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Parieto-occipital Sulcus

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Let's take a look at the parieto-occipital sulcus,

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which separates the occipital lobe from the parietal lobe.

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Here it is.

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It looks a little bit like the letter Y lying on its side.

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Here's our Y right here.

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And it merges with this calcarine sulcus

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to form the anterior calcarine sulcus.

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Now,

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the structure in front of it looks a little

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bit kind of like a tongue of beef.

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Right here.

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Right there,

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is the continuation of the cingulate sulcus.

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Now, let's take our arrows away for a minute

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or our lines away.

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We've got the occipital lobe and the cuneus.

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In front of that is the precuneus.

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And within the precuneus is something that

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looks a little bit like the letter H.

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There's our H.

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And this is the subparietal sulcus

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located in the precuneus.

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In front of the precuneus is the paracentral lobule.

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Within the paracentral lobule is the oblique perpendicular

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to the marginal sulcus, central sulcus of Rolando.

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This paracentral sulcus,

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which we discussed in another vignette,

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which comes up anteriorly,

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forms the anterior boundary of the paracentral lobule.

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All of this contributing to the frontal lobe until we get

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to the central sulcus of Rolando,

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which defines the parietal lobe posterior to it,

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which is a tough designation to make in the sagittal

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near the midline.

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So, frontal lobe, paracentral lobule,

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central sulcus of Rolando,

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a little bit of the parietal lobe,

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precuneus, subcentral sulcus,

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cuneus, occipital lobe,

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superior, inferior, calcarine sulcus,

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calcarine sulcus, merges with the parieto-occipital

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sulcus to form the anterior calcarine sulcus.

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And there's the beef tongue of the cingulate gyrus.

Report

Description

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Tags

Neuroradiology

MRI

Brain

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