CT Scan in Seoul: A Guide for International Patients
Low-Dose CT Screening Explained
Modern screening CT uses a fraction of diagnostic-scan radiation while retaining the sensitivity to catch small lung nodules and quantify coronary calcium — the two highest-value CT screens.
Lung and Coronary CT Options
Low-dose chest CT is the standard for smokers and ex-smokers; coronary calcium CT converts heart-attack risk into a concrete score — see the cardiac page.
Radiation Safety Standards
Screening protocols are dose-optimized and logged; if you screen annually, raise cumulative exposure with the physician — it's a legitimate planning question, not an awkward one.
Common Questions
How much radiation is a low-dose CT?
Roughly comparable to months of natural background exposure — far below diagnostic CT levels; exact figures depend on protocol.
Who should get lung CT screening?
Primarily current and former smokers over 50, and others per physician discussion.
Is CT better than MRI?
Different tools: CT excels at lung and calcium screening; MRI at brain and soft tissue — packages combine them accordingly.
How fast is the scan itself?
Seconds to minutes — the scan is the shortest part of your day.