• November 2018~. Assistant professor. School of mathematical sciences, Tongji University, Shanghai, China.

• October 2015~September 2018. Postdoc. Institute of natural sciences. Shanghai Jiao Tong University, Shanghai, China.

• March 2015~August 2015. Postdoc. Department of computational science and engineering, Yonsei University, Seoul, Korea.

(To Be) Published Papers (* stands for "corresponding author")

• Jian-Feng Cai,Jae Kyu Choi(*), Ke Wei(*), Data Driven Tight Frame forCompressed Sensing MRI Reconstruction viaOff-the-GridRegularization, Accepted by SIAM J. Imaging Sci.http://arxiv.org/abs/1911.03150

• Jae Kyu Choi,Bin Dong(*), Xiaoqun Zhang. An Edge Driven Wavelet Frame Model for Image Restoration. Appl. Comp. Harmonic Anal. 2020.

• Chang Min Hyun, Kang Cheol Kim, Hyun Cheol Cho,Jae Kyu Choi(*), Jin Keun Seo, Framelet Pooling Aided Deep Learning Network : The Method to Process High Dimensional Medical Data, Accepted by Machine Learning: Science and Technology, 2020.

• Didi Lv, Qingping Zhou,Jae Kyu Choi, Jinglai Li, Xiaoqun Zhang(*), Nonlocal TV-Gaussian Prior for Bayeian Inverse Problems with Application to Limited CT Reconstruction, Inverse Probl. Imaging, 2020.

• Hyoung Suk Park, Jineon Baek, Sun Kyoung You,Jae Kyu Choi, Jin Keun Seo, Unpaired Image Denoising Using a Generative Adversarial Network in X-ray CT, IEEE Access. 2019.

• Chenglong Bao,Jae Kyu Choi(*), Bin Dong. Whole Brain Susceptibility Mapping Using

  Harmonic Incompatibility Removal. SIAM J. Imaging Sci. 2019.

• Jae Kyu Choi,Chenglong Bao(*), Xiaoqun Zhang(*) PET-MRI Joint Reconstruction by Joint Sparsity Based Tight Frame Regularization. SIAM J. Imaging Sci. 2018.

• Hyoung Suk Park,Jae Kyu Choi,Jin Keun Seo. Characterization of Metal Artifacts in X-ray Computed Tomography. Comm. Pure. Appl. Math. 2017.

• Jae Kyu Choi,Bin Dong, Xiaoqun Zhang(*) Limited Tomography Reconstruction via Tight Frame and Simulataneous Sinogram Extrapolation. J. Comp. Math. 2016.

• Jae Kyu Choi, Hyoung Suk Park, Shuai Wang, Yi Wang, Jin Keun Seo(*) Inverse Problem in Quantitative Susceptibility Mapping. SIAM J. Imaging Sci. 2014.

• Hyoung Suk Park,Jae Kyu Choi, Kyung-Ran Park, Kyung Sang Kim, Sang-Hwy Lee, Jong Chul Ye, Jin Keun Seo(*) Metal Artifact Reduction in CT by Identifying Missing Data Hidden in Metals. J. X-ray. Sci. Tech. 2013.

Preprints(*stands for "corresponding author")

• Chenglong Bao, Jian-Feng Cai,Jae Kyu Choi(*), Bin Dong, Ke Wei, Improved Harmonic Incompatibility Removal for Susceptibility Mapping via Reduction of Basis Mismatch, Submitted to J. Comput. Math.

• January 2020~December 2022. PI. Harmonic incompatibility removal based quantitative susceptibility mapping reconstruction. NSFC Youth Grant.

• September 2017~September 2018. PI. Edge driven image restoration and application to medical image joint reconstruction. General Financial Grant from the China Postdoctoral Science Foundation.