Fig. 6From: Intracolic ultrasound molecular imaging: a novel method for assessing colonic tumor necrosis factor-α expression in inflammatory bowel diseaseCorrelation analysis between targeted TNF-α ultrasound signal normalized intensity difference (NID) and mTNF-α expression in the colons of both IBD and normal mice. The NID and mTNF-α expression had a linear correlation with a coefficient of determination of R2 = 0.8267 at the mRNA level (A, P < 0.001, n = 17) and R2 = 0.7395 at the protein level (B, P < 0.001, n = 18)Back to article page