For my 19 week scan I will be getting the general Morphology Scan, Cervix Length and Uterine Doppplers, I have an idea on how long the Morphology scan will take, had the Cervix length already done 5 times but I haven't had Uterine Dopplers done, can anyone tell me what it involves and how long, as we had to have a different appointment as it was a "special scan" and had to be done by a specific sonographer (glad I mentioned it to the High Risk US Clinic, or I would have been stuffed and it would have been a waste of time!!)

Due to the location of the placenta, completely covering the septum of my uterus where there is no blood flow I assume that is the start of the growth scans, and I think it takes a heap of measurements of bubs and looking at the blood flow etc.

But if anyone can give me some extra detail that would be great