An Investigational Scan (7T MRI) for the Imaging of Central Nervous System Tumors

Exclusion Criteria

• •Contraindication to MR imaging
• •Absolute or relative contra-indication to 3T MRI due to metallic foreign bodies and devices and/or other conditions that are not MR safe, which include implants with unknown behavior in 3T MRI as well as:
• •* Electronically, magnetically, and mechanically activated implants
• •* Ferromagnetic or electronically operated active devices like automatic cardioverter defibrillators and cardiac pacemakers
• •* Metallic splinters in the eye
• •* Ferromagnetic hemostatic clips in the central nervous system (CNS) or body
• •* Cochlear implants
• •* Other pacemakers, e.g., for the carotid sinus
• •* Insulin pumps and nerve stimulators
• •* Non-MR safe lead wires
• •* Prosthetic heart valves (if dehiscence is suspected)
• •* Non-ferromagnetic stapedial implants
• •Pregnancy
• •Claustrophobia that does not readily respond to oral medication
• •Known allergy to gadolinium-based contrast agents
• •Renal failure as defined by a glomerular filtration rate (GFR) less than 30 or the use of hemodialysis
• •Pregnant
• •Interval treatment with radiation or surgery between the diagnostic MRI lesion identification and planned study MRI