a path towards implementation of wireless wearable sensors. Several ways of how the differential lead could be used for heart rhythm monitoring are shown with options for analysis and interpretation of sensor ECG measurements. Finally, the most important vital signs that could be provided by a multifunctional body sensor are presented.

Place, publisher, year, edition, pages
Springer Verlag, 2018
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-36189 (URN)10.1007/978-3-319-59340-1_2 (DOI)2-s2.0-85024504523 (Scopus ID)
Available from: 2017-08-10 Created: 2017-08-10 Last updated: 2017-08-10Bibliographically approved
Trobec, R., Tomasic, I., Rashkovska, A., Depolli, M. & Avbelj, V. (2018). Introduction. In: SpringerBriefs in Applied Sciences and Technology: (pp. 1-12). Springer Verlag (9783319593388)
Open this publication in new window or tab >>Introduction
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2018 (English)In: SpringerBriefs in Applied Sciences and Technology, Springer Verlag , 2018, no 9783319593388, p. 1-12Chapter in book (Refereed)
Abstract [en]

The motivation and goals for the development of mobile health solutions are presented. Short history and background of the electrocardiography provide basic principles and facts related to the heart activity and elucidate the path from the measurement of conventional electrocardiogram to the monitoring of the heart by wireless body sensors. A bipolar differential lead is introduced, which has enabled the implementation of a small body sensor for capturing electric potential differences on the skin. The chapter concludes with guidelines on how to read this book and with a short overview of all book chapters.

Place, publisher, year, edition, pages
Springer Verlag, 2018
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-36185 (URN)10.1007/978-3-319-59340-1_1 (DOI)2-s2.0-85024486187 (Scopus ID)978-3-319-59338-8 (ISBN)
Available from: 2017-08-10 Created: 2017-08-10 Last updated: 2017-08-10Bibliographically approved
Tomasic, I., Petrovic, N., Fotouhi, H., Björkman, M. & Lindén, M. (2018). IoT enabled monitoring of patients’ environmental parameters supported by OpenWSN, OpenMote, and relational databases. In: Medicinteknikdagarna 2018 MTD 2018: . Paper presented at Medicinteknikdagarna 2018 MTD 2018, 08 Oct 2018, Umeå, Sweden.
Open this publication in new window or tab >>IoT enabled monitoring of patients’ environmental parameters supported by OpenWSN, OpenMote, and relational databases
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2018 (English)In: Medicinteknikdagarna 2018 MTD 2018, 2018Conference paper, Published paper (Refereed)
National Category
Engineering and Technology Medical Engineering
Identifiers
urn:nbn:se:mdh:diva-41739 (URN)
Conference
Medicinteknikdagarna 2018 MTD 2018, 08 Oct 2018, Umeå, Sweden
Projects
ESS-H - Embedded Sensor Systems for Health Research Profile
Available from: 2018-12-19 Created: 2018-12-19 Last updated: 2018-12-19Bibliographically approved
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