Fig. 3.

A. Histogram of measured geometrical errors in the final frame cine MV images in the u-direction compared to the planned position. B. Correlation between field 1 and 2 geometrical errors. Pearson correlation coefficient shown in figure. C. Residual geometrical error at the setup MV image when applying the IMN match after initial couch correction. D. Geometrical errors originating from intrafraction chest wall movements derived as the difference between the setup MV error and the cine MV error.