Fig. 3
From: Adaptive radiotherapy in locally advanced esophageal cancer with atelectasis: a case report
a Initial radiotherapy plan: axial image of dose distribution (an isodose line of 100% indicates 2 Gy per fraction); b initial radiotherapy plan: irradiation field of gantry angle 0°; c initial radiotherapy plan: irradiation field of gantry angle 315°; d adaptive radiotherapy plan: axial image of dose distribution showing target coverage as ensured by adaptive radiotherapy reflecting the geometrical change (iso-dose line of 100% indicates 2 Gy per fraction); e adaptive radiotherapy plan: irradiation field of gantry angle 0°; f adaptive radiotherapy plan: irradiation field of gantry angle 315°