Radiation-induced Toxicity of the Heart

Inclusion Criteria: * Patients 18 years old or older * Patient's consent and written consent is available * Patients with the non-small cell lung cancer or esophageal cancer or breast cancer who have an indication for intended curative radio(chemo)therapy (in the case of breast cancer inclusion of female patients only) Exclusion Criteria: * Patients who are not capable of giving consent * Pregnant women * Patients with contraindications for MRI examinations (pacemakers, defibrillators, neurostimulators, aneurysm clips, cochlear implants, permanent make-up, metal splinters or osseosynthetic implants) * Patients with insufficient kidney function (glomerular filtration rate (GFR) of less than 30 ml/min) * Patients with the aforementioned tumour entities for whom a palliative indication exists