Clinical Research Directory

Inclusion Criteria: * Age 18-75 years, ECOG score 0 or 1. * Clinically or pathologically confirmed diagnosis of patients with HER2 expression breast cancer or suspected expression breast cancer. * Life expectancy ≥ 12 weeks. * At least one measurable target lesion according to RECIST 1.1 criteria. * All participants of reproductive potential (regardless of gender) must commit to using effective contraceptive methods throughout the trial participation and for 6 months after the last PET scan. * Ability to understand and voluntarily sign the informed consent form, with good compliance. Exclusion Criteria: * Severe hepatic or renal dysfunction. * Pregnant or lactating women, or women planning to become pregnant. * Inability to lie supine for half an hour. * Refusal to participate in this clinical study. * Suffering from claustrophobia or other mental illnesses. * Other conditions that the investigator deems unsuitable for participation in the trial.