A 3D MODEL OF THE HUMAN LUNG WITH LUNG REGIONS CHARACTERIZAITON (TA-S1)

Author(s) : Tatjana Zrimec (University of New South Wales, Australia) Sata Busayarat (University of New South Wales, Australia) Peter Wilson (Pittwater Radiology, Australia)

Abstract : This paper presents a method for modelling human lungs using knowledge of lung anatomy and High Resolution CT images. The model consists of a symbolic description of lung anatomy and a 3D atlas. Symbolic, structural and geometric information in the model is stored in Frames structures. Frames provide a good platform for the comprehensive description of important anatomical features and for establishing communication between the image data and the symbolic knowledge. A few anatomical landmarks are determined and used for lung characterization as clinically meaningful regions. The results from the landmark segmentation, tested on 1685 images from 84 patient studies, show that the carina, hilum, spinal cord and sternum are quite stable features across patients. The use of anatomical landmarks and lung regions helps the system to deal with image and human variability.

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