Dr. Mariangela Massaccesi graduated in Medicine and Surgery in 2003 at the “Università Cattolica del Sacro Cuore” of Rome and completed her residency program in Radiation Oncology in 2007. She currently works at the Gemelli Advanced Radiation Therapy (ART) Center of the Fondazione Policlinico Universitario Agostino Gemelli IRCCS in Rome. She is a member of Associazione Italiana di Radioterapia e Oncologia Clinica (AIRO) and European Society of Radiotherapy and Oncology (ESTRO) and coordinated the activities of the Study Group for Reirradiation of the Italian Association of Radiation Oncology (AIRO) (2016–2019). Her clinical and research interests mainly concern the multidisciplinary management of lung and head and neck cancers, stereotactic radiotherapy, re-irradiation, radio-immunotherapy combinations, and unconventional radiotherapy modalities, such as spatially fractionated radiotherapy.