Our group (Elad, Botzer, me and others) has used ultrasound to track 
tongue movements in an objective way, specifically in babies with more 
subtle ("posterior") tongue tie before and after frenotomy. We do see 
specific differences that impact feeding. We are working on applying the 
analysis to some other issues, and are working on publishing. It is a 
very mathematically intensive method, involving tracking the tongue at 
28 points from front to back on every frame of a few suck cycles on 
ultrasound video. Read Elad's paper on normal suck for a better 
understanding of the method: Biomechanics of Milk Extraction During 
Breastfeeding, Proceedings of the National Academy of Sciences (PNAS), 
April 2014.

What you see is also determined by where the transducer is held. And how 
still the baby stays, and if the tech sneezes, etc. Science is difficult 
to do well, and no one is prescient, there are always surprises that 
cause you to need to go back again to look everything over again.

In the meanwhile, I strongly agree that we need to work on good bf 
management first, and then consider other interventions.

Catherine Watson Genna BS, IBCLC  NYC  www.cwgenna.com

On 12/1/2016 9:12 AM, Pat Young wrote:
>   There are pre and post films, just not sure whose, but they do show a difference. Pat in SNJ
>   
>
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