Inclusion Criteria:

- Male or female, age 18 years or older of any racial or ethnic group

- Spanish-speaking patients will be eligible

- Pre-operative brain MR imaging suggestive of a brain tumor

- Patient able and willing to provide informed consent

- Karnofsky Performance status > 70%

- Negative serum pregnancy test or child bearing potential terminated by surgery,
radiation, menopause or current use of two approved methods of birth control

Exclusion Criteria:

- Patient unable to provide informed consent

- Karnofsky Performance status < 70%

- Patients who are claustrophobic or have other contraindications to MRI, such as
implanted pacemaker device vascular clips, surgical clips, prosthetic valves,
pacemakers, otologic implants

- NYHA class III and IV congestive heart failure

- Psychiatric or addictive disorders that preclude obtaining informed consent

- Unstable angina

- Pregnant or lactating women

- Women of childbearing potential who refuse a pregnancy test (performed during
screening)