Fig. 4
From: Semi-quantitative evaluation of signal intensity and contrast-enhancement in Modic changes
Scatter diagrams of NSIDIFF over NSIPRE: a control areas in other vertebra (OV) and b control areas in the vertebra (SV). Scatter diagrams of NSINORM.DIFF over NSIPRE: c control in OV, d control areas in SV. Filled dots MCs I, empty dots MCs I/II, filled triangles MCs II. MCs I pool on the left because their PRE values are mostly negative, while MCs II pool on the right, always being positive values. MCs I/II report NSIPRE values around zero, with values ranging between –19.9 and +16.7% for OV and between –18 and +30.1% for SV. DIFF mean difference between post and pre contrast signal intensity, MC Modic change, NORM.DIFF ratio between PRE and DIFF (×100), NSI normalised signal intensity, PRE mean pixels encompassed in the ROI