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I looked at MR neurography, and I'm not really grasping the difference between MRN and MRI.

I was looking at Dr. Aaron Filler's website ( as I was looking at some pain medicine websites and I'm confused when MRN is used in place of MRI. Are there clear indications to use MRN over MRI?



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he wrote a great book (in my opinion) "The Human Ape" (if i remember correctly) --- a must read for any spine practitioner...


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Chances are you will not be using neurography, a proprietary software program for MRI scanners that is available only in a few sites...
Radiologists will tell you they can do the same thing by focusing on the nerves using the appropriate views, usually unknown to most MRI techs...
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I am at UCLA now and we have referred some patients (maybe once a month or so) to Dr. Filler. It's usually for patients who are referred for evaluation of possible CRPS (I am with a CRPS specialist) who show a lot of features of CRPS but have some signs of possible nerve entrapment. His consultations are expensive but with carefully selected patients, we have seen some good results. He will actually perform the nerve release then send them back to us. I know he has other areas of expertise but that is the context under which I know of Dr. Filler's work.
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