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Segmentation of prostate boundaries from ultrasound images using statistical shape model

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3 Author(s)
Dinggang Shen ; Dept. of Radiol., Univ. of Pennsylvania, Philadelphia, PA, USA ; Yiqiang Zhan ; C. Davatzikos

Presents a statistical shape model for the automatic prostate segmentation in transrectal ultrasound images. A Gabor filter bank is first used to characterize the prostate boundaries in ultrasound images in both multiple scales and multiple orientations. The Gabor features are further reconstructed to be invariant to the rotation of the ultrasound probe and incorporated in the prostate model as image attributes for guiding the deformable segmentation. A hierarchical deformation strategy is then employed, in which the model adaptively focuses on the similarity of different Gabor features at different deformation stages using a multiresolution technique, i.e., coarse features first and fine features later. A number of successful experiments validate the algorithm.

Published in:

IEEE Transactions on Medical Imaging  (Volume:22 ,  Issue: 4 )