Outlining the prostate boundary using the harmonics method (original) (raw)

Abstract

In a computerised ultrasound image guidance for automated prostatectomy system, it is necessary to identify a smooth, continuous contour for the prostate (boundary) from the ultrasound image. The radial bas-relief (RBR) method, which has been reported previously, can extract a skeletonised image from an ultrasound image automatically. After this process the prostate boundary is clearly revealed. However, analysis of the image is far from complete, as there are many spurious branches that create too much ambiguity for the system to define the actual boundary. There are also sections missing from the prostate boundary. Therefore further post-processing is required to describe and define the prostate boundary. In the paper, the harmonics method is used to describe the prostate boundary. The harmonics method uses Fourier information for noise removal and encodes a smooth boundary. The results of using the harmonics method after application of the RBR method on ultrasound images are presented. Factors that affect the performance are also highlighted and discussed.

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Authors and Affiliations

1. School of Applied Science, Nanyang Technological University, 639798, Singapore
   C. K. Kwoh
2. School of Mechanical & Production Engineering, Nanyang Technological University, 639798, Singapore
   M. Y. Teo, W. S. Ng, S. N. Tan & L. M. Jones

Authors

1. C. K. Kwoh
2. M. Y. Teo
3. W. S. Ng
4. S. N. Tan
5. L. M. Jones

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Correspondence to C. K. Kwoh.

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Kwoh, C.K., Teo, M.Y., Ng, W.S. et al. Outlining the prostate boundary using the harmonics method.Med. Biol. Eng. Comput. 36, 768–771 (1998). https://doi.org/10.1007/BF02518882

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• Received: 03 December 1997
• Accepted: 07 April 1998
• Issue date: November 1998
• DOI: https://doi.org/10.1007/BF02518882

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