title: Automatic lung segmentation from thoracic computed tomography scans using a hybrid approach with error detection.
abstract: Lung segmentation is a prerequisite for automated analysis of chest CT scans. Conventional lung segmentation methods rely on large attenuation differences between lung parenchyma and surrounding tissue. These methods fail in scans where dense abnormalities are present, which often occurs in clinical data. Some methods to handle these situations have been proposed, but they are too time consuming or too specialized to be used in clinical practice. In this article, a new hybrid lung segmentation method is presented that automatically detects failures of a conventional algorithm and, when needed, resorts to a more complex algorithm, which is expected to produce better results in abnormal cases. In a large quantitative evaluation on a database of 150 scans from different sources, the hybrid method is shown to perform substantially better than a conventional approach at a relatively low increase in computational cost.
authors: Image Sciences Institute, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands. eva@isi.uu.nl
authors: Eva M
authors: EM
authors: van Rikxoort
authors: Bartjan
authors: B
authors: de Hoop
authors: Max A
authors: MA
authors: Viergever
authors: Mathias
authors: M
authors: Prokop
authors: Bram
authors: B
authors: van Ginneken
mesh_terms: D000465:Algorithms; D001331:Automation; D016208:Databases, Factual; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D013902:Radiography, Thoracic / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*