Assessment and comparison of radiation dose and image quality in multi-detector CT scanners in non-contrast head and neck examinations.

Pol J Radiol · 2019 · PMC6479057 · PMID 31019596

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an increasing trendno p-value reported

Conclusions The results clearly indicate an increasing trend in the Q-factor from 4-MDCT to 64-MDCT units in both head and neck examinations.

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a decreasing trendno p-value reported

The calculated nCTDIwvalues indicate a decreasing trend from 4-MDCT to 64-MDCT in both head and neck examinations ( Figure 2 ).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.