Fig. 6From: Image quality of 4D in-treatment CBCT acquired during lung SBRT using FFF beam: a phantom studyScatter plots of the a mean CNR across the phases, b 0-phase CNR, and c 50-phase CNR against the monitor units. The CBCT image quality metrics were compared between the tube currents of 20 and 40 mA. The Pearson correlation coefficients and corresponding p-values are also presentedBack to article page