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The exact geometric magnification of X-rays is generally not known, however, leaving mainly two the options:*If a previous CT has been made, adjust the sizes from a fixed reference point such as the width of a lumbar vertebra:<br>Actual width = Width in X-ray / (Width of vertebra on X-ray) x (Width of same vertebra on CT)
*Reporting a "roughly estimated" diameter by dividing the measured intestinal diameter in the image and dividing it by a rather arbitrary factor of 1.2. However, this confers a false impression of certainty.
*Reporting a qualitative diameter of the intestine, which may be on a mild-moderate-severe scale. However, the measured diameter still needs to be adjusted for geometric magnification in order to be compared to numbers in the table at right.
