Research Article

[Retracted] Research Value of Intensity Modulated Radiation Therapy in Alleviating Parotid Gland Function Injury in Patients with Stage N0 Nasopharyngeal Carcinoma from Physical and Dosimetric Aspects

Table 4

Comparison of parotid gland function injury after radiotherapy.

ClassificationAt the end of radiotherapy12 months after radiotherapy
3D-CRT ()IMRT ()3D-CRT ()IMRT ()

I18 (51.4)30 (71.4)25 (71.4)39 (92.9)
II8 (22.9)5 (11.9)8 (22.9)2 (4.8)
III5 (14.3)5 (11.9)2 (5.7)1 (2.4)
IV4 (11.4)2 (4.8)0 (0.0)0 (0.0)
V0 (0.0)0 (0.0)0 (0.0)0 (0.0)
χ23.75436.4122
P0.28930.0405