Int J Comput Assist Radiol Surg - Automatic recognition of major fissures in human lungs.

Tópicos

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Resumo

RPOSE: The major hurdle for three-dimensional display of lung lobes is the automatic recognition of lobar fissures, boundaries of lung lobes. Lobar fissures are difficult to recognize due to their variable shape and appearance, along with the low contrast and high noise inherent in computed tomographic (CT) images. An algorithm for recognizing the major fissures in human lungs was developed and tested.METHODS: The algorithm employs texture analysis and fissure appearance to mimic the way that surgeons/radiologists read CT images in clinical settings. The algorithm uses 3 stages to automatically find the major fissures in human lungs: (a) texture analysis, (b) fissure region analysis, and (c) fissure identification.RESULTS: The algorithm's feasibility was evaluated using isotropic CT images from 16 anonymous patients with varying pathologies. Compared with manual segmentation, the algorithm yielded mean distances of 1.92 ? 2.07 and 2.07 ? 2.37 mm, for recognizing the left and right major fissures, respectively.CONCLUSIONS: An automatic recognition algorithm for major fissures in human lungs is feasible, providing a foundation for the future development of a complete segmentation algorithm for lung lobes.

Resumo Limpo

rpose major hurdl threedimension display lung lobe automat recognit lobar fissur boundari lung lobe lobar fissur difficult recogn due variabl shape appear along low contrast high nois inher comput tomograph ct imag algorithm recogn major fissur human lung develop testedmethod algorithm employ textur analysi fissur appear mimic way surgeonsradiologist read ct imag clinic set algorithm use stage automat find major fissur human lung textur analysi b fissur region analysi c fissur identificationresult algorithm feasibl evalu use isotrop ct imag anonym patient vari patholog compar manual segment algorithm yield mean distanc mm recogn left right major fissur respectivelyconclus automat recognit algorithm major fissur human lung feasibl provid foundat futur develop complet segment algorithm lung lobe

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