Lea Alhilali, MD Profile picture
May 31, 2023 7 tweets 4 min read Read on X
1/ “Say Aaaaaaah!” I was explaining to my resident how I remember tongue anatomy on imaging & he said, “You have to put it on Twitter!”

So here's a #tweetorial about how to remember tongue anatomy on imaging.

#medtwitter #radres #medstudent #FOAMed #FOAMrad #neurorad #meded Image
2/ When you look on the coronal plane at the tongue, the first thing you notice are two column like structures that look like a pair of jeans—genioglossus—or as I like to say “jean-ee-o-glossus.” Genioglossus is latin for jeans of the tongue, right?  Image
3/Right below the jeans are what look like a pair of clown shoes—the geniohyoid. So you see a pair of legs going right into a pair of shoes. Image
4/The clown shoes look like they are balancing on a tight rope—the tight rope is the mylohyoid. The mylohyoid is easy to remember as the tight rope b/c it is often called the mylohyoid sling—a sling is like a tight rope Image
5/ So every time I look at the tongue on imaging, I am looking to make sure I can see my clown walking on a tight rope. Any distortion of that is pathologic. Image
6/ And although it’s not quite the tongue, right beneath the tight rope are two tubular looking structures pointed at you—the anterior bellies of the digastric muscles. I think they look like two gun barrels pointed at you. Image
7/ So next time some asks you about tongue anatomy, you can tell them about the clown on a tight rope above two gun barrels and they can say, “Aaaaah, now I get it.” Image

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Lea Alhilali, MD

Lea Alhilali, MD Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @teachplaygrub

Feb 25
1/My hardest thread yet! Are you up for the challenge?

How stroke perfusion imaging works!

Ever wonder why it’s Tmax & not Tmin?

Do you not question & let RAPID read the perfusion for you? Not anymore! Image
2/Perfusion imaging is based on one principle: When you inject CT or MR intravenous contrast, the contrast flows w/blood & so contrast can be a surrogate marker for blood.

This is key, b/c we can track contrast—it changes CT density or MR signal so we can see where it goes. Image
3/So if we can track how contrast gets to the tissue (by changes in CT density or MR signal), then we can approximate how BLOOD is getting to the tissue.

And how much blood is getting to the tissue is what perfusion imaging is all about. Image
Read 18 tweets
Feb 24
1/”That’s a ninja turtle looking at me!” I exclaimed. My fellow rolled his eyes at me, “Why do I feel I’m going to see this a thread on this soon…”

He was right! A thread about one of my favorite imaging findings & pathology behind it Image
2/Now the ninja turtle isn’t an actual sign—yet!

But I am hoping to make it go viral as one. To understand what this ninja turtle is, you have to know the anatomy.

I have always thought the medulla looks like a 3 leaf clover in this region.

The most medial bump of the clover is the medullary pyramid (motor fibers).

Next to it is the inferior olivary nucleus (ION), & finally, the last largest leaf is the inferior cerebellar peduncle.

Now you can see that the ninja turtle eyes correspond to the ION.Image
3/But why are IONs large & bright in our ninja turtle?

This is hypertrophic olivary degeneration.

It is how ION degenerates when input to it is disrupted. Input to ION comes from a circuit called the triangle of Guillain & Mollaret—which sounds like a fine French wine label! Image
Read 9 tweets
Feb 21
1/They say form follows function!

Brain MRI anatomy is best understood in terms of both form & function.

Here’s a thread to help you to remember important functional brain anatomy! Image
2/Let’s start at the top.

At the vertex is the superior frontal gyrus.

This is easy to remember, bc it’s at the top—and being at the top is superior. It’s like the superior king at the top of the vertex. Image
3/It is also easy to recognize on imaging.

It looks like a big thumb pointing straight up out of the brain

I always look for that thumbs up when I am looking for the superior frontal gyrus (SFG) Image
Read 11 tweets
Feb 14
1/”I LOVE spinal cord syndromes!” is a phrase that has NEVER, EVER been said by anyone.

Do you become paralyzed when you see cord signal abnormality?

Never fear—here is a thread on all the incomplete spinal cord syndromes to get you moving again! Image
2/Spinal cord anatomy can be complex.

On imaging, we can see the ant & post nerve roots. We can also see the gray & white matter

Hidden w/in the white matter, however, are numerous efferent & afferent tracts—enough to make your head spin. Image
3/Lucky for you, for the incomplete cord syndromes, all you need to know is gray matter & 3 main tracts

Anterolaterally, spinothalamic tract (pain & temp)

Posteriorly, dorsal columns (vibration, proprioception, & light touch), & next to it, corticospinal tracts—providing motor Image
Read 20 tweets
Feb 9
1/To be or not 2b?? That is the question!

Do you have questions about how to remember cervical lymph node anatomy & levels?

Here’s a SUPERBOWL thread to show you how! Image
2/Google cervical lymph node anatomy & you always get this anatomic picture w/the head flung back like a model posing.

But unless you live in LA, your patients don’t look like this & understanding anatomy from this image is difficult Image
3/First, you need to know how lymph node drainage works in the neck

Nodes drain like rivers—smaller streams drain into larger rivers

In the neck, there are outer circle nodes (peripheral) & inner circle nodes—both drain into the large river of the deep cervical nodes Image
Read 17 tweets
Jan 31
1/Can’t remember what to look for on scans for memory loss?

New Alzheimer’s treatments are changing these scans!

Read on for the latest @theAJNR SCANtastic on imaging in AD:

ajnr.org/content/early/Image
2/Current hypothesis in Alzheimer’s disease (AD) is that accumulation of amyloid beta (AB) protein result sin inflammation & neuronal death

Thus, new treatments in AD are focused on anti-AB antibodies that remove this protein in AD patients. Image
3/However, AB protein is also deposited in vessel walls in AD pts—just like in cerebral amyloid
angiopathy

So removing it from vessel walls increases vascular permeability, leading to edema & hemorrhage

Think of it like how a baby gets mad when you take its candy away! Image
Read 15 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us!

:(