PRIMARY OBJECTIVE:~I. Assess the potential superiority of contrast-enhanced (CE) 7T MRI by comparing to standard of care CE 3T MRI in detecting occult brain metastases lesion at time of diagnosis of new brain metastases.~SECONDARY OBJECTIVE:~I. Describe the imaging characteristics of melanoma brain metastases on 7T MRI of the brain.~EXPLORATORY OBJECTIVE:~I. Evaluate incidence of diagnosis of leptomeningeal disease on CE 7T MRI brain.~OUTLINE:~Within 2 weeks of initial standard of care 3T MRI, patients undergo 7T MRI scan with and without contrast over 1-2 hours.
This clinical trial studies the use of 7-Tesla (7T) magnetic resonance imaging (MRI) in detecting melanoma that has spread to the brain (melanoma brain metastases). The standard MRI brain imaging is done on 3T or similar MRI machine, but the 7T MRI machine has a larger magnet which has been shown to have superior resolution of the brain and of non-cancerous brain lesions. Diagnostic procedures such as 7T MRI may help find and diagnose melanoma brain metastases earlier than standard 3T MRI.