At the time the case was submitted for publication Frank Gaillard had the following disclosures:
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Frank Gaillard's current disclosures
The equation for the calculation of Hounsfield unit used in CT scans is sometimes written with a second term in the denominator for the attenuation of air. As this value is essentially zero it can be ignored.
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