Imaging Aspects of the Hippocampus.

Area of Science:

• Neuroscience
• Radiology
• Pathology

Background:

• The hippocampus is a complex brain structure with vital functions, yet its pathologies are challenging to diagnose.
• A wide range of diseases, including congenital, degenerative, and neoplastic conditions, can affect the hippocampus.

Purpose of the Study:

• To present the anatomy, function, and development of the hippocampus.
• To introduce an original imaging diagnostic algorithm for hippocampal pathologies.
• To guide differential diagnosis of nodular and nonnodular conditions affecting the hippocampus.

Main Methods:

• Magnetic Resonance Imaging (MRI) is the primary imaging modality for hippocampal evaluation.
• Computed Tomography (CT) and nuclear medicine complement MRI analysis.
• Differential diagnosis relies on recognizing anatomical features and imaging findings like volumetric changes, diffusion restriction, and enhancement patterns.

Main Results:

• An algorithm is proposed to classify hippocampal pathologies into nodular and nonnodular types.
• Key MRI findings such as T1 hyperintensity, diffusion restriction, and enhancement are crucial for diagnosis.
• Recognition of pathologies in adjacent structures, like the amygdala, is also important.

Conclusions:

• Hippocampal pathologies often present with similar clinical syndromes, making imaging findings critical for diagnosis.
• The developed algorithm assists in narrowing the differential diagnosis for hippocampal abnormalities.
• Accurate imaging interpretation, combined with clinical data, is essential for effective patient management.