PMID: 9650188Jul 3, 1998Paper

Identification of lung regions in chest radiographs using Markov random field modeling

Medical Physics
N F VittitoeC F Floyd

Abstract

The authors present an algorithm utilizing Markov random field modeling for identifying lung regions in a digitized chest radiograph (DCR). Let x represent the classifications of each pixel in a DCR as either lung or nonlung. We model x as a realization of a spatially varying Markov random field. This model is developed utilizing spatial and textural information extracted from samples of lung and nonlung region-types in a training set of DCRs. With this model, the technique of Iterated Conditional Modes is used to determine the optimal classification of each pixel in a DCR. The algorithm's ability to identify lung regions is evaluated on a testing set of DCRs. The algorithm performs well yielding a sensitivity of 90.7% +/- 4.4%, a specificity of 97.2% +/- 2.0%, and an accuracy of 94.8% +/- 1.6%. In an attempt to gain insight into the meaning and level of the algorithm's performance numbers, the results are compared to those of some easily implemented classification algorithms.

References

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Citations

Jul 17, 2004·Journal of Digital Imaging·Robert E Alvarez
Apr 24, 2012·Medical Engineering & Physics·Giuseppe CoppiniEzio Maria Ferdeghini
Aug 19, 2007·IEEE Transactions on Medical Imaging·Dieter SeghersPaul Suetens
Dec 16, 2006·IEEE Transactions on Medical Imaging·Paola CampadelliDiana Artioli
Sep 26, 2008·IEEE Transactions on Medical Imaging·Erik B Dam, Marco Loog
Apr 4, 2002·IEEE Transactions on Medical Imaging·Bram van GinnekenMax A Viergever
Jan 29, 2002·IEEE Transactions on Medical Imaging·B van GinnekenM A Viergever
Sep 29, 1999·Medical Physics·N F VittitoeC E Floyd
Dec 1, 2000·Medical Physics·B van Ginneken, B M ter Haar Romeny
Aug 24, 2018·Biomedical Engineering Online·Chunli QinZhijian Song
Feb 9, 2020·International Journal of Computer Assisted Radiology and Surgery·M KholiavchenkoB Ibragimov
Dec 2, 2018·International Journal of Biomedical Imaging·S K Chaya Devi, T Satya Savithri

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