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South Korea's Medical Radiation Examinations Exceed 430 Million Annually, with CT Scans Accounting for 67.1% of Radiation Dose

According to the "2025 National Medical Radiation Assessment Yearbook" released by the Korea Disease Control and Prevention Agency on August 28, South Koreans underwent a total of 431.59 million medical radiation examinations last year, averaging 8.4 examinations per person. Over the past five years, the number of medical radiation examinations in South Korea has continued to rise, with last year's figure increasing by 4.6% year-on-year and 29.6% compared to 2021. The report shows that the collective radiation dose from medical radiation examinations in South Korea increased from 136,804.73 person-sieverts in 2021 to 167,659.18 person-sieverts last year, an increase of 22.6%. On a per capita basis, the radiation dose rose from 2.64 millisieverts to 3.24 millisieverts. The Korea Disease Control and Prevention Agency stated that with advances in medical technology, an aging population, and growing demand for health checkups, the use of medical radiation examinations in public healthcare services continues to expand.

2026-08-28

CT "5-Star" Image Quality Scoring May Help Reduce Radiation Dose

A multinational study involving the International Atomic Energy Agency and Massachusetts General Hospital in the United States shows that a standardized 5-star scoring system that considers both radiation dose and CT image quality can produce relatively consistent evaluations across different radiologists and help identify opportunities to reduce patient radiation exposure. This retrospective study included 2,737 adult CT examinations performed at 6 hospitals across 5 European countries, including 1,247 chest CTs and 1,490 abdominal CTs, involving 13 CT scanners. At each hospital, 3 radiologists independently evaluated the examinations using the 5-star framework. Unlike traditional image quality assessments that may favor lower noise...

2026-08-12