Galve Lahoz, PabloRodriguez Vila, B.López Herraiz, JoaquínGarcía Vázquez, V.Malpica, N.Udías Moinelo, José ManuelTorrado Carvajal, A.2026-04-232026-04-232024-01-01Galve, P., et al. «Recent advances in combined Positron Emission Tomography and Magnetic Resonance Imaging». Journal of Instrumentation, vol. 19, n.o 01, enero de 2024, p. C01001. DOI.org (Crossref), https://doi.org/10.1088/1748-0221/19/01/C01001.10.1088/1748-0221/19/01/c01001https://hdl.handle.net/20.500.14352/135002© 2024 IOP Publishing Ltd and Sissa Medialab Margarita Salas: CT18/22Hybrid imaging modalities combine two or more medical imaging techniques offering exciting new possibilities to image the structure, function and biochemistry of the human body in far greater detail than has previously been possible to improve patient diagnosis. In this context, simultaneous Positron Emission Tomography and Magnetic Resonance (PET/MR) imaging offers great complementary information, but it also poses challenges from the point of view of hardware and software compatibility. The PET signal may interfere with the MR magnetic field and vice-versa, posing several challenges and constrains in the PET instrumentation for PET/MR systems. Additionally, anatomical maps are needed to properly apply attenuation and scatter corrections to the resulting reconstructed PET images, as well motion estimates to minimize the effects of movement throughout the acquisition. In this review, we summarize the instrumentation implemented in modern PET scanners to overcome these limitations, describing the historical development of hybrid PET/MR scanners. We pay special attention to the methods used in PET to achieve attenuation, scatter and motion correction when it is combined with MR, and how both imaging modalities may be combined in PET image reconstruction algorithms.engjournal article1748-0221https://dx.doi.org/10.1088/1748-0221/19/01/c01001https://iopscience.iop.org/article/10.1088/1748-0221/19/01/C01001open access615.849539.1Medical image reconstruction methods and algorithmsMulti-modality systemsQuantitative imagingPET/MRFísica nuclearDiagnóstico por imagen y medicina nuclear32 Ciencias Médicas