Abstract

Online Feature Selection for Classifying Emphysema in HRCT Images

Highlights

  • THigh Resolution Computer Tomography is a valuable imaging modality for assessing diffuse lung diseases and in particular, emphysema

  • In the High Resolution Computer Tomography (HRCT) domain, the potential feature space is enormous and only a few features can be held in memory at any given time. We show that this is a natural fit for online feature selection (OFS) and is an approach that can outperform existing algorithms for emphysema classification

  • The aim of performance evaluation is to compare the level of effort expended between algorithm-based classification versus manual classification of the same job

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Summary

Introduction

THigh Resolution Computer Tomography is a valuable imaging modality for assessing diffuse lung diseases and in particular, emphysema. Quantitative image analysis, a useful extension of visual evaluation of the CT scans, is of great assistance for radiologists performing diagnosis. HRCT scans have high specificity for diagnosing emphysema and are the most accurate means of emphysema diagnosis in determining its type and extent. Visual evaluation by medical experts usually overestimates the percentage of damaged lung area. There is a need for an objective and accurate technique to detect and quantify emphysema that is useful to radiologists

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