Papers by Thomas Winklehner
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Access of medical image data for viewing or surgical planning tasks is currently restricted to de... more Access of medical image data for viewing or surgical planning tasks is currently restricted to dedicated workstations. Increasing computation power, graphical capabilities and interaction modes of modern mobile computing devices as well as the increasing adaption of medical doctors to their usage enables the creation of a new user experience when using medical image data. In this work an application based on a standalone mobile device in which data can be accessed and downloaded from a server is presented. Data can then be visualized and surgical planning performed. A technical evaluation of the established data processing pipeline as well all the modules of the application with multiple users was performed. Results demonstrate the feasibility of the data processing pipeline, visualization of twodimensional and three-dimensional medical image data and performance of surgical planning on a mobile device with a common hardware configuration. In addition, a usability study was conducte...
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American Journal of Obstetrics and Gynecology
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Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society, 2017
In pelvic organ prolapse (POP), the organs are pushed downward along the lines of gravity, so mea... more In pelvic organ prolapse (POP), the organs are pushed downward along the lines of gravity, so measurements along this longitudinal body axis are desirable. We propose a universally applicable 3D coordinate system that corrects for changes in pelvic inclination and that allows the localization of any point in the pelvis at rest or under dynamic conditions on magnetic resonance images (MRI) of pelvic floor disorders in a scanner- and software independent manner. The proposed 3D coordinate system called 3D Pelvic Inclination Correction System (PICS) is constructed utilizing four bony landmark points, with the origin set at the inferior pubic point, and three additional points at the sacrum (sacrococcygeal joint) and both ischial spines, which are clearly visible on MRI images. The feasibility and applicability of the moving frame was evaluated using MRI datasets from five women with pelvic organ prolapse, three undergoing static MRI and two undergoing dynamic MRI of the pelvic floor in...
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Lecture Notes in Computer Science, 2009
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The fundamental drawback of current stereo and multi-view display techniques is the necessity to ... more The fundamental drawback of current stereo and multi-view display techniques is the necessity to perform multi-pass rendering (one pass for each separate view) and subsequent image composition-and-masking for generating multi-stereo views. Thus the rendering time increases in general linearly with the number of rendered views. An increase in frame-rate can be achieved by sub-resolution rendering and extrapolation before display, at the expense of degraded image quality. To overcome these disadvantages, we introduce a new method for rendering volumes, points and triangles meshes on multi-view auto-stereoscopic displays. Our method exploits the programmability of modern graphic processing units (GPUs) for rendering multi-stereo views in a single rendering pass. The views are calculated directly on the GPU including sub-pixel wavelength selective views. We describe our algorithm precisely and provide details about its implementation. Experimental results demonstrate the performance adv...
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Proceedings of the 4th international conference on Computer graphics and interactive techniques in Australasia and Southeast Asia - GRAPHITE '06, 2006
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International Congress Series, 2004
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Papers by Thomas Winklehner