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Image of radiation modalities.
Notes: IMRT involved tangential sliding window continuous segmentation with inverse planning of an optimization structure derived from the target volume. Conventional 2D radiation usually had three fields, field A for supraclavicular lymph nodes, field B for medial side of chest wall, and field C for lateral side of chest wall.
Abbreviations: 2D, two-dimensional; IMRT, intensity-modulated radiotherapy.
