Preoperative MRI Classification May Not Predict Symptom Relief after Uterine Artery Embolization in Patients with Adenomyosis

Objective:To investigate the association between magnetic resonance imaging(MRI)classification and symptom relief after uterine artery embolization(UAE)in patients with adenomyosis.Methods:Totally,73 patients with symptomatic adenomyosis who underwent UAE were retrospectively analyzed.Preoperative MRI classification was defined as:type Ⅰ,high signal on both T2-weighted images(T2WI)and T1-weighted images(T1WI);type Ⅱ,high signal only on T2WI,and type Ⅲ,high signal on neither T1WI nor T2WI.Dysmenorrhea was measured with the visual-analog scales and the degree of menorrhagia was measured according to the number of sanitary pads used in one menstrual cycle.Dysmenorrhea and menorrhagia were measured before UAE and 12 months after UAE.Results:The number of the type Ⅰ,Ⅱ,Ⅲ cases was 23,37,and 13,respectively.The baseline characteristics of the three groups exhibited no significant difference.The alleviation rates of dysmenorrhea among type Ⅰ,Ⅱ,Ⅲ cases were 73.9%,89.2%,and 84.6%,respectively(P=0.455).The alleviation rates of menorrhagia for type Ⅰ,Ⅱ,Ⅲ were 69.6%,78.4%,and 92.3%,respectively(P=0.714).Conclusion:Pre-procedure MRI classification and symptom relief after UAE exhibited no significant association.UAE has a favorable mid-term control on dysmenorrhea and menorrhagia among patients with adenomyosis.Preoperative MRI classification might not indicate symptom relief.More research is needed before changing clinical practice.

Performance variability of Ba0.5Sr0.5Co0.8Fe0.2O3-δ cathode on proton-conducting electrolyte SOFCs with Ag and Au current collectors

Ba0.5Sr0.5Co0.8Fe0.2O3-δ （BSCF） is one of the most active cathode materials and shows significant hydration effect suggesting possible proton conductivity. In this study, the performance of BSCF cathode on a protonconducting BaZr0.1Ce0.7Y0.2O3-δ（BZCY） electrolyte with silver and gold current collectors was determined. The electrochemical characteristics of the symmetrical and anode-supported cell with diluted silver electrode, silver current collector or gold current collector on BSCF electrode were compared. The significant result is that, although the diluted silver electrode itself shows poor operation stability, the silver current collector has strong electrocatalytic contribution to the BSCF cathode performance on the proton-conducting electrolyte, leading to higher cell performance than that with the gold current collector.