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Dose distribution in patients included in this study. The lung and target doses are demonstrated on (A) coronal and (B) sagittal sections with 2-field radiotherapy. The lung doses increased as a result of additional lymphatic fields, as demonstrated on (C) coronal and (D) sagittal sections with 4-field radiotherapy.
LL=lung length; CLD=central lung depth; MLD=maximum lung depth.
