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written by

Donald Frei, MD

Dr. Donald Frei is an neuroInterventional surgeon based in Denver, Colorado

October 19, 2017

Framing Eighteen Coils in Cerebral Aneurysms Trial (FEAT)

FEAT is a prospective, randomized trial comparing the utilization of 0.014-0.0155” coils versus smaller diameter coils in mid-sized aneurysm treatment.

The 0.014-0.0155” bare platinum coils (Stryker, Natick, MA) are FDA-approved and in common use at institutions in this country and across the world. Patients between 18 – 80 years of age presenting with ruptured or unruptured cerebral aneurysm appropriate for endovascular treatment as determined by the neurovascular treating team (neurointerventionist and/or neurosurgeon) may be eligible.

The primary objective of FEAT is to compare angiographic outcomes in patients receiving 0.014-0.0155″ platinum framing and filling coils (larger diameter coils) versus those treated solely with coils less than 0.014″ (with a standard diameter). It is hypothesized that angiographic occlusion at follow-up imaging will be more frequent in patients receiving 0.014-0.0155″ platinum coils during embolization compared to those receiving smaller-diameter coils.

Local Principal Investigator: Don Frei, MD

For more information about this trial, please contact Alicia Drew, Director, Research and Physician Services at Radiology Imaging Associates.

If you would like to explore more clinical information about this trial, please see the trial page on