PET/MR and Its Applications in Radiotherapy

Abstract

Modern radiotherapy applications such as dose staining and intensity-modulated radiotherapy require diagnostic images that can offer good resolution and high soft tissue contrast. The combination of positron emission tomography (PET) and magnetic resonance (MR) in the same imaging session can improve tumor target volume identification, as well as reduce tumor and organ movements of the patient with different scanning times. Hybrid PET/MR imaging is gaining increasing attention in radiotherapy planning, adaptive radiotherapy applications and treatment response evaluation. Singlecenter studies limited to academic centers and based on small sample sizes are due to the relatively low availability of hybrid PET/MR imaging devices due to their high costs. © 2023 Universitat de Barcelona. All rights reserved.