Childhood CT scans can triple risk of brain cancer, leukemia

Just two CT (computed tomography) scans of the head in childhood can triple the risk of brain cancer in later life, and as few as five to 10 scans can triple the risk of leukaemia, a study has found. But an Australian expert says the risk posed by ionising radiation from the scans is well-documented, and that the study merely underscores the importance of using the technology only where strictly necessary from a clinical perspective. The findings by researchers from the University of Newcastle in England, reported in The Lancet today, were based on a study of almost 180,000 patients who had CT scans between 1985 and 2002 at 70% of hospitals in Britain.
Source: The Conversation Edu