Abstract
Augmented reality for medical applications allows physicians to obtain an inside view into the patient without surgery. In this context, we present an augmented reality application running on a standard smartphone or tablet computer, providing visualizations of medical image data, overlaid with the patient, in a video see-through fashion. Our system is based on the registration of medical imaging data to the patient using a single 2D photograph of the patient. From this image, a 3D model of the patient’s face is reconstructed using a convolutional neural network, to which a pre-operative CT scan is automatically registered. For efficient processing, this is performed on a server PC. Finally, anatomical and pathological information is sent back to the mobile device and can be displayed, accurately registered with the live patient, on the screen. Hence, our cost-effective, markerless approach needs only a smartphone and a server PC for image processing. We present a qualitative and quantitative evaluation using real patient photos and CT from the clinical routine in facial surgery, reporting overall processing times and registration errors.
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Acknowledgment
This work received funding from the Austrian Science Fund (FWF) KLI 678-B31 (enFaced - Virtual and Augmented Reality Training and Navigation Module for 3D-Printed Facial Defect Reconstructions). Further, this work sees the support of CAMed - Clinical additive manufacturing for medical applications (COMET K-Project 871132), which is funded by the Austrian Federal Ministry of Transport, Innovation and Technology (BMVIT), and the Austrian Federal Ministry for Digital and Economic Affairs (BMDW), and the Styrian Business Promotion Agency (SFG), and the TU Graz Lead Project (Mechanics, Modeling and Simulation of Aortic Dissection). Moreover, the Summer Bachelor (SB) Program of the Institute of Computer Graphics and Vision (ICG) of the Graz University of Technology (TU Graz). Finally, we want to point out to our medical online framework Studierfenster (www.studierfenster.at), where an automatic single-shot 3D face reconstruction and registration module has been integrated, and a video tutorial is available on YouTube (3D Face Reconstruction and Registration with Studierfenster: https://www.youtube.com/watch?v=DbbFm9XxlGE).
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Karner, F. et al. (2020). Single-Shot Deep Volumetric Regression for Mobile Medical Augmented Reality. In: Syeda-Mahmood, T., et al. Multimodal Learning for Clinical Decision Support and Clinical Image-Based Procedures. CLIP ML-CDS 2020 2020. Lecture Notes in Computer Science(), vol 12445. Springer, Cham. https://doi.org/10.1007/978-3-030-60946-7_7
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DOI: https://doi.org/10.1007/978-3-030-60946-7_7
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