Are you close-by so you could get a doppler ultrasound done to see if there's restenosis? I am sorry to hear about symptoms returning.
Yes, shake loose some details about the study if you can! He had aimed for an ambitious 600 patients (that was what the study was approved for) but I think it would be hard to round up that many. He did present some preliminary findings at ISNVD, now that I think about it.