![]() Also, compared to plans with the sMLC, the plans with the mMLC showed advantages in dose coverage of the planning gross tumor volume (Pgtv) (CI 0.706 ± 0.056/HI 1.093 ± 0.021) and the planning target volume (PTV) (CI 0.707 ± 0.029/HI 1.315 ± 0.013) ( p < 0.05). The IMRT plans with the mMLC were more efficient (average MUs: 703.1 ± 68.3) than plans with the sMLC (average MUs: 833.4 ± 73.8) ( p < 0.05). The monitor unites (MUs) and dose volume histogram-based parameters were compared between the IMRT plans with sMLC and with mMLC. ![]() Methods and materialsġ0 patients with UTEC were retrospectively planned with the sMLC and the mMLC. To study the impacts of multileaf collimators (MLC) width in the intensity-modulated radiotherapy (IMRT) planning for the upper thoracic esophageal cancer (UTEC).
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