TY - GEN AU - Avril,Norbert AU - Ros,Pablo R TI - Letter from the guest editors SN - 1558-4658 PY - 2015///0825 KW - Humans KW - Magnetic Resonance Imaging KW - Multimodal Imaging KW - Positron-Emission Tomography N1 - Publication Type: Editorial UR - https://doi.org/10.1053/j.ro.2014.09.002 ER -