Correction of inhomogeneous magnetic resonance images using multiscale retinex for segmentation accuracy improvement

Wen Hung Chao, Hsin Yi Lai, Yen Yu I Shih, You Yin Chen, Yu Chun Lo, Sheng Huang Lin, Siny Tsang, Robby Wu, Fu Shan Jaw

研究成果: 雜誌貢獻文章同行評審

9 引文 斯高帕斯(Scopus)

摘要

The purpose of this study was to improve the accuracy of tissue segmentation on brain magnetic resonance (MR) images preprocessed by multiscale retinex (MSR), segmented with a combined boosted decision tree (BDT) and MSR algorithm (hereinafter referred to as the MSRBDT algorithm). Simulated brain MR (SBMR) T1-weighted images of different noise levels and RF inhomogeneities were adopted to evaluate the outcome of the proposed method; the MSRBDT algorithm was used to identify the gray matter (GM), white matter (WM), and cerebral-spinal fluid (CSF) in the brain tissues. The accuracy rates of GM, WM, and CSF segmentation, with spatial features (G, x, y, r, θ), were respectively greater than 0.9805, 0.9817, and 0.9871. In addition, images segmented with the MSRBDT algorithm were better than those obtained with the expectation maximization (EM) algorithm; brain tissue segmentation in MR images was significantly more precise. The proposed MSRBDT algorithm could be beneficial in clinical image segmentation.
原文英語
頁(從 - 到)129-140
頁數12
期刊Biomedical Signal Processing and Control
7
發行號2
DOIs
出版狀態已發佈 - 三月 2012
對外發佈Yes

ASJC Scopus subject areas

  • Health Informatics
  • Signal Processing

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