Conventional and advanced imaging in neuromyelitis optica

Area of Science:

• Neuroimmunology
• Neurology
• Radiology

Background:

• Myelitis and optic neuritis present in both multiple sclerosis (MS) and neuromyelitis optica (NMO).
• Neuromyelitis optica has a distinct pathogenesis involving aquaporin 4 (AQP4) antibodies, differentiating it from MS.
• Accurate differentiation is vital for prognosis and treatment, as MS therapies can worsen NMO.

Purpose of the Study:

• To review the current state of conventional and nonconventional MR imaging in neuromyelitis optica.
• To discuss the role of neuroimaging in diagnosing, managing, and researching NMO.
• To highlight diagnostic challenges due to evolving MR imaging patterns and limited clinical syndromes.

Main Methods:

• Review of conventional and nonconventional Magnetic Resonance (MR) imaging techniques in NMO.
• Analysis of clinical, MR imaging, and laboratory data integration for diagnosis.
• Examination of AQP4 antibody seropositivity and its associated cerebral MR imaging patterns.

Main Results:

• Current diagnostic criteria for NMO can be insensitive, particularly in limited clinical presentations.
• Expanding spectrum of cerebral MR imaging patterns in AQP4 antibody-positive individuals adds diagnostic complexity.
• MR imaging plays a critical role in the diagnosis, management, and research of NMO.

Conclusions:

• Timely and accurate differentiation of NMO from MS is imperative for appropriate treatment and improved outcomes.
• Early and aggressive immunosuppression is essential for NMO management to prevent severe disability.
• Advances in MR imaging are crucial for expanding the diagnostic capabilities and understanding of NMO spectrum disorders.