A Study of a Gadolinium-Based Contrast Agent (GBCA) for Adults Undergoing Magnetic Resonance Imaging (MRI) for Known or Highly Suspected Central Nervous System (CNS) Lesions

Inclusion Criteria: 1. Sign the informed consent form, willing to cooperate with the study, and comply with trial requirements. 2. Age ≥ 18 years, male or female. 3. Have at least one known or highly suspected CNS enhancement abnormality or lesion detected by imaging (e.g., CT and MRI) within 12 months prior to ICF signing. Exclusion Criteria: 1. Clinically unstable condition or severe diseases that may affect trial results, such as inability to ensure imaging comparability or reliability of study parameters. 2. Severe renal impairment, defined as aGFR \< 30 mL/min/1.73 m2. 3. Acute kidney injury, irrespective of eGFR levels. 4. Contraindications to MRI examinations or Gadobutrol, such as metallic implants ，pacemakers or claustrophobia. 5. History of severe allergies, including drugs, contrast agents, or other allergens. 6. Severe cardiovascular disease. 7. Female subjects who are pregnant or breastfeeding. 8. Other conditions deemed unsuitable by the investigator.