Third Ventricle Floor Anatomy

Floor and roof the floor is formed by the optic chiasma the tuber cinereum and the infundibulum the mamillary bodies the posterior perforated substance and the tegmentum of the midbrain.

Third ventricle floor anatomy. Cerebrospinal fluid here in white flows from the lateral ventricle to the third and finally out the fourth small white arrowhead ventricles. The third ventricle is one of the four csf filled cavities that together comprise the ventricular system. Endoscopic third ventriculostomy is a relatively straightforward procedure unless there are anatomical variations present on the floor of the third ventricle 1 in the cases of lova we have experienced the preoperative mri provided us with important information on the anatomy of the floor of the third ventricle. Ct and mr imaging anatomy of the third ventricle.

The third ventricle lies in the midline of the diencephalon. The infundibular recess was. A mammillary bodies b floor of third ventricle c hypothalamic wall. In the sagittal plane it has a complex fishlike shape created by two anterior and two posterior recesses and a curving roof and floor most of the lateral walls of the ventricle are formed by the medial aspects of the two.

The floor of the third ventricle is greatly thickened and all the structures of the interpeduncular fossa are completely obscured by this opacity. In this patient there is an obstruction blockage at tip of. Surgical anatomy 1 3rd ventricle is located anterior to the foramen of monroe inferior extent optic chiasm anterior lamina terminalis anterior commisure crosses the anterior wall at its upper end superior columns of fornix floor starts anterior posterior optic chiasm infundibular recess tuber. This constructive interference in steady state ciss magnetic resonance image mri shows the key points relevant to etv.

However the mammillary bodies are clearly visible and adherent to one another. Its anterior wall is formed by the lamina terminalis columns of the fornix and the anterior commissure. Running through the third ventricle is the interthalamic adhesion which contains thalamic. The third ventricle is a median cleft between the two thalami and is bounded laterally by them anteriorly and the hypothalamus and subthalamus posteriorly.

The third ventricle is one of the four connected ventricles of the ventricular system within the mammalian brain it is a slit like cavity formed in the diencephalon between the two thalami in the midline between the right and left lateral ventricles and is filled with cerebrospinal fluid csf. The third ventricle is one of the four ventricles in the brain that communicate with one another. In the axial and coronal planes it has a slitlike contour. Download high res image 156kb.