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Bone age estimation based on phalanx information with fuzzy constrain of carpals

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Abstract

The proposed automatic bone age estimation system was based on the phalanx geometric characteristics and carpals fuzzy information. The system could do automatic calibration by analyzing the geometric properties of hand images. Physiological and morphological features are extracted from medius image in segmentation stage. Back-propagation, radial basis function, and support vector machine neural networks were applied to classify the phalanx bone age. In addition, the proposed fuzzy bone age (BA) assessment was based on normalized bone area ratio of carpals. The result reveals that the carpal features can effectively reduce classification errors when age is less than 9 years old. Meanwhile, carpal features will become less influential to assess BA when children grow up to 10 years old. On the other hand, phalanx features become the significant parameters to depict the bone maturity from 10 years old to adult stage. Owing to these properties, the proposed novel BA assessment system combined the phalanxes and carpals assessment. Furthermore, the system adopted not only neural network classifiers but fuzzy bone age confinement and got a result nearly to be practical clinically.

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Authors and Affiliations

  1. Department of Electrical Engineering, National Tsing Hwa University, Hsinchu, Taiwan, ROC

    Chi-Wen Hsieh & Tai-Lang Jong

  2. Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC

    Chui-Mei Tiu

Authors
  1. Chi-Wen Hsieh
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  2. Tai-Lang Jong
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  3. Chui-Mei Tiu
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Correspondence to Chi-Wen Hsieh.

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Hsieh, CW., Jong, TL. & Tiu, CM. Bone age estimation based on phalanx information with fuzzy constrain of carpals. Med Bio Eng Comput 45, 283–295 (2007). https://doi.org/10.1007/s11517-006-0155-9

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  • DOI: https://doi.org/10.1007/s11517-006-0155-9

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