Radiopaedia Blog

20th Sep 2016 01:46 UTC

Cone beam CT project

A quick project aimed at creating a cone beam CT article and additional of new cases. 

  • Type: topic cluster creation
  • Results:
    • create new cone beam CT article
    • addition of two new cases
  • Duration: 1-2 weeks
  • Team: Matthew Lukies, David Gai, Jeremy Jones, Ian Bickle, Henry Knipe,

The Radiopaedia Facebook Page has officially passed 500K likes! We decided to mark the occasion by arranging multiple different pathologies into a celebratory number 500. Can you make all seven diagnoses? Take a look for yourself and then check out the answers below. Good luck! 





Dr Matt Skalski is a research fellow in musculoskeletal radiology at the University of Southern California Keck School of Medicine in the United States, and is a senior editor at

Twitter: @docskalski

 NB: Opinions expressed are those of the author alone, and are not those of his employer nor of


For years has only offered a 'desktop' version, even to all of you visiting from your phone or tablet. This has been annoying. We know how many of you look at our cases while on the move. Fortunately this is about to change. 

For the past 18 months we have been re-factoring the entire site to get ready for responsive layout (in other words, adapting the layout of the site to whatever size your device / browser happens to be). Along the way we found many tangential bits of code that needed cleaning up or improving, so the overall task grew in scope and has had wide ranging under-the-hood implications. It has also taken a long time. 

For some months the editorial group has been previewing this new layout in an opt-in fashion. We've loved it. We are now ready to broaden the opt-in audience to all logged in users, before switching this on as the default view for mobile sized devices. 

Not only is the layout far more friendly for small devices, but scrolling behavior of cases has also been changed to make it easier and to support zoom-pan-scroll! 



There will of course be ads, but they have been kept to a minimum. Also, by becoming a supporter you can experience the joys of on mobile without any ads! Learn more about ad-lite/ad-free Radiopaedia for supporters

When logged in, you will see a notification under the header inviting you to opt-in to our responsive layout. Please do so, and please let us know what you think.


A. Prof Frank Gaillard is a neuroradiologist at the Royal Melbourne Hospital, Melbourne, Australia, and is the Founder and Editor of 

NB: Opinions expressed are those of the author alone, and are not those of his employer, or of and the Royal Australian and New Zealand College of Radiologists (RANZCR)​ are collaborating to give everyone in the world an opportunity to a submit a radiology case for the RANZCR 2016 Case of the Day competition.

Each day during the RANZCR 2016 Annual Scientific Meeting (October 13 - 16) on the Gold Coast a series of cases will be featured in the Case of the Day area. The cases will also be shared across Radiopaedia's social media network and on the homepage so the whole world can join in the learning. 

The competition is open to anyone in the world, not just those living in Australia and New Zealand. This is our way of helping to make RANZCR 2016 a truly global education event.  


All successful Case of the Day submission will receive 12 months online access to our Adult Brain MRI review course and Neuroradiology Update 2016 course, featuring Frank Gaillard, Andrew Dixon and Peter Mitchell. Prizes will also be available for delegates at the conference who complete the daily case of the day quiz. 


Submissions close on October 9, 2016 and the winners will be chosen by Radiopaedia and RANZCR in the following couple of weeks. Winners will be contacted by email, so please make sure the email listed in your profile is correct. 

Submitting a case

To have your case considered for the RANZCR 2016 Case of the Day, simply upload an awesome case to Radiopaedia and add the tag "RANZCR2016" in the right hand column of the case edit page. We're accepting great radiology cases from any subspecialty.

For those submitting a case to Radiopaedia for the very first time, you'll find that it is really easy.  The short video tutorial below will help you with most things you need to know. It may also be worth checking out our case publishing guidelines


If you have any questions, please write to [email protected].

So here I am sitting in a holiday house by the seaside, my kids are (finally) asleep, my wife is back home, and it's raining and cold outside. To make matters worse the wifi here is terrible, and netflix is completely out of the question. So what is a neuroradiologist going to do? 

Well I have been thinking of creating neuroanatomy content  aimed at taking folk from knowing nothing to, well, knowing enough (more on this at a later date) so I mixed myself a martini (Hendrick's, dry, twist) and started at the start. Lobes. Simple right? 

So here is the question I immediately faced: how many lobes are there? 

We all agree on the 4 of them. 

  1. frontal lobe
  2. parietal lobe
  3. occipital lobe
  4. temporal lobe

Easy... so lets record the video right? Wrong. What about the insula? What about the cingulate gyrus and hippocampus? I've been playing this game a while, and really I feel I should know, or at least have an opinion, but the truth is it turns out this is fairly contentious stuff, maybe enough for a neuroanatomist to throw a punch after a couple of beers (or martinis). 

One source I found begins with "The insula is the fifth lobe of the brain and it is the least known" which begs the question "what about the limbic lobe?" Is the limbic lobe the sixth lobe and so little know the authors of the above manuscript didn't know about it? (yes I know I am probably using the term "beg the question" incorrectly; pedant). You see the term limbic lobe has been around since 1850's when Paul Broca, no less, coined the term. 

So I turned to Google's Ngram viewer for the answer:

And more specifically just the "limbic lobe" and "insular lobe":

Other than all the lobes taking a hit during the great depression and WWII, it looks like we can relatively safely ignore the 'limbic lobe' from this perspective, which is sort of a shame really. 

When pitting the terms against their main rivals ("limbic lobe" vs "limbic system" and "insular lobe" vs "insular cortex") we don't really see a real contest either. 




Anyway, enough of this silliness. Four lobes it is. Plus insular cortex. Plus cingulate gyrus (which since it spans both frontal and parietal lobes, I'm going to continue to think of separate). Time for bed. 



A. Prof Frank Gaillard is a neuroradiologist at the Royal Melbourne Hospital, Melbourne, Australia, and is the Founder and Editor of 

NB: Opinions expressed are those of the author alone, and are not those of his employer, or of Blah blah blah.

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