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Proceedings Paper

Bidirectional segmentation of prostate capsule from ultrasound volumes: an improved strategy
Author(s): Liyang Wei; Ramkrishnan Narayanan; Dinesh Kumar; Aaron Fenster; Albaha Barqawi; Priya Werahera; E. David Crawford; Jasjit S. Suri
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Paper Abstract

Prostate volume is an indirect indicator for several prostate diseases. Volume estimation is a desired requirement during prostate biopsy, therapy and clinical follow up. Image segmentation is thus necessary. Previously, discrete dynamic contour (DDC) was implemented in orthogonal unidirectional on the slice-by-slice basis for prostate boundary estimation. This suffered from the glitch that it needed stopping criteria during the propagation of segmentation procedure from slice-to-slice. To overcome this glitch, axial DDC was implemented and this suffered from the fact that central axis never remains fixed and wobbles during propagation of segmentation from slice-to-slice. The effect of this was a multi-fold reconstructed surface. This paper presents a bidirectional DDC approach, thereby removing the two glitches. Our bidirectional DDC protocol was tested on a clinical dataset on 28 3-D ultrasound image volumes acquired using side fire Philips transrectal ultrasound. We demonstrate the orthogonal bidirectional DDC strategy achieved the most accurate volume estimation compared with previously published orthogonal unidirectional DDC and axial DDC methods. Compared to the ground truth, we show that the mean volume estimation errors were: 18.48%, 9.21% and 7.82% for unidirectional, axial and bidirectional DDC methods, respectively. The segmentation architecture is implemented in Visual C++ in Windows environment.

Paper Details

Date Published: 19 March 2008
PDF: 7 pages
Proc. SPIE 6914, Medical Imaging 2008: Image Processing, 69143W (19 March 2008); doi: 10.1117/12.770569
Show Author Affiliations
Liyang Wei, Eigen LLC (United States)
Ramkrishnan Narayanan, Eigen LLC (United States)
Dinesh Kumar, Eigen LLC (United States)
Aaron Fenster, Imaging Research Labs. (Canada)
Albaha Barqawi, Univ. of Colorado Hospital (United States)
Priya Werahera, Univ. of Colorado Hospital (United States)
E. David Crawford, Univ. of Colorado Hospital (United States)
Jasjit S. Suri, Eigen LLC (United States)

Published in SPIE Proceedings Vol. 6914:
Medical Imaging 2008: Image Processing
Joseph M. Reinhardt; Josien P. W. Pluim, Editor(s)

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