Research Article

Lung Segmentation in 4D CT Volumes Based on Robust Active Shape Model Matching

Figure 1

RASM-based approaches for segmenting lungs in a 4D CT volume (represented by 3D volumes A and B). (a) 3D segmentation method [14]. (b) Registration based 4D segmentation method [19]. (c) Proposed 4D segmentation approach with new 4D RASM (Section 3.1).
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