CT Scan Use Rises as Misunderstanding of Medical Radiation Persists
Medical imaging exams such as CT scans and X-rays are increasingly common, but many people still misunderstand how medical radiation works. A recent national survey by South Korea’s National Health Insurance Service found widespread confusion about which tests expose patients to radiation.
Most adults claimed they were familiar with “medical radiation,” yet could not correctly identify which exams use it. About one in five respondents believed CT scans or X-rays do not involve radiation. At the same time, more than 70% incorrectly thought MRI scans use radiation, even though MRIs rely on strong magnetic fields and radio waves and do not expose patients to radiation.
CT scan use has increased sharply. About 11 million CT exams were performed nationwide in 2020. By 2024, the number had climbed to nearly 15 million, with patients exposed to much higher levels of radiation than before.
Experts say medical imaging is essential for diagnosis and treatment, but warn that unnecessary tests should be avoided. Repeated exposure to radiation may increase health risks, including a higher risk of cancer over time.
To raise public awareness, the government launched a mobile service that allows people to check their medical imaging history. Officials hope it will help patients better understand their exposure and encourage more careful use of medical tests.
J.K. Park Senior Reporter junior/1768815094/1613368089
1. What medical exams use radiation to help doctors diagnose patients?
2. How many CT exams were performed in Korea in 2024?
3. Why should patients avoid getting unnecessary medical radiation tests?
4. Who launched a mobile service to check medical histories?
1. Are you afraid of getting medical tests like X-rays?
2. Why is it important to understand how radiation works?
3. Should patients always check their own medical history carefully?
4. How can mobile technology help us learn about our health?
Medical imaging exams such as CT scans and X-rays are increasingly common, but many people still misunderstand how medical radiation works. A recent national survey by South Korea’s National Health Insurance Service found widespread confusion about which tests expose patients to radiation.
