Meet Our Team
Meet Our Team
Get to know the dedicated researchers and staff at Pathfinder Lab.
Get to know the dedicated researchers
and staff at Pathfinder Lab.

Sung Hak Lee, M.D., Ph.D.
Sung Hak Lee, M.D., Ph.D.
Sung Hak Lee, M.D., Ph.D.
Professor
Professor
Professor
Research Focus: Gastrointestinal, Hepatobiliary
Research Focus: Gastrointestinal, Hepatobiliary
Research Focus: Gastrointestinal, Hepatobiliary
& Pancreas pathology, Digital pathology and AI
& Pancreas pathology, Digital pathology and AI
& Pancreas pathology, Digital pathology and AI
Ph.D. in 2013. Department of Medical Sciences, Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences, Graduate School, The Catholic University of Korea, Seoul, South Korea
M.D. in 2002. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.D. in 2002. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea



Sangjeong Ahn, M.D., Ph.D.
Sangjeong Ahn, M.D., Ph.D.
Sangjeong Ahn, M.D., Ph.D.
Associate Professor
Associate Professor
Associate Professor
Research Focus: Computational Pathology,
Research Focus: Computational Pathology,
Research Focus: Computational Pathology,
Gastric Cancer, Medical AI, Cancer Genomics
Gastric Cancer, Medical AI, Cancer Genomics
Gastric Cancer, Medical AI, Cancer Genomics
Ph.D. in 2013. Department of Medical Sciences, Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences, Graduate School, The Catholic University of Korea, Seoul, South Korea
M.D. in 2002. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.D. in 2002. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea

D.M. Bappy, Ph.D.
D.M. Bappy, Ph.D.
D.M. Bappy, Ph.D.
Research Professor (2024.6 - )
Research Professor (2024.6 - )
Research Professor (2024.6 - )
Research Focus: Computer Vision, Medical
Research Focus: Computer Vision, Medical
Research Focus: Computer Vision, Medical
Image Reconstruction, Medial Image Analysis
Image Reconstruction, Medial Image Analysis
Image Reconstruction, Medial Image Analysis
Ph.D. in 2017. Mechanical Engineering (Medical Image Processing), Chonnam National University, Gwangju, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2017. Mechanical Engineering (Medical Image Processing), Chonnam National University, Gwangju, South Korea
M.S. in 2012. Electrical Engineering (Signal Processing), Blekinge Institute of Technology, Karlskrona, Sweden
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.S. in 2012. Electrical Engineering (Signal Processing), Blekinge Institute of Technology, Karlskrona, Sweden
B.S. in 2007. Electrical and Engineering, American International University-Bangladesh, Dhaka, Bangladesh
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
B.S. in 2007. Electrical and Engineering, American International University-Bangladesh, Dhaka, Bangladesh

Kwangil Yim, M.D., Ph.D.
Kwangil Yim, M.D., Ph.D.
Kwangil Yim, M.D., Ph.D.
Visiting Scholar (2024. 8 - )
Visiting Scholar (2024. 8 - )
Visiting Scholar (2024. 8 - )
Research Focus: Gastrointestinal, Pathology,
Research Focus: Gastrointestinal, Pathology,
Research Focus: Gastrointestinal, Pathology,
Deep learning, Spatial transcriptome
Deep learning, Spatial transcriptome
Deep learning, Spatial transcriptome
Ph.D. in 2021. Department of Medicine, Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
Ph.D. in 2021. Department of Medicine, Graduate School, The Catholic University of Korea, Seoul, South Korea
M.D. in 2007. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
M.D. in 2007. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea

Moonyoung Lee, M.S.
Moonyoung Lee, M.S.
Moonyoung Lee, M.S.
Research Associate (2024.9 - )
Research Associate (2024.9 - )
Research Associate (2024.9 - )
Research Focus: Cancer Genomics, scRNA-seq,
Research Focus: Cancer Genomics, scRNA-seq,
Research Focus: Cancer Genomics, scRNA-seq,
Spatial Transcriptomics, Multi-omics
Spatial Transcriptomics, Multi-omics
Spatial Transcriptomics, Multi-omics
M.S. in 2024. Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
M.S. in 2024. Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
B.S. in 2022. Department of Statistics, Sookmyung Women's University, Seoul, South Korea
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
B.S. in 2022. Department of Statistics, Sookmyung Women's University, Seoul, South Korea

Minsu Kim, B.S.
Minsu Kim, B.S.
Minsu Kim, B.S.
Research Administrator (2023.8 - )
Research Administrator (2023.8 - )
Research Administrator (2023.8 - )
Research FocusNursing, Administrative Affairs
Research FocusNursing, Administrative Affairs
Research FocusNursing, Administrative Affairs
M.S. in 2025 (Expected). Department of Epidemiology and Clinical Trial, The Catholic University of Korea, Graduate School of Public Health and Healthcare Management, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
M.S. in 2025 (Expected). Department of Epidemiology and Clinical Trial, The Catholic University of Korea, Graduate School of Public Health and Healthcare Management, Seoul, South Korea
B.S. in 2019. Doowon Technical University, Ansung, South Korea
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
B.S. in 2019. Doowon Technical University, Ansung, South Korea

Sumin Lee, B.S.
Sumin Lee, B.S.
Research Administrator (2023.8 - )
Research Administrator (2023.8 - )
Research Administrator (2023.8 - )
Research FocusNursing, Administrative Affairs
Research FocusNursing, Administrative Affairs
Research FocusNursing, Administrative Affairs
B.S. in 2020. School of Nurisng, Chonnam National University, Gwangju, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
B.S. in 2020. School of Nurisng, Chonnam National University, Gwangju, South Korea

Ye Sul Jeong, M.D.
Ye Sul Jeong, M.D.
Ye Sul Jeong, M.D.
Ph.D. Student (2022.3 - )
Ph.D. Student (2022.3 - )
Ph.D. Student (2022.3 - )
Research Focus: Obstetric and Gynecologic Pathology, Molecular Pathology, Digital pathology and AI
Research Focus: Obstetric and Gynecologic Pathology, Molecular Pathology, Digital pathology and AI
Research Focus: Obstetric and Gynecologic Pathology, Molecular Pathology, Digital pathology and AI
M.D. in 2013. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
M.D. in 2013. Department of Medicine, The Catholic University of Korea, College of Medicine, Seoul, South Korea

Harim Oh, M.D., M.S.
Harim Oh, M.D., M.S.
Ph.D. Student (2024.9 - )
Ph.D. Student (2024.9 - )
Ph.D. Student (2024.9 - )
Research Focus: Breast, Gynecology
Research Focus: Breast, Gynecology
Research Focus: Breast, Gynecology
M.S. in 2019. Department of Medicine, Korea University College of Medicine, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
M.S. in 2019. Department of Medicine, Korea University College of Medicine, Seoul, South Korea
M.D. 2016 Department of Medicine, Korea University College of Medicine, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
M.D. 2016 Department of Medicine, Korea University College of Medicine, Seoul, South Korea

Harim Chun, M.S.
Harim Chun, M.S.
Harim Chun, M.S.
Research Associate (2024.9 - 2025.2) / Ph.D. Student (2025.3 - )
Research Associate (2024.9 - 2025.2) / Ph.D. Student (2025.3 - )
Research Associate (2024.9 - 2025.2) / Ph.D. Student (2025.3 - )
Research Focus: Cancer Genomics, scRNA-seq, Spatial
Research Focus: Cancer Genomics, scRNA-seq, Spatial
Research Focus: Cancer Genomics, scRNA-seq, Spatial
Transcriptomics, Multi-omics
Transcriptomics, Multi-omics
Transcriptomics, Multi-omics
M.S. in 2024. Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
M.S. in 2024. Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
B.S. in 2021. School of Systems Biomedical Science, Soongsil University, Seoul, South Korea
M.D. in 2002. Department of Medicine,
The Catholic University of Korea, College of Medicine, Seoul, South Korea
B.S. in 2021. School of Systems Biomedical Science, Soongsil University, Seoul, South Korea

Eunsoo Kim, B.S.
Eunsoo Kim, B.S.
Eunsoo Kim, B.S.
Research Assistant (2021.7 - 2024.8) / M.S. Student (2024.9 - )
Research Assistant (2021.7 - 2024.8) / M.S. Student (2024.9 - )
Research Assistant (2021.7 - 2024.8) / M.S. Student (2024.9 - )
Research Focus: Digital Pathology, Visualization, Medical Application
Research Focus: Digital Pathology, Visualization, Medical Application
Research Focus: Digital Pathology, Visualization, Medical Application
B.S. in 2018. Department of Mathematics , Yonsei University, Seoul, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
B.S. in 2018. Department of Mathematics , Yonsei University, Seoul, South Korea

Hyeseoung Lee, B.S.
Hyeseoung Lee, B.S.
Research Assistant (2021.7 - 2024.8) / M.S. Student (2024.9 - )
Research Assistant (2021.7 - 2024.8) / M.S. Student (2024.9 - )
Research Assistant (2021.7 - 2024.8) / M.S. Student (2024.9 - )
Research Focus: Computational Pathology, Diffusion Model, Optimal Annotation Strategy
Research Focus: Computational Pathology, Diffusion Model, Optimal Annotation Strategy
Research Focus: Computational Pathology, Diffusion Model, Optimal Annotation Strategy
B.S. in 2021. Microbiology and Information Statistics (Double Major), Chungbuk National University, Cheongju, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
B.S. in 2021. Microbiology and Information Statistics (Double Major), Chungbuk National University, Cheongju, South Korea

Youngsuk Lee, B.S.
Youngsuk Lee, B.S.
Youngsuk Lee, B.S.
M.S. Student (2024.9 - )
M.S. Student (2024.9 - )
M.S. Student (2024.9 - )
Research Focus: Computation Pathology, Vision Language Model (VLM)
Research Focus: Computation Pathology, Vision Language Model (VLM)
Research Focus: Computation Pathology, Vision Language Model (VLM)
B.S. in 2020. Major of Refrigeration and Air Conditioning Engineering, Korea Maritime and Ocean University, Busan, South Korea
Ph.D. in 2013. Department of Medical Sciences,
Graduate School, The Catholic University of Korea, Seoul, South Korea
B.S. in 2020. Major of Refrigeration and Air Conditioning Engineering, Korea Maritime and Ocean University, Busan, South Korea
Alumni