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Medical Image Synthesis with Context-Aware Generative Adversarial Networks

  • Dong Nie
  • Roger Trullo
  • Jun Lian
  • Caroline Petitjean
  • Su Ruan
  • Qian Wang
  • Dinggang ShenEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10435)

Abstract

Computed tomography (CT) is critical for various clinical applications, e.g., radiation treatment planning and also PET attenuation correction in MRI/PET scanner. However, CT exposes radiation during acquisition, which may cause side effects to patients. Compared to CT, magnetic resonance imaging (MRI) is much safer and does not involve radiations. Therefore, recently researchers are greatly motivated to estimate CT image from its corresponding MR image of the same subject for the case of radiation planning. In this paper, we propose a data-driven approach to address this challenging problem. Specifically, we train a fully convolutional network (FCN) to generate CT given the MR image. To better model the nonlinear mapping from MRI to CT and produce more realistic images, we propose to use the adversarial training strategy to train the FCN. Moreover, we propose an image-gradient-difference based loss function to alleviate the blurriness of the generated CT. We further apply Auto-Context Model (ACM) to implement a context-aware generative adversarial network. Experimental results show that our method is accurate and robust for predicting CT images from MR images, and also outperforms three state-of-the-art methods under comparison.

Keywords

Generative models GAN Image synthesis Deep learning Auto-context 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Dong Nie
    • 1
    • 2
  • Roger Trullo
    • 1
    • 3
  • Jun Lian
    • 4
  • Caroline Petitjean
    • 3
  • Su Ruan
    • 3
  • Qian Wang
    • 5
  • Dinggang Shen
    • 1
    Email author
  1. 1.Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillUSA
  2. 2.Department of Computer ScienceUniversity of North Carolina at Chapel HillChapel HillUSA
  3. 3.Normandie Univ, INSA Rouen, LITISRouenFrance
  4. 4.Department of Radiation OncologyUniversity of North Carolina at Chapel HillChapel HillUSA
  5. 5.School of Biomedical Engineering, Med-X Research InstituteShanghai Jiao Tong UniversityShanghaiChina

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