Uterine Artery Embolization for Symptomatic Adenomyosis: A New Technical Development of the 1-2-3 Protocol and Predictive Factors of MR Imaging Affecting Outcomes

UAE with the 1-2-3 protocol is safe and highly effective to achieve complete necrosis of adenomyosis. Dark SI of adenomyosis is the most favorable predictive factor for UAE on MR imaging, followed by low SI. Heterogenous SI or SI equal to that of the myometrium is an unfavorable predictive factor.