Comparaison Between MRI Alone or Combined With Positron Emission Tomography for Brain Metastasis Diagnosis

Exclusion Criteria

• •Pregnancy or breastfeeding;
• •Other condition that may influence the imaging result;
• •Renal impairment (\<30 mL/min/1.73 m2). This threshold is consistent with recent RAC recommendations; Note: For participants with intermediate renal clearance (30-60 mL/min/1.73 m2), the total gadobutrol dose injected is set at the manufacturer's recommended clinical dose. For patients with renal clearance greater than 60 mL/min/1.73 m2, a dose of 1.5x the normal dose is used. These dose values have been approved by Dr. Chénard and are consistent with the RAC recommendations.
• •Inability to maintain supine position for the required duration (variable, depending on the sequence);
• •Patients who have previously received full brain irradiation;
• •Patients who are claustrophobic and cannot tolerate insertion into the MRI scanner;