Fig. 7From: Low-dose whole-spine imaging using slot-scan digital radiography: a phantom studyVisual evaluation results for each filter. When the filter thickness is 0.0 mm, no significant difference was observed between the different tube currents. For filter thicknesses of 0.1, 0.2, and 0.3 mm, significant differences were observed for tube currents of 125, 250, 320, and 400 mA (multiple comparison, Steel–Dwass method)Back to article page