Fig. 7From: A method for in vivo treatment verification of IMRT and VMAT based on electronic portal imaging deviceTransmission through solid water of varying thickness along the in-axis (red), off-axis distance is 5 cm (blue) and off-axis distance is 10 cm (black). The dots correspond to the measured data and the lines to the corresponding fitted curves using the parameters in Table 2 by Eq. (13)Back to article page