A novel food-based negative oral contrast agent compared with two conventional oral contrast agents in abdominal CT: a three-arm parallel blinded randomised controlled single-centre trial

Table 3 Mean differences in HU between contrast filled bowel lumen and iodine-enhanced bowel wall (set to 80 HU as a standard)

Variable	Lumentin 44 (n = 17)	Omnipaque (n = 12)	MoviPrep (n = 14)	p-values^a
Variable	Lumentin 44 (n = 17)	Omnipaque (n = 12)	MoviPrep (n = 14)	L44 versus Omnipaque	L44 versus MoviPrep	Omnipaque versus MoviPrep
Duodenum ROI 1	486.3 (210.8	147.0 (291.3	48.1 (18.7	0.001	< 0.001	0.076
Duodenum ROI 2	414.6 ± 239.0	133.0 ± 293.4	43.0 ± 19.0	< 0.001	< 0.001	0.699
Jejunum ROI 1	490.3 ± 176.0	115.0 ± 88.6	57.5 ± 8.7	< 0.001	< 0.001	0.015
Jejunum ROI 2	496.0 ± 171.5	130.0 ± 104.6	61.6 ± 10.9	< 0.001	< 0.001	0.007
Proximal ileum ROI 1	582.0 ± 201.0	150.4 ± 120.5	66.9 ± 4.1	< 0.001	< 0.001	< 0.001
Proximal ileum ROI 2	580.0 ± 208.0	151.9 ± 124.6	67.3 ± 3.9	< 0.001	< 0.001	0.007
Distal ileum ROI 1	477.1 ± 313.3	118.8 ± 144.4	65.4 ± 4.7	< 0.004	0.002	> 0.999
Distal ileum ROI 2	398.8 ± 302.7	117.2 ± 130.6	64.2 ± 5.3	0.018	< 0.004	0.368
Terminal ileum, ROI	396.6 ± 326.6	66.9 ± 41.0	99.1 ± 131.2	0.018	0.007	0.898
Mean difference for all sites	484.0 ± 192.4	122.1 ± 81.4	64.5 ± 15.9	< 0.001	< 0.001	0.003

Data are given as mean ± standard deviation. HU Hounsfield units, ROI Region of Interest
^aWilcoxon rank sum test (2-sided)