A study of computer aided visualization and quantification of emphysema

K. L. Tan, T. Tanaka, H. Nakamura, T. Shirahata, H. Sugiura

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Emphysema is a lung disease that occurs as more and more of the walls between air sacs in the lungs get destroyed. Computed tomography (CT) image of the human thorax has been a useful modality for assessing emphysema. Out goal in this paper is to automatically visualize bullaes (continuous low-attenuated region in CT which represents the air-filled region in the CT and therefore the emphysematous lesion in the lung) in the lungs in three dimensions and quantify the emphysema severity of each bullae based on its size and the distance of the bullae from the center of the lungs using fuzzy logic. From the computed emphysema severity score of bullae in the lung, we calculate the overall emphysema severity of the lung by summing up the emphysema severity score of all bullaes in the lung. For the visualization part, we first compute a transparent three-dimensional lung model and from there, we cluster the bullaes using K-means clustering method to see how the bullaes are distributed in groups in the lung. Besides, we compress the three-dimensional lung model along x-, y- and z-axis by assigning the value of every bullae pixel as one and adding up the pixel intensity along x-, y- and z-axis allowing the visualization of the compressed lung from the front, side, and top view, respectively. Consequently, we color the compressed image using continuous multi-valued color code for indicating the severity of the emphysematous destruction in the lung. Our visualization techniques can be used as a medical assistant visualization tool for radiologists.

本文言語English
ホスト出版物のタイトルWorld Congress on Medical Physics and Biomedical Engineering
ホスト出版物のサブタイトルImage Processing, Biosignal Processing, Modelling and Simulation, Biomechanics
出版社Springer Verlag
ページ852-855
ページ数4
4
ISBN(印刷版)9783642038815
DOI
出版ステータスPublished - 2009
イベントWorld Congress on Medical Physics and Biomedical Engineering: Image Processing, Biosignal Processing, Modelling and Simulation, Biomechanics - Munich, Germany
継続期間: 2009 9 72009 9 12

出版物シリーズ

名前IFMBE Proceedings
番号4
25
ISSN(印刷版)1680-0737

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering: Image Processing, Biosignal Processing, Modelling and Simulation, Biomechanics
国/地域Germany
CityMunich
Period09/9/709/9/12

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 生体医工学

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