Inclusion Criteria:  Age ≥18 years Stage III/IV (N)SCLC, esophageal cancer or malignant lymphoma that will be treated with curative intent WHO 0-2. Written informed consent  Exclusion Criteria:  Facial deformations so that facial mask is impossible to fit Noncompliance with any of the inclusion criteria. Planned for radiotherapy with fraction dose ≥3 Gy. Severe heart failure (LVEF<30%)