0:00

Let's take a look at the sagittal midline cut,

0:04

the guts, the heart and soul of MRI of the brain

0:07

where you might use this sequence to evaluate,

0:10

and especially this projection,

0:11

to look for anomalies of the brain in pediatric patients.

0:14

I want to talk about the commissures.

0:16

So, I'm going to start out with the inferior colliculus,

0:19

the superior colliculus.

0:20

And I run right into the posterior commissure,

0:22

which is a pretty small structure.

0:23

And right above it is the habenular commissure,

0:26

sitting between it, the posterior commissure,

0:29

and the pineal gland, which is not a commissure.

0:32

Another commissure is the interthalamic adhesion,

0:36

which you can scroll back and forth,

0:38

the midline portion of the thalamus.

0:41

A well-known commissure,

0:43

anteriorly, is the anterior commissure.

0:45

And then the largest commissure,

0:47

the granddaddy of them all,

0:49

is the corpus callosum.

0:51

And look in the midline,

0:52

we see a vertical slit-like area of hyperintensity.

0:55

Right there.

0:56

The lamina terminalis and

0:58

the rostrum of the corpus callosum,

1:00

followed by genu body and the splenium of the corpus

1:03

callosum, which you're all familiar with.

1:05

And as long as we're in the neighborhood,

1:07

we've got the body and crus of the fornix

1:09

and then the fornix itself.

1:11

We'll move on now to some of the other structures

1:14

in the midline, if you have time.

Midline Sagittal Commissures

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