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Journal of Applied Sciences ›› 2012, Vol. 30 ›› Issue (1): 89-95.doi: 10.3969/j.issn.0255-8297.2012.01.014

• Signal and Information Processing • Previous Articles     Next Articles

Prostate Ultrasound Image Boundary Extraction Using Discrete Contour Point Set

YUAN Zong-liang1, WANG Yuan-yuan1, YU Jin-hua1, CHEN Ya-qing2   

  1. 1. Department of Electronic Engineering, Fudan University, Shanghai 200433, China
    2. Department of Ultrasound Diagnoses, Xinhua Hospital, Shanghai 200092, China
  • Received:2011-08-02 Revised:2011-09-13 Online:2012-02-09 Published:2012-01-30

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Abstract:

 A boundary extraction method based on the discrete contour point set (DCPS) is proposed for transrectal ultrasound (TRUS) prostate images. Several features of the prostate boundary are used to search candidate contour points, and a point set is picked up from them as the actual boundary by eliminating nonboundary
candidate points. A coarse prostate boundary is defined by the DCPS and adjusted in a small scale to get a closer prostate boundary using a curve evolution method with a fast level set. Results of experiments for a series of TRUS images show that the proposed method can effectively overcome problems of inhomogeneous intensity distributions inside and outside the prostate, and blur or missing edges, to extract an accurate and fully-formed boundary of the prostate.
Keywords:

Key words: ultrasound images, prostate, boundary extraction, discrete contour point set, curve evolution

CLC Number: