Coronal Hindbrain | Brain Parts

Hindbrain – Coronal – Concepts

Ashley Davidoff MD

Introduction

Hindbrain Structures below the Tentorium

Lying Under the Tent

In this conceptual coronal drawing the distinction between the supratentorial and infratentorial space is made apparent by the bright pink tentorium that acts as a roof of the posterior fossa. The forebrain and the upper part of the midbrain lie above the tentorium, and the lower midbrain and hindbrain lie below. All the structures above the pink line are classified as supratentorial structures , and those below are infratentorial.

Supratentorial and Infratentorial Structures

In this T2 weighted coronal MRI image the distinction between the supratentorial and infratentorial structures is made apparent by the bright pink tentorium that acts as a roof of the posterior fossa. The forebrain (green) midbrain (orange) and hindbrain (pink salmon and maroon) and the cerebellum (maroon), with other parts of the hindbrain filled in including the pons (light pink) middle cerebellar peduncles (mauve) and medulla (salmon) All the structures above the pink line are supratentorial, and those below are infratentorial. Part of the midbrain is supratentorial and part is infratentorial. The ventricular system is outlined in blue

The Pons

In this T2 weighted MRI image – the pons (pink), which part of the hindbrain is demonstrated . The fourth ventricle is not seen since it is posterior to the pons in this section.

The Medulla Oblongata

In this T2 weighted MRI image – the medulla (salmon) which part of the hindbrain is demonstrated. It lies below the tenntorium .

Hindbrain

In this T2 weighted MRI image – the a portion of the cerebellum has been overlaid in maroon, with other parts of the hindbrain including the pons (light pink) middle cerebellar peduncles (mauve) and medulla (salmon) The ventricular system is outlined in blue

Cerebellum

The T2 weighted MRI of the brain in coronal projection shows an almost rhomboid or diamond shaped cerebellum.