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Forschungsprojekt

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2020

Utilizing Game Engine Technology to Develop Medical Visualization Software

Teistler, M. ., Süncksen, M. ., & Reinhold, S. . (2020). Utilizing Game Engine Technology to Develop Medical Visualization Software. In 106th Scientific Assembly and Annual Meeting (RSNA 2020). Chicago, IL, USA: Radiological Society of North America. Abgerufen von https://archive.rsna.org/2020/20000761.html (Original work published Dezember 2020)
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Teistler, Michael

Forschungsprojekt

Neue Mensch-Computer-Schnittstellen in der Medizinischen Bildgebung

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Profilbereich

Informatik und Gestaltung

Forschungsfeld

Digitalisierung im Gesundheitswesen

Human-Computer-Interaction

Fachbereich

Fachbereich 3: Information und Kommunikation
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2020

Conference Paper

Michael Teistler

Matthias Süncksen

Sascha Reinhold
Simulation of Intraoperative Fluoroscopy in an Immersive Virtual Operating Room to Enhance Training Opportunities and Increase Radiation Awareness

Teistler, M. ., Süncksen, M. ., Reinhold, S. ., Bott, O. ., & Dresing, K. . (2020). Simulation of Intraoperative Fluoroscopy in an Immersive Virtual Operating Room to Enhance Training Opportunities and Increase Radiation Awareness. In 106th Scientific Assembly and Annual Meeting (RSNA 2020). Chicago, IL, USA: Radiological Society of North America. Abgerufen von https://archive.rsna.org/2020/20015344.html (Original work published Dezember 2020)
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Teistler, Michael

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Computerbasierte Ausbildung in der Medizinischen Bildgebung durch virtuelle und spielbasierte Lernumgebungen

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Profilbereich

Informatik und Gestaltung

Forschungsfeld

Digitalisierung im Gesundheitswesen

Human-Computer-Interaction

Fachbereich

Fachbereich 3: Information und Kommunikation
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2020

Conference Paper

Michael Teistler

Matthias Süncksen

Sascha Reinhold

Oliver Bott

Klaus Dresing
Simulation of scattered radiation during intraoperative imaging in a virtual reality learning environment

Süncksen, M. ., Bott, O. ., Dresing, K. ., & Teistler, M. . (2020). Simulation of scattered radiation during intraoperative imaging in a virtual reality learning environment. International Journal of Computer Assisted Radiology and Surgery , 15, 691–701. http://doi.org/10.1007/s11548-020-02126-x (Original work published April 2020)

Abstract

Purpose Scattered radiation, which occurs when using a C-arm for intraoperative radiography, can be better understood through interactive visualization. We developed a virtual reality (VR) approach for the simulation of scattered radiation (SSR) as part of a C-arm training system. In VR, it is important to avoid cyber sickness, which is often caused by increased latency between head motion and image presentation inside the head-mounted display. As the latency requirement interferes with the computational complexity of the SSR, the goal has been to maintain a low latency during the simultaneous computation of the SSR on moderate-cost consumer hardware. Methods For use with a VR C-arm simulator, a CUDA-based Monte Carlo SSR has been improved to utilize GPU resources unused by the VR image generation. Resulting SSR data are visualized through volume rendering with pseudo-colored scattered radiation superimposed onto the virtual operating room. The resulting interactive VR–SSR environment was evaluated with operating room personnel (ORP) and surgeons using questionnaires. Results Depending on the imaged body part and computation parameters, the required computation time to complete one SSR run was between 1.6 and 4.2 s (ankle) and between 7.9 and 14.9 s (thigh), and VR frame times from 11 to 12 ms (95th percentile). The system was evaluated with ORP (n = 46) and surgeons (n = 25). The median of professional C-arm experience was 5 (range 1 to 34) years (ORP) and 12.5 (range 2 to 48) years (surgeons), respectively. The demonstrated prototype was found useful by 78% of ORP and 88% of the surgeons. On a Likert scale, more than 90% of both groups “agreed fully” that the presented way of visualizing SSR in VR helps understanding intraoperative exposure to scattered radiation. Conclusions Leveraging off-the-shelf computer equipment, the feasibility of SSR and VR for interactive training has been demonstrated. Evaluation participants showed a high interest for the presented approach. Feedback suggests that the visualization experienced by the users helps understanding radiation hazards in the operating room.
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Teistler, Michael

Forschungsprojekt

Computerbasierte Ausbildung in der Medizinischen Bildgebung durch virtuelle und spielbasierte Lernumgebungen

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Profilbereich

Informatik und Gestaltung

Forschungsfeld

Digitalisierung im Gesundheitswesen

Human-Computer-Interaction

Fachbereich

Fachbereich 3: Information und Kommunikation
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2020

Journal Article

Matthias Süncksen

Oliver Bott

Klaus Dresing

Michael Teistler
Navigation in Desktop 3D Games with Gamepads: Comparison of Two Approaches for Inexperienced Players

Wentzlaff, T. ., Janke, F. ., Kockmeyer, M. ., Reinhold, S. ., & Teistler, M. . (2020). Navigation in Desktop 3D Games with Gamepads: Comparison of Two Approaches for Inexperienced Players. In Proceedings of the Conference on Mensch Und Computer (S. 165–168). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3404983.3410018

Abstract

Common approaches for gamepad-based navigation in desktop 3D games are often not suited for inexperienced players. In particular, novices have difficulties in simultaneously controlling movement and viewing direction in a virtual 3D scene. Here, we compare the currently predominant 3D navigation approach with an alternative approach that is inspired by early 3D games. 20 test users with little or no 3D gaming experience used both approaches to walk along a test course in a virtual 3D scene containing different obstacles. Using the alternative navigation approach, the users finished the course faster and with fewer errors than with the predominant navigation approach. In addition, the pragmatic and the hedonic quality of the alternative approach were rated higher. As a conclusion, the presented alternative approach should be given consideration when designing 3D (serious) games or similar applications for inexperienced players, not only for gamepad-based navigation, but also for comparable interfaces like the typical combination of keyboard and mouse control.
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2020

Conference Paper

Tobias Wentzlaff

Felix Janke

Mats Kockmeyer

Sascha Reinhold

Michael Teistler

inexperienced users

serious games

gamepad

3D games

user performance

2019

Simulationsbasiertes Lernspiel in der Ultraschallausbildung am Beispiel der Anästhesiologie

Teistler, M. ., Reinhold, S. ., Süncksen, M. ., & Frohnoff, U. . (2019). Simulationsbasiertes Lernspiel in der Ultraschallausbildung am Beispiel der Anästhesiologie. In Ultraschall Med, European Journal of Ultrasound (Bd. 40). Leipzig, Germany: Thieme. http://doi.org/10.1055/s-0039-1695967 (Original work published August 2019)
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2019

Conference Paper

Michael Teistler

Sascha Reinhold

Matthias Süncksen

Ulrich Frohnoff
Learning by playing – using computer games to enhance ultrasound education

Teistler, M. . (2019). Learning by playing – using computer games to enhance ultrasound education. Ultraschall Med, European Journal of Ultrasound, 40, 93–94. http://doi.org/10.1055/a-0833-9381 (Original work published Februar 2019)
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2019

Journal Article

Michael Teistler
Use of a Smartphone as Virtual Probe for Medical Ultrasound Training: Six Degrees of Freedom Tracking with ARCore

Jann, F. ., Reinhold, S. ., & Teistler, M. . (2019). Use of a Smartphone as Virtual Probe for Medical Ultrasound Training: Six Degrees of Freedom Tracking with ARCore. In Proceedings of Mensch Und Computer 2019 (S. 759–763). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3340764.3344904

Abstract

Six Degrees of Freedom (6DoF) controllers are usually expensive and/or complex to set up. A smartphone as 6DoF controller could be a cost-effective and simple alternative. Within the scope of this research, the application context of medical ultrasound training is addressed, in which the smartphone could be used to control a virtual probe. For this purpose, the difference in rotation and position tracking has been examined between an HTC Vive Tracker as an established reference system and a smartphone using ARCore. Additionally, the usability of the smartphone for controlling a virtual ultrasound probe has been qualitatively evaluated by nine subjects using a simplified test system. ARCore s 6DoF tracking is generally less reliable and accurate than the HTC Vive tracker. However, both the characteristics of the measured tracking errors and the qualitative evaluation show that an ARCore-based 6DoF tracking can be used as a simple and acceptable solution for controlling a virtual ultrasound probe.
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2019

Conference Paper

Florian Jann

Sascha Reinhold

Michael Teistler

computer based training

6DoF tracking

ARCore

simulation

smartphone

virtual ultrasound probe
Preparing and Guiding Forensic Crime Scene Inspections in Virtual Reality

Süncksen, M. ., Teistler, M. ., Hamester, F. ., & Ebert, L. . (2019). Preparing and Guiding Forensic Crime Scene Inspections in Virtual Reality. In Proceedings of Mensch Und Computer 2019 (S. 755–758). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3340764.3344903

Abstract

Computer-based scene reconstruction is a method for answering specific forensic questions in the context of accident or crime scenes. For the resulting 3D reconstruction, the use of virtual reality (VR) technology is a novel presentation form. For the presentation to a prosecutor, the need to put visible content into context awards special significance to the moderator, especially as in a VR presentation the head mounted display (HMD) cuts VR users off from their natural environment. We analyze use cases for the parties involved in the courtroom VR presentation and consider the author, moderator and spectator roles and their corresponding session types for creating, directing and watching the presentation. A prototype system has been implemented to allow for suitable VR interactions for the three roles. An evaluation of the system with 12 participants assuming the role of the spectator yielded positive results with regard to the user experience and utility.
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2019

Conference Paper

Matthias Süncksen

Michael Teistler

Frederik Hamester

Lars Ebert

Virtual Reality

Multi-User Interaction

Forensics

Law
Tangible Browsing for E-Books: Design and Evaluation of a Haptic Approach for Digital Reading

Sietas, J. ., Hansen, T. ., Ali, H. ., Reinhold, S. ., & Teistler, M. . (2019). Tangible Browsing for E-Books: Design and Evaluation of a Haptic Approach for Digital Reading. In Proceedings of Mensch Und Computer 2019 (S. 737–741). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3340764.3344900

Abstract

Sensory perception is an important part of reading. Physical books are experiencedhaptically, for instance when turning pages using one s fingers. When browsing e-bookson current reader devices, this tangibility is missing. Our research investigates if the userexperience of e-book readers can be improved by adding haptic feedback to the act of browsing. For this purpose an e-book reader with applied nylon wires has beendeveloped, with which browsing becomes tangible. The prototype has been tested withusers and compared to an e-book reader with a common touch-controlled scrollbar usingquantitative and qualitative methods. The results show that the scrollbar version enabledparticipants to navigate faster. However, the prototype with haptic feedback receivedbetter ratings in terms of pragmatic and hedonic quality as well as attractiveness.Additionally, tangible browsing enabled users to navigate more precisely. This wouldexplain, why participants appreciated the pragmatic qualities, even though the act of browsing was slower. Therefore haptic feedback can improve the acceptance of e-books.
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2019

Conference Paper

Jacob Sietas

Torsten Hansen

Hajar Ali

Sascha Reinhold

Michael Teistler

User Experience

Browsing

Searching

Sensory Perception

Haptics

Scrollbar
A Mixed Reality Environmental Simulation to Support Learning about Maritime Habitats: An Approach to Convey Educational Knowledge With a Novel User Experience

Taulien, A. ., Paulsen, A. ., Streland, T. ., Jessen, B. ., Wittke, S. ., & Teistler, M. . (2019). A Mixed Reality Environmental Simulation to Support Learning about Maritime Habitats: An Approach to Convey Educational Knowledge With a Novel User Experience. In Proceedings of Mensch Und Computer 2019 (S. 921–925). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3340764.3345382

Abstract

Environmental simulations allow for an easy and safe acquisition of knowledge about hard-to-reach habitats. We present a mixed-reality simulation that enables the user to convert (parts of) an arbitrary place like his or her own living room into a maritime habitat, using the example of the Baltic Sea. The user explores the virtual underwater world by walking in the real world. Typical characteristics and elements of the simulated habitat are integrated by adjusting light refraction and textures, and by adding animals, plants, and stones. The virtual animals respond to the user s movement. Rearranging real world objects causes the virtual world to change its appearance as well. User tests show that the environmental simulation provides an authentic insight into the Baltic Sea habitat and is well received with regard to the overall user experience. However, for first-time users, conveying more formal knowledge does not seem to work as well (yet) as compared to a conventional textbook approach.
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Teistler, Michael

Abteilung/Einrichtung

CIVU – Center for Interaction, Visualization and Usability

Fachbereich

Fachbereich 3: Information und Kommunikation
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2019

Conference Paper

Andre Taulien

Anika Paulsen

Tim Streland

Benedikt Jessen

Stefan Wittke

Michael Teistler

Environmental simulation

habitat

computer-supported learning

augmented reality

swarm simulation

lighting

texturing

mixed reality

3D scanning

ecosystem

Publikationen

2020

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