Venous Phase Timing Does Not Predict SPECT Results During Balloon Test Occlusion of the Internal Carotid Artery.

Introduction: The purpose of this study is to evaluate the role of venous phase timing when compared with technetium-99m Single Photon Emission Computed Tomography (SPECT) during angiographic balloon test occlusion of the internal carotid artery (ICA) and subsequent sacrifice of the ICA.

Methods: Fifty-six patients underwent formal balloon test occlusion from April 2008 to February 2014 at our institution. Venous phase timing was calculated for each patient.