PET/MRI in Lymphoma

Hybrid PET/MR combines two advanced imaging techniques, offering the potential to improve image quality, reduce radiation dose and combine functional information from MR (dynamic contrast-enhanced sequences, diffusion-weighted imaging and magnetic resonance spectroscopy) with PET in the management of lymphoma. The reduction in radiation dose afforded by PET/MR in Hodgkin lymphoma, which is the commonest cancer in teenagers and young adults, is particularly appealing. PET/MR reduces radiation dose by approximately 60–77% compared with PET combined with full-dose diagnostic CT and 20–27% compared with PET combined with lower-dose CT.