How do I reduce the dose in paediatric chest CT?
The recommended actions are: • Image quality in CT is generally more than what is required for confident diagnosis. Awareness on this can help in significant reduction in patient dose. • Radiologists and physicians should be aware that images with low noise, even if they do not look very crisp, may provide the diagnostic information. • mAs reduction at defined kVp has been used with success by many centres and is the most efficient method of dose management in children as also in adults. There is lack of consensus on kVp reduction in CT examination. • Many authors suggest using 100–200 mAs settings for high resolution chest CT in children. However, reliable diagnostic studies can be obtained using much lower mAs. In cooperative children who are able to breath-hold as low as 34 mAs can be used and in non-cooperative children 50 mAs [LUCAYA, J., et al., Low-dose high resolution CT of the chest in children and young adults: Dose, cooperation, artifact incidence and image quality, Am. J. R
