GPU-based Multi-Volume Rendering of Complex Data in Neuroscience and Neurosurgery

Johanna Beyer
GPU-based Multi-Volume Rendering of Complex Data in Neuroscience and Neurosurgery
Supervisor: Markus Hadwiger, Katja Bühler, Meister Eduard Gröller
Duration: -2009
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Information

Abstract

Recent advances in image acquisition technology and its availability in the medical and bio-medical fields have lead to an unprecedented amount of high-resolution imaging data. However, the inherent complexity of this data, caused by its tremendous size, complex structure or multi-modality poses several challenges for current visualization tools. Recent developments in graphics hardware architecture have increased the versatility and processing power of today’s GPUs to the point where GPUs can be considered parallel scientific computing devices. The work in this thesis builds on the current progress in image acquisition techniques and graphics hardware architecture to develop novel 3D visualization methods for the fields of neurosurgery and neuroscience. The first part of this thesis presents an application and framework for planning of neurosurgical interventions. Concurrent GPU-based multi-volume rendering is used to visualize multiple radiological imaging modalities, delineating the patient’s anatomy, neurological function, and metabolic processes. Additionally, novel interaction metaphors are introduced, allowing the surgeon to plan and simulate the surgial approach to the brain based on the individual patient anatomy. The second part of this thesis focuses on GPU-based volume rendering techniques for large and complex EM data, as required in the field of neuroscience. A new mixed-resolution volume ray-casting approach is presented, which circumvents artifacts at block boundaries of different resolutions. NeuroTrace is introduced, an application for interactive segmentation and visualization of neural processes in EM data. EM data is extremely dense, heavily textured and exhibits a complex structure of interconnected nerve cells, making it difficult to achieve high-quality volume renderings. Therefore, this thesis presents a novel on-demand nonlinear noise removal and edge detection method which allows to enhance important structures (e.g., myelinated axons) while de-emphasizing less important regions of the data. In addition to the methods and concepts described above, this thesis tries to bridge the gap between state-of-the-art visualization research and the use of those visualization methods in actual medical and bio-medical applications.

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BibTeX

@phdthesis{beyer-2009-gpu,
  title =      "GPU-based Multi-Volume Rendering of Complex Data in
               Neuroscience and Neurosurgery",
  author =     "Johanna Beyer",
  year =       "2009",
  abstract =   "Recent advances in image acquisition technology and its
               availability in the medical and bio-medical fields have lead
               to an unprecedented amount of high-resolution imaging data.
               However, the inherent complexity of this data, caused by its
               tremendous size, complex structure or multi-modality poses
               several challenges for current visualization tools. Recent
               developments in graphics hardware architecture have
               increased the versatility and processing power of today’s
               GPUs to the point where GPUs can be considered parallel
               scientific computing devices. The work in this thesis builds
               on the current progress in image acquisition techniques and
               graphics hardware architecture to develop novel 3D
               visualization methods for the fields of neurosurgery and
               neuroscience. The first part of this thesis presents an
               application and framework for planning of neurosurgical
               interventions. Concurrent GPU-based multi-volume rendering
               is used to visualize multiple radiological imaging
               modalities, delineating the patient’s anatomy,
               neurological function, and metabolic processes.
               Additionally, novel interaction metaphors are introduced,
               allowing the surgeon to plan and simulate the surgial
               approach to the brain based on the individual patient
               anatomy. The second part of this thesis focuses on GPU-based
               volume rendering techniques for large and complex EM data,
               as required in the field of neuroscience. A new
               mixed-resolution volume ray-casting approach is presented,
               which circumvents artifacts at block boundaries of different
               resolutions. NeuroTrace is introduced, an application for
               interactive segmentation and visualization of neural
               processes in EM data. EM data is extremely dense, heavily
               textured and exhibits a complex structure of interconnected
               nerve cells, making it difficult to achieve high-quality
               volume renderings. Therefore, this thesis presents a novel
               on-demand nonlinear noise removal and edge detection method
               which allows to enhance important structures (e.g.,
               myelinated axons) while de-emphasizing less important
               regions of the data. In addition to the methods and concepts
               described above, this thesis tries to bridge the gap between
               state-of-the-art visualization research and the use of those
               visualization methods in actual medical and bio-medical
               applications.",
  month =      oct,
  address =    "Favoritenstrasse 9-11/186, A-1040 Vienna, Austria",
  school =     "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2009/beyer-2009-gpu/",
}