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Barium swallow X-ray in bowel obstruction

65 bytes added, 16:01, 12 September 2018
→‎Evaluation: False impression of certainty
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The exact geometric magnification of X-rays is generally not known, however, leaving mainly two options:*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.
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