Clinical Research Directory

Inclusion Criteria: 1. Age 18-75 years old, any gender; 2. Clinically or pathologically confirmed diagnosis of breast cancer, or suspected recurrence/metastasis; 3. Presence of at least 1 measurable lesion (RECIST 1.1 criteria); 4. ECOG score 0-2 and expected survival ≥ 12 weeks; 5. Laboratory markers are met: Blood count: WBC ≥4.0×10⁹/L, PLT ≥100×10⁹/L, Hb ≥90 g/L Liver and kidney function: ALT/AST ≤ 2.5 × ULN, SCr ≤ 1.5 × ULN; 6. Signed informed consent. Exclusion Criteria: 1. Major surgery or trauma within 4 weeks; 2. Severe infection, liver or kidney insufficiency; 3. History of allergies (developer components); 4. Pregnant/nursing female or not using effective contraception; 5. Inability to co-operate with PET (e.g. claustrophobia); 6. Any other situation that researchers considered it unsuitable to participate in the trial.