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. Author manuscript; available in PMC: 2017 Jul 18.
Published in final edited form as: AJR Am J Roentgenol. 2014 Dec;203(6):W623–W628. doi: 10.2214/AJR.13.12369

Figure 5.

Figure 5

Correlation between colonic distention by position and patient BMI.

Graphs depicting decubitus (A) and supine (B) gas volume as a percentage difference compared with the prone volume, plotted against BMI. Values above zero indicate a higher volume than the prone scan. As BMI increases, the degree of improvement in decubitus and supine distention increases further. Correlations are 0.280 (p<0.001) and 0.213 (p<0.001), respectively. The straight lines represent the least squares fit and the wavy lines apply a local smoother. In general, the percentage increase in distention is greater in the decubitus position at all BMI values.