MRI Orbits (Anatomy) - Video Lesson

Hey, everyone. Welcome to today's lesson on the MRI of the orbits. In this lesson, we will look at some anatomy on axial, coronal, and sagittal scans. Let's get started. On this first slice of the orbits, we can clearly see the frontal sinuses located anterior to the brain and posterior to the skull. As the slices move inferior, we can begin to see the orbits emerge as the left superior rectus muscles become visible. The ethmoid sinuses are visualized here as dark as they are filled with air. The globe on the left side is visible and appears bright due to this being a t two weighted image. On this view, the superior rectus muscles are again visible and easy to identify against the bright retro orbital fat. The ethmoid sinuses are still visible with the nasal septum beginning to be visible at the midline. Continuing inferiorly, we can see the lens and the globe of the left orbit with the optic nerve or cranial nerve too visible. The temporal lobes are easily