Lea Alhilali, MD Profile picture
Oct 18, 2022 5 tweets 3 min read Read on X
1/You don't need fancy programs to make great #Illustrations!

#Powerpoint is actually an extremely powerful illustrating tool--if you know the secret #hacks!

Here is a 🧵of videos explaining my best tips & tricks so you can make your own great figures, all just w/powerpoint! Image
2/First, how to make a great 3D vessel in just 3 steps!

The video below shows you that all you need is a gradient, an edge shadow, and an inner glow to make an amorphous curve into a great figure of a vessel:

Image
3/Next, how to get a metallic sheen.

To make metal look real & 3D, you need that bright line of metallic reflection.

The video below shows you how to make a bland colored object reflect light like it's pure gold, just using simple gradients:

Image
4/And of course, one of PPT's most powerful drawing functions isn't even known by most people--the inner shadow function!

It makes figures of humans/bodies look more 3D.

The video below shows how to add 3D shadows right where you need it automatically

Image
5/I am working on making more videos on my powerpoint drawing tips, tricks, & hacks. So keep following for more!

Remember, you don't need expensive programs to make amazing figures for your presentation. You just need powerpoint, some quick tricks, and your own imagination!

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More from @teachplaygrub

Apr 25
1/Have some confusion about tumor perfusion?

Do you go into a coma looking at scans for glioma?

Never fear!

Read on for this month's @theAJNR SCANtastic for what you need to know on the latest in brain tumor imaging!

ajnr.org/content/45/4/4…
Image
@TheAJNR 2/Since the prehistoric days of medicine (1979!), we knew that some brain tumor patients treated w/radiation (XRT) initially declined, but then get better.

Today, we see this on imaging, where it looks worse early, but then gets better.

Now we call this pseudoprogression. Image
@TheAJNR 3/Why does this happen?

XRT induces a lot of inflammatory changes—from initiating the complement cascade to opening the blood brain barrier (BBB)

It’s these inflammatory changes that make the imaging look worse. Image
Read 21 tweets
Apr 19
1/Having trouble remembering how to differentiate dementias on imaging?

Is looking at dementia PET scans one of your PET peeves?

Here’s a thread to show you how to remember the imaging findings in dementia & never forget! Image
2/The most common functional imaging used in dementia is FDG PET. And the most common dementia is Alzheimer’s disease (AD).

On PET, AD demonstrates a typical Nike swoosh pattern—with decreased metabolism in the parietal & temporal regions Image
3/The swoosh rapidly tapers anteriorly—& so does hypometabolism in AD in the temporal lobe. It usually spares the anterior temporal poles.

So in AD look for a rapidly tapering Nike swoosh, w/hypometabolism in the parietal/temporal regions—sparing the anterior temporal pole Image
Read 16 tweets
Apr 18
1/”That’s a ninja turtle looking at me!” I exclaimed.

My fellow rolled his eyes, “Why do I feel I’m going to see this on X or twitter 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 first have to know the anatomy in this region.

I have always thought the medulla looks like a 3 leaf clover in this region. Image
3/ 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
Read 11 tweets
Apr 17
1/CSF leaks are controversial!

Some say they're overdiagnosed, others underdiagnosed

How can YOU make sure you aren’t under or overdiagnosing?

Are you BERN-ing to know when to suspect CSF leak?

Here’s a 🧵about the CSF leak Bern score so you don’t get BERN-ed by CSF leaks Image
2/In CSF leaks, everyone knows about brain sagging.

But this can happen w/other diseases, ie Chiari 1.

Other findings can be seen on brain MRI in CSF leaks.

But what are these findings & are some findings more suggestive than others?

Do⬆️findings = ⬆️suspicion? Image
3/The Bern group looked at 9 quantitative & 7 qualitative signs seen on brain MRI in CSF leaks to see which are most important.

Depending on type & # of findings, they developed a score to indicate what level of suspicion you should have for a leak. Image
Read 15 tweets
Apr 15
1/Is remembering cerebellar anatomy making you dizzy?

Need help telling your flocculus from your nodule?

How much cerebellar anatomy do YOU know?

Here’s some help w/an anatomy thread on the 9 lobules of the vermis! Image
2/Coming from anterior, the first lobule is the lingula

It sticks out from the front of the vermis & is connected to the superior cerebellar peduncle (SCP)

I remember this bc of its very appropriate name—lingula—it looks like a tongue sticking out of the vermis to lick the SCP Image
3/Moving clockwise, next is the central lobule

I remember this bc it's positioned exactly how a central lobule should be positioned, in the driver’s seat!

It's where the front driver position would be if the vermis was a car—up front, looking out a windshield over the lingula Image
Read 12 tweets
Apr 12
1/Time is brain! But what time is it?

If you don’t know the time of stroke onset, are you able to deduce it from imaging?

Here’s a thread to help you date a stroke on MRI! Image
2/In ~25% of acute stroke patients, the time of last known well is well, not known.

Then it’s important to use the stroke’s MR imaging features to help date its timing.

Is it hyperacute? Acute? Subacute? Or are the “stroke” symptoms from a seizure from their chronic infarct? Image
3/Strokes evolve, or grow old, the same way people evolve or grow old.

Appearance of stroke on imaging mirrors the life stages of a person—you just have to change days for a stroke into years for a person.

So 15 day old stroke has features of a 15 year old person, etc. Image
Read 22 tweets

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