I had my CCSVI treatment done a week ago and my case was identical to the one you presented with an hypoplastic vein. It was elected to leave that vein alone and to dilate the constricted valve at the confluens with the brachiocephalic vein with I would guess that it was 20 to 30% narrowed.
I had incredible improvements the first day including the disappearance of my enlarged left periorbital vein, but then my improvement disappeared and I think now I am back to pretreatment status.
drsclafani wrote:unless your distend the annular constriction beyond its elasticity, you will not break the band and elastic recoil is the rule. Some of this tissue is really elastic and really high pressure is necessary. Yesterday, it required 25 atmospheres to overcome the tissue band causing the obstruction
The balloon however does not have to be larger than your vein. Once the annular constriction is broken, the constricted vein seems to distend in the area of the constriction. So I might try an 18 or 20 mm balloon on your vein.
I think the reason is that since the dilation was only 20% that was not enough to break the annulus band as a 50% narrowing would have allowed and even my periorbital vein are back.
I do not know yet what size balloon and what pressure was used and I will be able to give you more info once I get my DVD of the procedure.
At this point I am thinking to repeat the doppler to see if there is any change in my left jugular vein.
I am grateful to you for sharing your knowledge with us.