Markus Degen | University of Applied Sciences and Arts FHNW, Switzerland (original) (raw)

Papers by Markus Degen

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

Ergebnisse • Ergotherapeut/in kann mit „ERGO-Train“ (native App-Prototyp für AndroidGeräte/Java) ... more Ergebnisse • Ergotherapeut/in kann mit „ERGO-Train“ (native App-Prototyp für AndroidGeräte/Java) schnell individuelles Heimprogramm abgeben • Betroffene können App selbständig nutzen, finden Gestaltung ansprechend und sind motivierter Übungen durchzuführen • Smartphone-Sensoren messen Dorsalextension/-flexion, Radial-/ Ulnarabduktion und Pro-/Supination • App gibt Rückmeldung an Übende/n; Ergotherapeut/in kann Messungen statistisch auswerten und bei Bedarf an Arzt melden • Ergotherapeut/in kann Heimübungsintensität & -qualität beobachten • Betroffene schätzen direkte Rückmeldungen durch App, aber auch ausführlichere durch Therapeut/in bei Kontrollterminen Hintergrund • Nach der medizinischen Erstversorgung nach distaler Radiusfraktur sollten frühzeitig & regelmässig alle umliegenden Gelenke, die Finger & das betroffene Handgelenk belastungsfrei bewegt werden1 • Bei Komplikationen wird Ergo-/Handtherapie hinzugezogen • Dort Instruktion individuelles Heimprogramm & Abgabe auf Papier2 ...

Studies in health technology and informatics, 2019

Medical imaging is undergoing rapid change, induced by the increasing amount of image data, and a... more Medical imaging is undergoing rapid change, induced by the increasing amount of image data, and advances in fields such as artificial intelligence. In order for a radiology service provider to respond to these challenges, it needs to adapt its workflow. To inform optimization strategies, the way that processes and resources interact in the real world must be understood. We report on our experiences with an approach that consists of merging a variety of data sources into a data model that allows efficient interactive queries, and then providing highly interactive visualizations to explore the data. Two examples are discussed: animation of patient flow through the radiology workflow, and the use of energy consumption patterns to characterize operational modalities.

Poster: "ECR 2017 / C-1877 / The carbon footprint of radiology - measuring energy consumptio... more Poster: "ECR 2017 / C-1877 / The carbon footprint of radiology - measuring energy consumption of CT scanners and identifying opportunities for energy saving" by: "T. Heye1, M. Loser2, M. Degen3, D. Brodbeck3; 1Basel/CH, 2Erlangen/DE, 3Muttenz/CH"

Ergebnisse • Ergotherapeut/in kann mit „ERGO-Train“ (native App-Prototyp für Android-Geräte/Java)... more Ergebnisse • Ergotherapeut/in kann mit „ERGO-Train“ (native App-Prototyp für Android-Geräte/Java) schnell individuelles Heimprogramm abgeben • Betroffene können App selbständig nutzen, finden Gestaltung ansprechend und sind motivierter Übungen durchzuführen • Smartphone-Sensoren messen Dorsalextension/-flexion, Radial-/ Ulnarabduktion und Pro-/Supination • App gibt Rückmeldung an Übende/n; Ergotherapeut/in kann Messungen statistisch auswerten und bei Bedarf an Arzt melden • Ergotherapeut/in kann Heimübungsintensität & -qualität beobachten • Betroffene schätzen direkte Rückmeldungen durch App, aber auch ausführlichere durch Therapeut/in bei Kontrollterminen Hintergrund • Nach der medizinischen Erstversorgung nach distaler Radiusfraktur sollten frühzeitig & regelmässig alle umliegenden Gelenke, die Finger & das betroffene Handgelenk belastungsfrei bewegt werden1 • Bei Schwierigkeiten hierbei wird Ergo-/Handtherapie hinzugezogen • Dort Instruktion individuelles Heimprogramm & Abgabe au...

Proceedings of the International Conference on Health Informatics, 2013

Hospitals collect large amounts of data during their daily operation. Next to its immediate prima... more Hospitals collect large amounts of data during their daily operation. Next to its immediate primary purpose, this data also contains implicit information that can be used to improve clinical and administrative processes. We present a case study of how strategic infrastructure planning can be supported by the analysis of enriched patient flow through a hospital. Data from various hospital information systems was collected, enriched with topographical and organizational data, and integrated into a coherent data store. Common analysis tools and methods do not support exploration and sense-making well for such large and complex problems. We therefore developed a highly interactive visual analytics application that offers various views onto the data, and provides fast access to details in order to show them in context. The analysts were able to validate their experiences, confirm hypotheses and generate new insights. As a result, several subsystems of clinics were identified that will play a central role on the future hospital campus. This approach was successful enough that we envision to extend it towards other process optimization tasks in hospitals.

Proceedings of the International Conference on Health Informatics, 2012

A hospital emergency department is a complex work environment, where the availability of the righ... more A hospital emergency department is a complex work environment, where the availability of the right information at the right time is crucial for efficient and safe operation. The current technology in use for communication and information management is mostly based on telephones and stationary personal computers. Modern smartphones with their computational power, voice, image, and video capabilities have the potential to play a significant role in improving the flow of information in the emergency department. We developed a system that explicitly supports the work flows of an emergency department. In addition to mobile access to patient data and notifications about the availability of diagnostic findings, it provides the possibility to supply media captured on-site to the patient record, and directly supports the consultation process.

Journal of Healthcare Engineering

Objective. To investigate whether a microelectromechanical system (MEMS) inertial sensor module i... more Objective. To investigate whether a microelectromechanical system (MEMS) inertial sensor module is as accurate as fiber-optic gyroscopes when classifying subjects as normal for clinical stance and gait balance tasks. Methods. Data of ten healthy subjects were recorded simultaneously with a fiber-optic gyroscope (FOG) system of SwayStar™ and a MEMS sensor system incorporated in the Valedo® system. Data from a sequence of clinical balance tasks with different angle and angular velocity ranges were assessed. Paired t-tests were performed to determine significant differences between measurement systems. Cohen’s kappa test was used to determine the classification of normal balance control between the two sensor systems when comparing the results to a reference database recorded with the FOG system. Potential cross-talk errors in roll and pitch angles when neglecting yaw axis rotations were evaluated by comparing 2D FOG and 3D MEMS recordings. Results. Statistically significant (α=0.05) d...

Acta Crystallographica Section A Foundations and Advances

Automated collection and storage of medical data leads to large amounts of heterogeneous and time... more Automated collection and storage of medical data leads to large amounts of heterogeneous and time-dependent information. Out of this follows the problem of how to access and interpret this data, in order to support therapeutic decision making. Telemedical disease management holds great potential for the efficient and effective treatment of chronic diseases. The realization of this potential however depends on finding a solution to the information overload problem. This paper describes a highly interactive visualization system that gives caregivers an overview of trends and critical patterns, and provides easy access to details without loosing the big picture. We report on the results from two case studies that confirm the validity of this approach and suggest that it is well suited to enable large-scale telemedical disease management programs.

Swiss Medical Informatics, Dec 18, 2005

Communications in Computer and Information Science, 2015

We developed a visualization tool and a methodology to support strategic planning of hospital ser... more We developed a visualization tool and a methodology to support strategic planning of hospital service portfolios. Hospitals in Switzerland are reimbursed with a fixed fee per case. The fixed-fee model makes medical services comparable from a financial point of view. In order to take advantage of this model, the data that characterizes the medical services must be operationalized. The method that we developed, centers around a visual metaphor that provides the basis for strategic thinking. It is complemented by a visualization tool that allows visualization, analysis, and modification of service portfolios. Special features enable the tool to be used during live planning sessions. We describe the method, the tool, and its application in strategy workshops for infrastructure planning, reorganization, and resource optimization decisions.

Der Schweizer Informatik Tag widmet sich den gesellschaftlichen Bezügen der Informatik und steht ... more Der Schweizer Informatik Tag widmet sich den gesellschaftlichen Bezügen der Informatik und steht unter dem Titel "Information und Kommunikation-Werte, Verantwortungen, Risiken". Ein Überblick über die Themen wurde in Heft 3 des Informatik Spektrum veröffentlicht. Mit Freude kann nun bekannt gegeben werden, dass bis heute folgende Vortragende zugesagt haben: Free as in Freedom Es ist wichtig, dass das "frei" in "freie Software" nicht mit "kostenlos" oder "gratis" übersetzt wird. Vielmehr soll es als "frei" im Sinne von "Freiheit" (Freedom) interpretiert werden. Diese Freiheiten umfassen die folgenden Ausprägungen [2]:

Swiss Medical Informatics, Sep 27, 2014

Biomedical Engineering / Biomedizinische Technik, 2000

In 2012 inpatient financing for hospitals in Switzerland was changed from a system based on cost ... more In 2012 inpatient financing for hospitals in Switzerland was changed from a system based on cost per case to a system based on a fixed fee per case. The fixed-fee model makes medical services comparable from a financial point of view. Characterizing medical service portfolios in this way, creates large amounts of high-dimensional data. In order to operationalize this information and use it as a factual basis for decision support, we developed a visualization tool and a methodology to support strategic planning of hospital service portfolios. The method centers around a visual metaphor that provides the basis for strategic thinking. It is complemented by a visualization tool that allows visualization, analysis, and modification of service portfolios. Extensive support is provided for visual comparison of different scenarios. Special features enable the tool to be used during live planning sessions. The system was used in strategy workshops in over forty hospitals, and has contributed...

An effective way to treat low back pain is through active and supervised movement exercises. The ... more An effective way to treat low back pain is through active and supervised movement exercises. The effectiveness of such exercises however is limited by inadequate awareness of patients of their own posture, requiring the continuous supervision by a physical therapist. To increase patient independence and support physical therapy of low back pain, we built a sensor system that provides real-time

International Joint Conference on Biomedical Engineering Systems and Technologies, 2009

Low back pain is an important problem in industrialized countries. Two key factors limit the effe... more Low back pain is an important problem in industrialized countries. Two key factors limit the effectiveness of physiotherapy: low compliance of patients with repetitive movement exercises, and inadequate awareness of patients of their own posture. The Backtrainer system addresses these problems by real-time monitoring of the spine position, by providing a framework for most common physiotherapy exercises for the low back, and by providing feedback to patients in a motivating way. A minimal sensor configuration was identified as two inertial sensors that measure the orientation of the lower back at two points with three degrees of freedom. The software was designed as a flexible platform to experiment with different hardware, and with various feedback modalities. Basic exercises for two types of movements are provided: mobilizing and stabilizing. We developed visual feedback -abstract as well as in the form of a virtual reality game -and complemented the on-screen graphics with an ambient feedback device. The system was evaluated during five weeks in a rehabilitation clinic with 26 patients and 15 physiotherapists. Subjective satisfaction of subjects was good, and we interpret the results as encouraging indication for the adoption of such a therapy support system by both patients and therapists.

Communications in Computer and Information Science, 2010

... Dominique Brodbeck 1 , Markus Degen 1 , Michael Stanimirov 1 , Jan Kool 2 , Mandy Scheermesse... more ... Dominique Brodbeck 1 , Markus Degen 1 , Michael Stanimirov 1 , Jan Kool 2 , Mandy Scheermesser 2 , Peter Oesch 3 , and Cornelia Neuhaus 4 ... This range is visualized to the patient by a white ball moving within the predefined range limits. ...

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

Studies in health technology and informatics, 2019

Proceedings of the International Conference on Health Informatics, 2013

Proceedings of the International Conference on Health Informatics, 2012

Journal of Healthcare Engineering

Acta Crystallographica Section A Foundations and Advances

Swiss Medical Informatics, Dec 18, 2005

Communications in Computer and Information Science, 2015

Swiss Medical Informatics, Sep 27, 2014

Biomedical Engineering / Biomedizinische Technik, 2000

International Joint Conference on Biomedical Engineering Systems and Technologies, 2009

Communications in Computer and Information Science, 2010

In a field study we compared usage and acceptance of a mobile lifestyle coaching application with... more In a field study we compared usage and acceptance of a mobile lifestyle coaching application with a traditional web application. The participants (N=40) documented health behaviour (activity and healthy nutrition) daily, trying to reach a defined goal. In addition, health questionnaires and social facilitation features were provided to enhance motivation. Acceptance of the system was high in both groups. The mobile application was perceived as being more attractive and fun to use. Analysis of the usage patterns showed significant differences between the mobile and the web-based application. There was no significant difference between the two groups in terms of task compliance and health behaviour. The effectiveness of mobility and social facilitation was confounded by other variables, e.g. gender and age. Initial motivation for lifestyle change was related to the overall compliance and goal achievement of the participant. Implications show ways to strengthen the persuasiveness of health applications on mobile devices.