Automatic Detection and Segmentation of Ground Glass Opacity Nodules

  • Jinghao Zhou
  • Sukmoon Chang
  • Dimitris N. Metaxas
  • Binsheng Zhao
  • Lawrence H. Schwartz
  • Michelle S. Ginsberg
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4190)


Ground Glass Opacity (GGO) is defined as hazy increased attenuation within a lung that is not associated with obscured underlying vessels. Since pure (nonsolid) or mixed (partially solid) GGO at the thin-section CT are more likely to be malignant than those with solid opacity, early detection and treatment of GGO can improve a prognosis of lung cancer. However, due to indistinct boundaries and inter- or intra-observer variation, consistent manual detection and segmentation of GGO have proved to be problematic. In this paper, we propose a novel method for automatic detection and segmentation of GGO from chest CT images. For GGO detection, we develop a classifier by boosting k-NN, whose distance measure is the Euclidean distance between the nonparametric density estimates of two examples. The detected GGO region is then automatically segmented by analyzing the texture likelihood map of the region. We applied our method to clinical chest CT volumes containing 10 GGO nodules. The proposed method detected all of the 10 nodules with only one false positive nodule. We also present the statistical validation of the proposed classifier for GGO detection as well as very promising results for automatic GGO segmentation. The proposed method provides a new powerful tool for automatic detection as well as accurate and reproducible segmentation of GGO.


Automatic Detection Ground Glass Opacity Nonparametric Density Estimate Standard Euclidean Distance False Positive Nodule 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Jinghao Zhou
    • 1
  • Sukmoon Chang
    • 1
    • 2
  • Dimitris N. Metaxas
    • 1
  • Binsheng Zhao
    • 3
  • Lawrence H. Schwartz
    • 3
  • Michelle S. Ginsberg
    • 3
  1. 1.CBIM, RutgersThe State University of New JerseyUSA
  2. 2.Computer Science, Capital CollegePenn State UniversityMiddletownUSA
  3. 3.Department of RadiologyMemorial Sloan-Kettering Cancer CenterUSA

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