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Unsupervised Discovery of Emphysema Subtypes in a Large Clinical Cohort

  • Polina BinderEmail author
  • Nematollah K. Batmanghelich
  • Raul San Jose Estepar
  • Polina Golland
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10019)

Abstract

Emphysema is one of the hallmarks of Chronic Obstructive Pulmonary Disorder (COPD), a devastating lung disease often caused by smoking. Emphysema appears on Computed Tomography (CT) scans as a variety of textures that correlate with disease subtypes. It has been shown that the disease subtypes and textures are linked to physiological indicators and prognosis, although neither is well characterized clinically. Most previous computational approaches to modeling emphysema imaging data have focused on supervised classification of lung textures in patches of CT scans. In this work, we describe a generative model that jointly captures heterogeneity of disease subtypes and of the patient population. We also describe a corresponding inference algorithm that simultaneously discovers disease subtypes and population structure in an unsupervised manner. This approach enables us to create image-based descriptors of emphysema beyond those that can be identified through manual labeling of currently defined phenotypes. By applying the resulting algorithm to a large data set, we identify groups of patients and disease subtypes that correlate with distinct physiological indicators.

Keywords

Feature Vector Compute Tomography Scan Force Vital Capacity Disease Subtype Physiological Indicator 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  • Polina Binder
    • 1
    Email author
  • Nematollah K. Batmanghelich
    • 2
  • Raul San Jose Estepar
    • 2
  • Polina Golland
    • 1
  1. 1.Computer Science and Artificial Intelligence Lab, EECSMITCambridgeUSA
  2. 2.Brigham and Womens HospitalHarvard Medical SchoolBostonUSA

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