Markus Königshofer

Advancing dental surgical training with biomimetic lattice reinforcement in polyjet-printed models

Gunpreet Oberoi, Erik Kornfellner, Markus Königshofer, Bernhard Rosenauer et autres

BACKGROUND/ PURPOSE: Realistic soft-tissue behaviour is essential for surgical training, yet most additively manufactured models remain mechanically homogeneous. The purpose of this study was to investigate whether embedding biomimetic lattice architectures within standard PolyJet elastomers can improve the haptic and biomechanical realism …

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A Novel Compact Pneumatic Turbine-Driven Transducer for MR Elastography

Lorenz Kiss, Jean-Lynce Gnanago, Stefan Wampl, Marcos Wolf et autres

Magnetic Resonance Elastography (MRE) can be used to estimate biomechanical parameters, e.g., shear stiffness of human tissue. As such, it is an imaging-based extension of palpation. To perform MRE, mechanical waves are induced into the tissue by transducers or actuators. The resulting …

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Staying in Place: In Vitro Comparison of Extracorporeal Membrane Oxygenation Cannula Fixation for Dislodgment Prevention

R. Moayedifar, Johanna Schachl, Markus Königshofer, Martin Stoiber et autres

Background/Objectives: Secure large-bore cannula insertion is critical for effective extracorporeal membrane oxygenation (ECMO), as inadequate fixation can lead to complications such as infection, dislodgment, and life-threatening events. With inconsistent guidelines for ECMO line management, this study compares the effectiveness of traditional suture …

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Design of a new MRE transducer - placed between tissue and coil

Lorenz Kiss, Marcos Wolf, Stefan Wampl, Tito Körner et autres

Motivation: Design of a compact MRE transducer prototype that fits between patient and coil for direct stimulation of tissue. Goal(s): The main goal of this study is to design and construct a new MRE transducer that can independently vary frequency and amplitude, …

Cold atmospheric plasma therapy as a novel treatment for Berlin Heart EXCOR pediatric cannula infections

Johanna Schachl, Markus Königshofer, Martin Stoiber, Martina Socha et autres

Abstract Background Cold atmospheric plasma (CAP) therapy has been recognized as effective treatment option for reducing bacterial load in chronic wounds, such as adult ventricular assist device (VAD) driveline exit‐site infections. Currently, there have been no reports on the safety and efficacy …

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Measured and simulated mechanical properties of additively manufactured matrix-inclusion multimaterials fabricated by material jetting

Erik Kornfellner, Markus Königshofer, Lisa Krainz, Arno Krause et autres

Modern additive manufacturing enables the simultaneous processing of different materials during the printing process. While multimaterial 3D printing allows greater freedom in part design, the prediction of the mix-material properties becomes challenging. One type of multimaterials are matrix-inclusion composites, where one material …

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Design and Testing of Additively-Manufactured Reinforced Polymer for Development of a Suturing Hands-On Training Model

Gunpreet Oberoi, Ewald Unger, Erik Kornfellner, Markus Königshofer et autres

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An evaluation of physical and augmented patient-specific intracranial aneurysm simulators on microsurgical clipping performance and skills: a randomized controlled study

Philippe Dodier, Lorenzo Civilla, Ammar Mallouhi, Lukas Haider et autres

OBJECTIVE: In the era of flow diversion, there is an increasing demand to train neurosurgeons outside the operating room in safely performing clipping of unruptured intracranial aneurysms. This study introduces a clip training simulation platform for residents and aspiring cerebrovascular neurosurgeons, with …

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Elastic and dimensional properties of newly combined 3D-printed multimaterials fabricated by DLP stereolithography

Erik Kornfellner, Markus Königshofer, Ewald Unger, Francesco Moscato

In the field of stereolithography 3D printing, the portfolio of commercially available photopolymers has burgeoned. Each material family possesses its individual properties. However, corresponding products with specific requirements remain a major challenge. This gap could be filled by combining existing materials. This …

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P81: Development Of A Pre-Operative Planning Tool For Patients With Mitral Regurgitation

Mojgan Ghodrati-Misek, Markus Königshofer, Max Haberbusch, Philipp Aigner et autres

Mitral regurgitation is the most frequent valve disease in patients over the age of 65 years. In patients with high surgical risk, transcatheter mitral valve intervention (TMVI) is the preferred therapy. However, patient selection for this therapy remains a challenge. This study …

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Quantification of paravalvular leaks associated with TAVI implants using 4D MRI in an aortic root phantom made possible by the use of 3D printing

Philipp Aigner, Eleonora Sella Bart, Sebastiano Panfili, Tito Körner et autres

Introduction: Transcatheter aortic valve implantation (TAVI) has become an alternative to surgical replacement of the aortic valve elderly patients. However, TAVI patients may suffer from paravalvular leaks (PVL). Detecting and grading is usually done by echocardiography, but is limited by resolution, 2D …

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P33: Evaluation of the effect of mitral annular calcification on left heart hemodynamics using fluid-structure interaction simulation

Mojgan Ghodrati, Markus Königshofer, Max Haberbusch, Philipp Aigner et autres

Background: Mitral annular calcification (MAC) is a degenerative disease that is associated with cardiovascular comorbidities. MAC leads to severe mitral stenosis and/or mitral insufficiency followed by significant hemodynamic variations within the left atrium (LA) and left ventricle (LV). This study aims to …

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