Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-042413-180125


Document Typethesis
Author NameXing, Baoyuan
URNetd-042413-180125
TitleImproved 3D Heart Segmentation Using Surface Parameterization for Volumetric Heart Data
DegreeMS
DepartmentElectrical & Computer Engineering
Advisors
  • Michael A. Gennert, Advisor
  • Matt Ward, Committee Member
  • Taskin Padir, Committee Member
  • Keywords
  • segmentation
  • surface parameterization
  • marching cube
  • triangulated mesh
  • MRI
  • Date of Presentation/Defense2013-04-25
    Availability unrestricted

    Abstract

    Imaging modalities such as CT, MRI, and SPECT have had a tremendous impact on diagnosis and treatment planning. These imaging techniques have given doctors the capability to visualize 3D anatomy structures of human body and soft tissues while being non-invasive. Unfortunately, the 3D images produced by these modalities often have boundaries between the organs and soft tissues that are difficult to delineate due to low signal to noise ratios and other factors. Image segmentation is employed as a method for differentiating Regions of Interest in these images by creating artificial contours or boundaries in the images. There are many different techniques for performing segmentation and automating these methods is an active area of research, but currently there are no generalized methods for automatic segmentation due to the complexity of the problem. Therefore hand-segmentation is still widely used in the medical community and is the “Gold standard” by which all other segmentation methods are measured. However, existing manual segmentation techniques have several drawbacks such as being time consuming, introduce slice interpolation errors when segmenting slice-by-slice, and are generally not reproducible. In this thesis, we present a novel semi-automated method for 3D hand-segmentation that uses mesh extraction and surface parameterization to project several 3D meshes to 2D plane . We hypothesize that allowing the user to better view the relationships between neighboring voxels will aid in delineating Regions of Interest resulting in reduced segmentation time, alleviating slice interpolation artifacts, and be more reproducible.

    Files
  • Thesis_Final.pdf

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