Strong activation of the innate immune system inside WML and in the NAWM correlated with a more severe trajectory of disability worsening in all MS phenotypes (124). is possible using measures based on medical disease activity. However, despite this has been mainly shown in the relapsing forms of MS, a poor understanding of the underlying pathologic mechanisms leading to either progression or tissue restoration in MS as well as the lack of sensitive outcome actions for the progressive phases of the disease and restoration therapies makes the development of effective treatments a big challenge. Finally, the part of MRI biomarkers in the monitoring of disease activity and the assessment of treatment response in additional inflammatory demyelinating diseases of the central nervous system, such as neuromyelitis optica spectrum disorder (NMOSD) and myelin oligodendrocyte antibody disease (MOGAD) is still marginal, and advanced MRI studies have shown conflicting results. Against this background, this review focused on recently developed MRI actions, which were sensitive to pathological changes, and that could best contribute in the future to provide prognostic info and monitor HPOB individuals with MS and additional inflammatory demyelinating diseases, in particular, NMOSD and MOGAD. Reduced hippocampal volumeNA is definitely incomplete, capturing only 10C15% of cortical demyelination, actually at ultra-high field (UHF) MRI (60). An important aspect to be considered is that most of the lesions recognized on MRI are cortico-subcortical or intra-cortical while the most abundant subpial lesions remain mainly unrecognised. Cortical lesions are typically absent in AQP4-NMOSD (51), while a cortical involvement in MOGAD has been initially explained in the context of ADEM (61). Then, a newly recognised phenotype of benign, unilateral cerebral cortical encephalitis has been recognised (62). Despite the precise underlying mechanisms are not completely recognized, studies within the post-mortem MS mind tissue support the idea that meningeal swelling and the consequent cortical microglia activation lead to progressive cortical demyelination and neurodegeneration (63, 64). Recently, using high-resolution 3D post-Gd T2-FLAIR images, ICAM4 it was possible to non-invasively detect cortically-based HPOB leptomeningeal infiltrates (LME), which in MS were associated with older age, longer disease duration, higher EDSS, higher whole mind, and cortical atrophy (65). However, meningeal enhancement cannot be considered a specific feature of MS since it can also be found in inflammatory, immune-mediated, and infectious vasculitis. A growing body of work offers investigated the part of iron in MS pathogenesis and development. The paramagnetic rim is due to the presence of iron-laden triggered microglia in the lesion edge and may be easily seen on 7T phase images. Using high-resolution susceptibility-based imaging, nearly all 7T paramagnetic rims can also be seen at 3T, suggesting the possibility of implementing them as an end result measure in MS MRI-based medical trials (66). Moreover, quantitative MRI techniques allow iron quantification detection of the molecular processes involved in neuroinflammation and neurodegeneration (122). Inside a 4-yr follow-up study, improved radioligand uptake in the perilesional NAWM expected disability progression self-employed of relapse activity in MS, using mitochondrial 18-kDa translocator protein (TSPO)-PET, a marker of swelling linked to microglial and macrophage activation in neurodegenerative and neuroinflammatory diseases such as MS (123). Using a fresh generation TSPO tracer (F-DPA-714 translocator protein), a novel approach to generate individual maps of WM innate immune cell activation was developed. Strong activation from the innate disease fighting capability inside WML and in the NAWM correlated with a far more serious trajectory of impairment worsening in every MS phenotypes (124). Nevertheless, to date, the usage of different radiotracers, differing patient populations, regional scanning protocols, and different analysis methods, resulted in the heterogeneity of HPOB Family pet research, which limits the comparison across different studies and reproducibility currently. Addressing these problems would enable a multicenter strategy and help improvement PET imaging in the field of analysis to a medically relevant imaging biomarker in MS. Upcoming Perspectives Ultra-High Field MRI Recently, UHF MRI (i.e., seven Tesla and over) has obtained more curiosity about scientific imaging. Indeed, a genuine variety of studies show the huge benefits from the application form.