Publications

2026

1. C

   FAST‑DIPS: Adjoint‑Free Analytic Steps and Hard‑Constrained Likelihood Correction for Diffusion‑Prior Inverse Problems

   Minwoo Kim, Seunghyeok Shin, and Hongki Lim

   to appear in International Conference on Learning Representations (ICLR) (2026)

   OpenReview
2. J

   CLARIFID: Improving radiology report generation by reinforcing clinically accurate impressions and enforcing detailed findings

   Kyeongkyu Lee, Seonghwan Yoon, and Hongki Lim

   Expert Systems with Applications (2026)

   arXiv Journal Code

2025

1. C

   Adaptive 3D Reconstruction via Diffusion Priors and Forward Curvature-Matching Likelihood Updates

   Seunghyeok Shin, Dabin Kim, and Hongki Lim

   Advances in Neural Information Processing Systems (NeurIPS) (2025)
   Spotlight Presentation [Top 3.55%]

   arXiv OpenReview Demo Code

2024

1. J

   Direct Conditional Score Modeling for Accelerated MRI Reconstruction

   Hongki Lim

   IEEE Access (2024)

   Journal

2023

1. J

   Transformer-Based Integrated Framework for Joint Reconstruction and Segmentation in Accelerated Knee MRI

   Hongki Lim

   Electronics (2023)

   Journal
2. J

   SPECT Reconstruction With a Trained Regularizer Using CT-Side Information: Application to ¹⁷⁷Lu SPECT Imaging

   Hongki Lim, Yuni K. Dewaraja, and Jeffrey A. Fessler

   IEEE Transactions on Computational Imaging (2023)

   Journal
3. J

   Momentum-Net: Fast and Convergent Iterative Neural Network for Inverse Problems

   Il Yong Chun, Zhengyu Huang, Hongki Lim, and 1 more author

   IEEE Transactions on Pattern Analysis and Machine Intelligence (2023)

   Journal

2020

1. J

   Improved Low-Count Quantitative PET Reconstruction With an Iterative Neural Network

   Hongki Lim, Il Yong Chun, Yuni K. Dewaraja, and 1 more author

   IEEE Transactions on Medical Imaging (2020)

   Journal
2. J

   A deep neural network for fast and accurate scatter estimation in quantitative SPECT/CT under challenging scatter conditions

   Haowei Xiang, Hongki Lim, Jeffrey A Fessler, and 1 more author

   European journal of nuclear medicine and molecular imaging (2020)

   Journal
3. C

   Joint low-count PET/CT segmentation and reconstruction with paired variational neural networks

   Hongki Lim, Yuni K Dewaraja, and Jeffrey A Fessler

   Medical Imaging 2020: Physics of Medical Imaging (2020)

2019

1. C

   SPECT/CT scatter estimation using a deep convolutional neural network: implementation in Y-90 imaging

   Haowei Xiang, Hongki Lim, Jeffrey A Fessler, and 1 more author

   2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) (2019)

2018

1. J

   A PET reconstruction formulation that enforces non-negativity in projection space for bias reduction in Y-90 imaging

   Hongki Lim, Yuni K Dewaraja, and Jeffrey A Fessler

   Physics in Medicine & Biology (2018)

   Journal
2. J

   Y-90 SPECT ML image reconstruction with a new model for tissue-dependent bremsstrahlung production using CT information: a proof-of-concept study

   Hongki Lim, Jeffrey A Fessler, Scott J Wilderman, and 2 more authors

   Physics in Medicine & Biology (2018)

   Journal
3. C

   Application of trained Deep BCD-Net to iterative low-count PET image reconstruction

   Hongki Lim, Zhengyu Huang, Jeffrey A Fessler, and 2 more authors

   2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC) (2018)
4. C

   On parameter selection for joint spectral reconstruction in Y90 SPECT

   Se Young Chun, Hongki Lim, Jeffrey A Fessler, and 1 more author

   2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC) (2018)
5. C

   Fast and convergent iterative image recovery using trained convolutional neural networks

   Il Yong Chun, Hongki Lim, Zhengyu Huang, and 1 more author

   2018 56th Annual Allerton Conference on Communication, Control, and Computing (Allerton) (2018)

2017

1. C

   Reducing bias in Y-90 PET images by enforcing non-negativity in projection space

   Hongki Lim, Yuni K Dewaraja, and Jeffrey A Fessler

   2017 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) (2017)