Fig. 4From: Dose delivery reproducibility for PBS proton treatment of breast cancer patients with and without mask immobilizationMaskless patients with cumulative dose CTV and OAR LDDs. a A patient with cumulative dose boost, SCV, and IMN D95% LDDs, b A patient with cumulative dose SCV and IMN D95% LDDs, and c Four maskless patients with cumulative dose lung LDDs. P-CT, planning computed tomography; V-CT, verification computed tomography; Vx, V-CT at fraction x; Rx: prescription; GyRBE, Relative-Biological-Effectiveness dose in Gray; cum, cumulative; SCV, supraclavicular node; IMN, internal mammary nodes; RP, replan; CTV, clinical target volume; OAR, organ at riskBack to article page