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Journal of Digital Imaging

, Volume 24, Issue 4, pp 609–625 | Cite as

A Fast and Fully Automatic Method for Cerebrovascular Segmentation on Time-of-Flight (TOF) MRA Image

  • Xin Gao
  • Yoshikazu Uchiyama
  • Xiangrong Zhou
  • Takeshi Hara
  • Takahiko Asano
  • Hiroshi Fujita
Article

Abstract

The precise three-dimensional (3-D) segmentation of cerebral vessels from magnetic resonance angiography (MRA) images is essential for the detection of cerebrovascular diseases (e.g., occlusion, aneurysm). The complex 3-D structure of cerebral vessels and the low contrast of thin vessels in MRA images make precise segmentation difficult. We present a fast, fully automatic segmentation algorithm based on statistical model analysis and improved curve evolution for extracting the 3-D cerebral vessels from a time-of-flight (TOF) MRA dataset. Cerebral vessels and other tissue (brain tissue, CSF, and bone) in TOF MRA dataset are modeled by Gaussian distribution and combination of Rayleigh with several Gaussian distributions separately. The region distribution combined with gradient information is used in edge-strength of curve evolution as one novel mode. This edge-strength function is able to determine the boundary of thin vessels with low contrast around brain tissue accurately and robustly. Moreover, a fast level set method is developed to implement the curve evolution to assure high efficiency of the cerebrovascular segmentation. Quantitative comparisons with 10 sets of manual segmentation results showed that the average volume sensitivity, the average branch sensitivity, and average mean absolute distance error are 93.6%, 95.98%, and 0.333 mm, respectively. By applying the algorithm to 200 clinical datasets from three hospitals, it is demonstrated that the proposed algorithm can provide good quality segmentation capable of extracting a vessel with a one-voxel diameter in less than 2 min. Its accuracy and speed make this novel algorithm more suitable for a clinical computer-aided diagnosis system.

Key words

Magnetic resonance angiography (MRA) time-of-flight (TOF) cerebrovascular segmentation statistical model analysis fast curve evolution 

Notes

Acknowledgment

This work was supported in part by a grant for the “Knowledge Cluster Creation Project” from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Copyright information

© Society for Imaging Informatics in Medicine 2010

Authors and Affiliations

  • Xin Gao
    • 1
    • 3
  • Yoshikazu Uchiyama
    • 1
  • Xiangrong Zhou
    • 1
  • Takeshi Hara
    • 1
  • Takahiko Asano
    • 2
  • Hiroshi Fujita
    • 1
  1. 1.Department of Intelligent Image Information, Graduate School of MedicineGifu UniversityGifuJapan
  2. 2.Department of RadiologyGifu University HospitalGifuJapan
  3. 3.Suzhou Institute of Biomedical Engineering and TechnologyChinese Academy of SciencesSuzhouChina

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