RT Journal Article SR Electronic T1 Ultrasound for the evaluation of stenosis after flow diversion JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP neurintsurg-2017-013049 DO 10.1136/neurintsurg-2017-013049 A1 Cameron M McDougall A1 Khurshid Khan A1 Maher Saqqur A1 Andrew Jack A1 Jeremy Rempel A1 Carol Derksen A1 Yin Xi A1 Michael Chow YR 2017 UL http://jnis.bmj.com/content/early/2017/05/08/neurintsurg-2017-013049.abstract AB Background and purpose Flow diversion is a relatively new strategy used to treat complex cerebral aneurysms. The optimal method for radiographic follow-up of patients treated with flow diverters has not been established. The rate and clinical implications of in-stent stenosis for these devices is unclear. We evaluate the use of transcranial Doppler ultrasound (TCD) for follow-up of in-stent stenosis.Materials and methods We analyzed 28 patients treated with the Pipeline embolization device (PED) over the course of 42 months from January 2009 to June 2012. Standard conventional cerebral angiograms were performed in all patients. TCD studies were available in 23 patients.Results Angiographic and TCD results were compared and found to correlate well.Conclusions TCD is a potentially useful adjunct for evaluating in-stent stenosis after flow diversion.