| 2023 | Comparison of initial and sequential salvage brain-directed treatment in patients with 1–4 vs. 5–10 brain metastases from breast cancer (KROG 16–12) | 김규보; 정원근 | Article |
| 2023 | Development and Validation of a Normal Tissue Complication Probability Model for Lymphedema After Radiation Therapy in Breast Cancer | 김규보; 정원근 | Article |
| 2024 | Diagnostic assessments and treatment results of well-differentiated gastric-type adenocarcinoma of the uterine cervix (Adenoma malignum): A multicenter retrospective analysis of KROG 22-03 study | 정원근 | Article |
| 2018 | Displacement of surgical clips and changes of human acellular dermal matrix (ADM) in the excision cavity during whole breast irradiation following breast-conserving surgery | 정원근 | Doctoral Thesis |
| 2024 | Mid-treatment MRI-based tumor response assessment for tumor recurrence and patient survival in locally advanced adenocarcinoma of the cervix: A retrospective multicenter study of KROG 23-03 | 정원근 | Article |
| 2023 | Patterns of locoregional recurrences and suggestion of the clinical target volume in resected perihilar extrahepatic cholangiocarcinoma | 김규보; 박영희; 정원근 | Article |
| 2022 | Postmastectomy Radiation Therapy for Node-Negative Breast Cancer of 5 cm or Larger Tumors: A Multicenter Retrospective Analysis (KROG 20-03) | 김규보; 정원근 | Article |
| 2024 | Quantifying radiation-induced breast fibrosis by shear-wave elastography in patients with breast cancer: A 12-months-follow-up data of a prospective study | 정진; 이지혜; 정원근 | Article |
| 2026 | Survey Study on the Patterns of Practice for Pancreatic Cancer Radiation Therapy in Korea | 정원근 | Article |
| 2022 | The Pattern of Care for Brain Metastasis from Breast Cancer over the Past 10 Years in Korea: A Multicenter Retrospective Study (KROG 16-12) | 김규보; 정원근 | Article |
| 2026 | Treatment of cervical/vaginal intra-epithelial neoplasia with high-dose-rate brachytherapy: a multi-center retrospective analysis | 정원근 | Article |
| 2022 | Treatment Outcomes according to the EndoPredict Score in ER-Positive, HER2-Negative Early Breast Cancer | 문병인; 김규보; 정원근 | Article |
