Research on PSMA-Targeted Intraoperative Fluorescent Imaging Agents

Inclusion Criteria: * Provide signed informed consent prior to the trial, and fully understand the trial content, procedures, and potential adverse reactions. * Be able to complete the study as required by the trial protocol. * Be an adult male aged 18-65 years (inclusive). * Have a body weight ≥50 kg and a body mass index (BMI) of 18-30 kg/m² (calculated as BMI = weight \[kg\]/height² \[m²\]). * Neither the subject nor their partner/spouse plan to conceive or donate sperm from screening until 3 months after the trial completion, and agree to use effective non-pharmacological contraception during the study. Exclusion Criteria: Subjects will be excluded if any of the following apply: * Clinically significant abnormalities (physical exam, vital signs, ECG, labs) or severe medical history (cardiac, hepatic, renal, GI, neurological, respiratory, psychiatric, metabolic) deemed unsuitable by the investigator. * History of allergy (≥2 drugs/foods, milk/pollen), or allergy to investigational drug/components. * Alcohol abuse (\>14 units/week) in prior 3 months or positive breathalyzer. * Positive serology for HBsAg, anti-HCV, anti-HIV, or syphilis. * Positive urine drug screen, drug abuse history (past 5 years), or illicit drug use (past 3 months). * Blood loss \>400 mL or platelet donation (2 therapeutic units) in prior 3/1 months, respectively. * Smoking \>5 cigarettes/day (past 3 months) and inability to abstain. * Surgery within prior 3 months. * Participation in another clini…