Clinical Study of High-intensity Focused Ultrasound Tumor Treatment System(Super Knife) in the Treatment of Breast Cancer

Inclusion Criteria: ECOG Performance Status of 0-1; Histological confirmed invasive breast cancer; Breast cancer tumor measuring ≥2 cm in maximal diameter and a single lesion as measured by mammogram, breast ultrasound, or breast MRI; Breast tumor's borders from the skin are greater than 1 cm; No lymph node or distant metastasis; Absolute neutrophil count (ANC) ≥ 1.5 × 109/L, Platelets ≥ 50 × 109/L, Hemoglobin ≥ 9.0 g/dl iv; Serum creatinine ≤1.5 x upper limit of normal (ULN); AST ≤ 2.5 x ULN, ALT ≤ 2.5 x ULN; Left ventricular ejection fraction ≥ 50%. Exclusion Criteria: Inflammatory breast cancer, bilateral breast cancer, or occult breast cancer; Any kind of prior treatment for breast cancer, including chemotherapy, radiotherapy, endocrine therapy and so on; Pregnant and lactating women; Patients who have participated in other clinical trials.