| 1884 | Establishment of the Kwang Hye Won |
| Nov. 08, 1895 | Discovery of X-ray by Prof. Roentgen |
| 1911 | First installation of x-ray equipment at the Chosun Government-General Clinic |
| 1921~1922 | Beginning of Radiotherapy with Prof. Motoharu Suzuki's accession to Korea |
| 1923 | Installation of the therapeutic x-ray generation device "Symmetry" at the Chosun Government-General Clinic |
| 1932 | Establishment of the Chosun Roentgen Association |
| Around Apr. 1940 | Establishment of an independent course in Radiology at the Medical Department of Kyoungseong University |
| Oct. 1945 | Inaugural Assembly of the Korean Radiological Society at the affiliated hospital of the Kyeongseong Medical College (1st Chairman: Mr. Buhyeon, Lee) |
| May 25, 1964 | Publication of the first radiology medical journal named "Journal of Korean Radiological Society" |
| Feb. 21, 1968 | Establishment of the Korean Association of X-ray Medical Examination |
| 1977 | First installation of CT at the Kyung Hee University Medical Center |
| Jun. 20, 1977 | The 1st Examination for the Assessment of Radiology Resident Training (location: Seoul National University Hospital, No. of Examinees: 96) |
| Apr. 24, 1978 | The 1st Educational Course of Diagnostic Radiology for clinicians other than radiologists(by the Department of Radiology, Seoul National University Hospital) |
| Oct. 15, 1978 | The 1st Refreshment Course for Board-certified Radiologists (location: International Conference Hall, Dongbang Building) |
| 1978 | First installation of Ultrasound machine at the Seoul National University Hospital |
| Jun. 1980 | Establishment of the Korean Society of Ultrasound in Medicine (1st Chairman: Prof. Joowan Kim) |
| Mar. 23, 1984 | Establishment of The Korean Radiology Medical Foundation |
| Sept. 21, 1987 | The 5th Congress of Asian Oceanian Congress of Radiology (AOCR) in Seoul |
| May 24, 1993 | The 1st Asia-Pacific Cardiovascular & Interventional Radiology Meeting |
| Oct. 1995 | The Scientific Congress in Commemoration of The 50th Anniversary of The Korean Radiological Society & 100th Anniversary of X-ray Discovery |
| Jan. 1995 | Construction of The Society Hall Publication of The 50-Year History of The Korean Radiological Society Enactment of The Regulation for Radiation Safety in Diagnostic Radiology Embarkment of The Scholarship and Fellowship Program of Korean Radiological Society |
| 2001 | Unify The Spring and Fall Scientific Congresses (only once a year) |
| 2004 | Renaming The Academy:from Department of Diagnostic Radiology to Department of Radiology (Society was Renamed to Korean Society of Radiology) Grand Prize Award from The Korean Academy of Medical Sciences Establishment of The Korean Institute for Accreditation of Medical Image |
| Oct. 2008 | The 12th Congress of AOCR |