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Babic, Ankica
Publications (10 of 70) Show all publications
Gharehbaghi, A., Ask, P., Lindèn, M. & Babic, A. (2015). A Novel Model for Screening Aortic Stenosis Using Phonocardiogram. In: Henrik Mindedal and Mikael Persson (Ed.), 16th Nordic-Baltic Conference on Biomedical Engineering: . Paper presented at 16th Nordic-Baltic Conference on Biomedical Engineering, 16. NBC & 10. MTD 2014 joint conferences. October 14-16, 2014, Gothenburg, Sweden (pp. 48-51). Springer Science Business Media.
Open this publication in new window or tab >>A Novel Model for Screening Aortic Stenosis Using Phonocardiogram
2015 (English)In: 16th Nordic-Baltic Conference on Biomedical Engineering / [ed] Henrik Mindedal and Mikael Persson, Springer Science Business Media , 2015, 48-51 p.Conference paper (Refereed)
Abstract [en]

This study presents an algorithm for screening aortic stenosis, based on heart sound signal processing. It benefits from an artificial intelligent-based (AI-based) model using a multi-layer perceptron neural network. The AI-based model learns disease related murmurs using non-stationary features of the murmurs. Performance of the model is statistically evaluated using two different databases, one of children and the other of elderly volunteers with normal heart condition and aortic stenosis. Results showed a 95% confidence interval of the high accuracy/sensitivity (84.1%-86.0%)/(86.0%-88.4%) thus exhibiting a superior performance to a cardiologist who relies on the conventional auscultation. The study suggests including the heart sound signal in the clinical decision making due to its potential to improve the screening accuracy.

Place, publisher, year, edition, pages
Springer Science Business Media, 2015
Series
IFMBE Proceedings, ISSN 1680-0737 ; 48
Keyword
Aortic stenosis, phonocardiography, heart sound, heart murmurs
National Category
Biomedical Laboratory Science/Technology
Identifiers
urn:nbn:se:liu:diva-112774 (URN)10.1007/978-3-319-12967-9_13 (DOI)000347893000013 ()978-3-319-12966-2 (ISBN)978-3-319-12967-9 (ISBN)
Conference
16th Nordic-Baltic Conference on Biomedical Engineering, 16. NBC & 10. MTD 2014 joint conferences. October 14-16, 2014, Gothenburg, Sweden
Available from: 2014-12-15 Created: 2014-12-15 Last updated: 2017-07-13Bibliographically approved
Gharehbaghi, A., Ask, P. & Babic, A. (2015). A pattern recognition framework for detecting dynamic changes on cyclic time series. Pattern Recognition, 48(3), 696-708.
Open this publication in new window or tab >>A pattern recognition framework for detecting dynamic changes on cyclic time series
2015 (English)In: Pattern Recognition, ISSN 0031-3203, E-ISSN 1873-5142, Vol. 48, no 3, 696-708 p.Article in journal (Refereed) Published
Abstract [en]

This paper proposes a framework for binary classification of the time series with cyclic characteristics. The framework presents an iterative algorithm for learning the cyclic characteristics by introducing the discriminative frequency bands (DFBs) using the discriminant analysis along with k-means clustering method. The DFBs are employed by a hybrid model for learning dynamic characteristics of the time series within the cycles, using statistical and structural machine learning techniques. The framework offers a systematic procedure for finding the optimal design parameters associated with the hybrid model. The proposed  model is optimized to detect the changes of the heart sound recordings (HSRs) related to aortic stenosis. Experimental results show that the proposed framework provides efficient tools for classification of the HSRs based on the heart murmurs. It is also evidenced that the hybrid model, proposed by the framework, substantially improves the classification performance when it comes to detection of the heart disease.

Place, publisher, year, edition, pages
Elsevier, 2015
Keyword
Hybrid model, cyclic time series, time series, phonocardiogram, systolic murmurs
National Category
Biomedical Laboratory Science/Technology Medical Biotechnology
Identifiers
urn:nbn:se:liu:diva-110177 (URN)10.1016/j.patcog.2014.08.017 (DOI)000347747000008 ()
Available from: 2014-09-04 Created: 2014-09-04 Last updated: 2017-12-05Bibliographically approved
Kanza, G. & Babic, A. (2015). Agile Development for Smart User Interfaces to Cancer Registries. In: : . Paper presented at 6th European Conference of the International Federation for Medical and Biological Engineering (pp. 711-714). Springer.
Open this publication in new window or tab >>Agile Development for Smart User Interfaces to Cancer Registries
2015 (English)Conference paper (Refereed)
Abstract [en]

The paper studies different user interfaces developed for visualizing data mined from cancer registries. The motivation behind this research is a need to create more flexible and smart, easy to use interfaces that will assist users in utilizing and exploring clinical information. The design process combined Parallel and Iterative design process models together with Personal Kanban for managing the development process. The developed prototype provides users with a choice of several data visualization possibilities, depending on the user’s tasks and goals. A preliminary user interface was evaluated resulting in recommendations for further development. Heuristic evaluation with potential experts had scores on all the high scores on all the design dimensions: H1=visibility of system status; H2=match between the system and the real world; H3=user control and freedom; H4=consistency and standards; H5=error prevention; H6=recognition rather than recall; H7=flexibility and efficiency of use; H8=aesthetic and minimalist design; H9=help users recognize, diagnose, and recover from errors; and H10=help and documentation.

Place, publisher, year, edition, pages
Springer, 2015
Series
IFMBE Proceedings, ISSN 1680-0737 ; 45
Keyword
Cancer registries; User interface; Personal Kanban; Parallel and Iterative design; Data visualization
National Category
Information Systems, Social aspects Computer Systems
Identifiers
urn:nbn:se:liu:diva-112775 (URN)10.1007/978-3-319-11128-5_177 (DOI)000349454200177 ()978-3-319-11127-8 (ISBN)978-3-319-11128-5 (ISBN)
Conference
6th European Conference of the International Federation for Medical and Biological Engineering
Available from: 2014-12-15 Created: 2014-12-15 Last updated: 2017-07-13
Berntsen, E. & Babic, A. (2015). Information System for Postmarket Surveillance of Total Joint Prostheses. In: Henrik Mindedal ; Mikael Persson (Ed.), 16th Nordic-Baltic Conference on Biomedical Engineering: . Paper presented at 16th Nordic-Baltic Conference on Biomedical Engineering: 16. NBC & 10. MTD 2014 Joint Conferences, October 14-16, 2014, Gothenburg, Sweden (pp. 24-27). Springer.
Open this publication in new window or tab >>Information System for Postmarket Surveillance of Total Joint Prostheses
2015 (English)In: 16th Nordic-Baltic Conference on Biomedical Engineering / [ed] Henrik Mindedal ; Mikael Persson, Springer, 2015, 24-27 p.Conference paper (Refereed)
Abstract [en]

Storage, integration and presentation of clinical data is an important aspect of any modern medical research. The Biomaterials research group at the Haukeland University Hospital uses both their own locally generated clinical data and external registry data to examine explanted joint implants. As a solution to this challenge, a system prototype was developed that would enable further integration of these information systems into a multi-user environment.

The system allows importing registry data and matching it with local data, viewing and editing of this information and exporting the integrated data for further statistical analysis. An evaluation consisting of both user testing and heuristic evaluation was carried out and generated constructive feedback.

The prototype demonstrates the feasibility of combining these data sources in a single database and the future possibility of exposing parts of this information to external users through a web application.

Future integration of external sources could improve the information management of biobank data for postmarket surveillance of medical devices.

Place, publisher, year, edition, pages
Springer, 2015
Series
IFMBE Proceedings, ISSN 1680-0737 ; 48
Keyword
Data integration; postmarket surveillance; information sharing
National Category
Computer Systems
Identifiers
urn:nbn:se:liu:diva-112769 (URN)10.1007/978-3-319-12967-9_7 (DOI)000347893000007 ()978-3-319-12966-2 (ISBN)978-3-319-12967-9 (ISBN)
Conference
16th Nordic-Baltic Conference on Biomedical Engineering: 16. NBC & 10. MTD 2014 Joint Conferences, October 14-16, 2014, Gothenburg, Sweden
Available from: 2014-12-15 Created: 2014-12-15 Last updated: 2017-07-13Bibliographically approved
Fjellanger, M. B. & Babic, A. (2014). Digital storytelling as a tool for conveying cancer diagnoses to children. In: MTD Abstract Proceedings, Medicinteknikdagarna Göteborg, 14-16 oktober, 2014: . Paper presented at Medicinteknikdagarna, Göteborg, 14-16 oktober, 2014. .
Open this publication in new window or tab >>Digital storytelling as a tool for conveying cancer diagnoses to children
2014 (English)In: MTD Abstract Proceedings, Medicinteknikdagarna Göteborg, 14-16 oktober, 2014, 2014Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

The experience of receiving a diagnosis of a life-threatening illness will be difficult for many, especially for children as they often have inadequate knowledge and understanding of what this entails (Fottland, 2004). It is therefore important that they receive thorough and accurate information about the disease together with the diagnosis, and that this information is presented in a child -friendly way. This is the essence of this project. The type of diagnosis chosen for this project is cancer, as research shows that this diagnosis evokes difficult emotions for many children (Fottland, 2004). According to Fottland (2004) many children have the perception that cancer implies death.

The project goal is to create a digital storytelling tool that presents a story of a child that gets a cancer diagnosis and how the story main character experiences it, as well as what is happening in the body as the treatment develops. This way children will learn about the emotional as well as the medical aspects of the disease. The project has two focus areas; a psychological to facilitate the story-telling in a child-friendly learning way, as well as a technical with focus on interaction design.

National Category
Computer Systems
Identifiers
urn:nbn:se:liu:diva-112771 (URN)
Conference
Medicinteknikdagarna, Göteborg, 14-16 oktober, 2014
Available from: 2014-12-15 Created: 2014-12-15 Last updated: 2017-07-13Bibliographically approved
Berg Andersen, P. & Babic, A. (2014). Self-reporting for Bipolar Patients through Smartphone. In: Laura M. Roa Romero (Ed.), IFMBE Proceedings: . Paper presented at XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013, MEDICON 2013 (pp. 1358-1361). Springer, 41.
Open this publication in new window or tab >>Self-reporting for Bipolar Patients through Smartphone
2014 (English)In: IFMBE Proceedings / [ed] Laura M. Roa Romero, Springer, 2014, Vol. 41, 1358-1361 p.Conference paper, Published paper (Refereed)
Abstract [en]

Self-reporting of symptoms is widely used and validated in the field of psychiatry, also in the context of bipolar disorder. This paper presents work on a self-reporting system for bipolar patients using a smartphone to gather data from the patient, which is communicated to a server via a secure connection. The data is presented in a web application to a patient for his/hers self-monitoring, and to medical personnel associated with the treatment of the patient. The work described here is part of an ongoing system development and gives insights into the field research and motivation for choosing Life Charting Methodology as a structural element. Leaning on such well accepted and validated therapeutic tools should secure validity and feasibility of the final system that would appear to patients as familiar and easy to use. Consequently, the application is expected to be directly understandable to everyone involved in the treatment. Programming solutions will capture the essence, but will be adjusted to the electronic environment which will be validated for its correctness and user-friendliness.

Place, publisher, year, edition, pages
Springer, 2014
Series
IFMBE Proceedings, ISSN 1680-0737 ; 41
Keyword
Self-reporting, psychiatry, bipolar disorder, information system development, application, life charting
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-98732 (URN)10.1007/978-3-319-00846-2_336 (DOI)2-s2.0-84891315769 (Scopus ID)978-3-319-00845-5 (ISBN)978-3-319-00846-2 (ISBN)
Conference
XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013, MEDICON 2013
Available from: 2013-10-12 Created: 2013-10-12 Last updated: 2015-03-31
Babic, A. (2014). The era of digital and electronic waste. In: : . Paper presented at International Interdisciplinary Out of the Box Summer School. .
Open this publication in new window or tab >>The era of digital and electronic waste
2014 (English)Conference paper, Oral presentation only (Other academic)
National Category
Information Systems, Social aspects
Identifiers
urn:nbn:se:liu:diva-112777 (URN)
Conference
International Interdisciplinary Out of the Box Summer School
Available from: 2014-12-15 Created: 2014-12-15 Last updated: 2015-01-19
Babic, A., Peterzen, B., Lönn, U. & Casimir Ahn, H. (2013). Case Based Reasoning in a Web Based Decision Support System for Thoracic Surgery. In: L.M. Roa Romero (Ed.), IFMBE Proceedings 41: . Paper presented at XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013, MEDICON 2013 (pp. 1413-1416). Springer.
Open this publication in new window or tab >>Case Based Reasoning in a Web Based Decision Support System for Thoracic Surgery
2013 (English)In: IFMBE Proceedings 41 / [ed] L.M. Roa Romero, Springer, 2013, 1413-1416 p.Conference paper, Published paper (Refereed)
Abstract [en]

Case Based Reasoning (CBR) methodology provides means of collecting patients cases and retrieving them following the clinical criteria. By studying previously treated patients with similar backgrounds, the physician can get a better base for deciding on treatment for a current patient and be better prepared for complications that might occur during and after surgery. This could be taken advantage of when there is not enough data for a statistical analysis, but electronic patient records that provide all the relevant information to assure a timely and accurate clinical insight into a patient particular situation.

We have developed and implemented a CBR engine using the Nearest Neighbor algorithm. A patient case is represented as a combination of perioperative variable values and operation reports. Physicians could review a selected number of cases by browsing through the electronic patient record and operational narratives which provides an exhaustive insight into the previously treated cases. An evaluation of the search algorithm suggests a very good functionality.

Place, publisher, year, edition, pages
Springer, 2013
Series
IFMBE Proceedings, ISSN 1680-0737 ; 41
Keyword
Case based reasoning, Nearest Neighbor algorithm, heart failure, web- based systems, thoracic surgery
National Category
Medical Engineering
Identifiers
urn:nbn:se:liu:diva-98731 (URN)10.1007/978-3-319-00846-2_350 (DOI)978-3-319-00845-5 (ISBN)978-3-319-00846-2 (ISBN)
Conference
XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013, MEDICON 2013
Available from: 2013-10-12 Created: 2013-10-12 Last updated: 2013-10-24
Babic, A. (2013). Case Based Reasoningin Support of the LVAD Surgical Treatment. In: Medicinteknikdagarna 2013, Electronic Proceedings: . Paper presented at Medicinteknikdagarna 2013. .
Open this publication in new window or tab >>Case Based Reasoningin Support of the LVAD Surgical Treatment
2013 (English)In: Medicinteknikdagarna 2013, Electronic Proceedings, 2013Conference paper, Published paper (Refereed)
National Category
Medical Engineering
Identifiers
urn:nbn:se:liu:diva-99985 (URN)
Conference
Medicinteknikdagarna 2013
Available from: 2013-10-24 Created: 2013-10-24 Last updated: 2013-10-24
Berntsen, E. & Babic, A. (2013). Cherry: mobile application for children with cancer. In: Christoph Ulrich Lehmann, Elske Ammenwerth, Christian Nøhr (Ed.), MEDINFO 2013: proceedings of the 14th World Congress on Medical and Health Informatics. Paper presented at MedInfo 2013 - The 14th World Congress on Medical and Health Informatics, 20-23 August 2013, Copenhagen, Denmark (pp. 1168). IOS Press.
Open this publication in new window or tab >>Cherry: mobile application for children with cancer
2013 (English)In: MEDINFO 2013: proceedings of the 14th World Congress on Medical and Health Informatics / [ed] Christoph Ulrich Lehmann, Elske Ammenwerth, Christian Nøhr, IOS Press, 2013, 1168- p.Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

The Cherry project seeks to address the information needs of young cancer patients, their parents, and health care providers. It aims at helping the patients to understand various aspects of their disease and treatment, and allow them to assess and record their disease related quality of life. It uses elements of social media to offer a meeting point with the physician and peers. Information is presented in a way that is both understandable and appealing to young children in school age and adolescents. Preschool children will be studied as a separate user group to address their needs and possibilities to meet them. The Cherry system wants to utilize Internet and mobile technologies to benefit patient outcome.

Place, publisher, year, edition, pages
IOS Press, 2013
Series
Studies in Health Technology and Informatics, ISSN 0926-9630 (print), 1879-8365 (online) ; 192
Keyword
mobile application, diary, semnatic summary, children cancer
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-98729 (URN)10.3233/978-1-61499-289-9-1168 (DOI)23920942 (PubMedID)978-1-61499-288-2 (ISBN)978-1-61499-289-9 (ISBN)
Conference
MedInfo 2013 - The 14th World Congress on Medical and Health Informatics, 20-23 August 2013, Copenhagen, Denmark
Available from: 2013-10-12 Created: 2013-10-12 Last updated: 2013-10-18
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