Type:
Educational Exhibit
Keywords:
Head and neck, Anatomy, Neuroradiology brain, CT, MR, CT-Angiography, Education, Diagnostic procedure, Dementia, Cancer, Seizure disorders
Authors:
F. Pozo Piñon1, A. B. Barba Arce2, E. herrera romero1, V. Fernández Lobo3, Y. Lamprecht3, E. Montes Figueroa3, E. Marín Diez3, E. M. Marco De Lucas4; 1Santander, Cantabria/ES, 2Torrelavega, Cantabria/ES, 3Santander/ES, 4Santander, Ca/ES
DOI:
10.1594/ecr2018/C-0378
Background
The hippocampus is a region of the brain located in the medial temporal lobe that lies in the hippocampal sulcus immediately below the floor of the temporal horn of the lateral ventricle and in coronal view has a form that remembers a sea horse.
It has a head (posterior to the amygdala),
a body,
and a tail (which follows the upwardly curving lateral ventricle).
Anatomically,
it is part of the limbic system,
a set of brain structures that manage primitive physiological responses.
It exerts fundamental functions related to memory and spatial perception and participates in the formation of new memories from experiences.
Therefore,
lesions of the hippocampus generally result in serious difficulties for the formation of new memories,
being the long-term memory the latest affected.
The anatomy of the hippocampus is best imaged with MRI using specific sequences planes.
The coronal is angled perpendicular to the long axis of the hippocampal body,
and the axial body oriented with long axis of the hippocampal body.
The three parts of the hippocampus (head,
body and tail) can be identified based on morphology and by using local landmarks.
For the study of the vasculature of the hippocampus we can either use the Angio-CT or the Angio-MRI,
better using first the CT because of the lower costs and faster acquisition times,
and MRI in cases of allergy to iodinated contrasts or if we perform at the same time the morphological and vascular study of the hippocampus.