A learning based hierarchical framework for automatic prostate localization in CT images

Shu Liao, Dinggang Shen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

Accurate localization of prostate in CT images plays an important role in image guided radiation therapy. However, it has two main challenges. The first challenge is due to the low contrast in CT images. The other challenge is due to the uncertainty of the existence of bowel gas. In this paper, a learning based hierarchical framework is proposed to address these two challenges. The main contributions of the proposed framework lie in the following aspects: (1) Anatomical features are extracted from input images, and the most salient features at distinctive image regions are selected to localize the prostate. Regions with salient features but irrelevant to prostate localization are also filtered out. (2) An image similarity measure function is explicitly defined and learnt to enforce the consistency between the distance of the learnt features and the underlying prostate alignment. (3) An online learning mechanism is used to adaptively integrate both the inter-patient and patient-specific information to localize the prostate. Based on the learnt image similarity measure function, the planning image of the underlying patient is aligned to the new treatment image for segmentation. The proposed method is evaluated on 163 3D prostate CT images of 10 patients, and promising experimental results are obtained.

Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Pages1-9
Number of pages9
Volume6963 LNCS
DOIs
Publication statusPublished - 2011 Oct 11
Externally publishedYes
EventInternational Workshop on Prostate Cancer Imaging: Image Analysis and Image-Guided Interventions, Held in Conjunction with MICCAI 2011 - Toronto, ON, Canada
Duration: 2011 Sep 222011 Sep 22

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6963 LNCS
ISSN (Print)03029743
ISSN (Electronic)16113349

Other

OtherInternational Workshop on Prostate Cancer Imaging: Image Analysis and Image-Guided Interventions, Held in Conjunction with MICCAI 2011
CountryCanada
CityToronto, ON
Period11/9/2211/9/22

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

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  • Cite this

    Liao, S., & Shen, D. (2011). A learning based hierarchical framework for automatic prostate localization in CT images. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 6963 LNCS, pp. 1-9). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 6963 LNCS). https://doi.org/10.1007/978-3-642-23944-1_1