Comparison of direct machine parameter optimization versus fluence optimization with sequential sequencing in IMRT of hypopharyngeal carcinoma

Table 2 Comparison of plan compliance to the DVO

Mean values and standard deviations of the dose differences (in Gy) between DVO and corresponding DVH points for the plans optimized with IM and DSS for all patients. Positive values are used for DVH points which violate the DVO. For DVH points which fulfill the DVO, the difference values are set to 0. Significant differences between the IM and the DSS optimized plans can be observed for the PTV and external contour (p-value < 0.05). For the parotids and the spinal cord no significant differences can be observed for the two optimization strategies.

ISSN: 1748-717X