FUAS procedure
Preparation before FUAS and during the FUAS procedure conformed to the guideline of Focused Ultrasound Tumor Therapeutic System (Model-JC200, Chongqing Haifu Medical Technology Co., Ltd.)9,13. The ablation volume and non-perfused volume (NPV) ratio of adenomyotic lesions were performed by contrast-enhanced ultrasound15. Treatment details including total ablation time, sonication time and average sonication power were recorded by computer. The ablation volume was calculated using the ellipsoid volume formula V=4/3πABC16, in which A, B and C represent the long diameter, wide diameter and thickness diameter of the lesion, respectively. The NPV ratio = NPV/adenomyotic lesion*100%9. All patients were kept under observation for 24h after FUAS.