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Brief Title: Ferumoxytol- and Gadolinium-Labeled MRI in Measuring Tumors Before or After Treatment in Patients With Primary or Metastatic Brain Tumors
Official Title: A Phase II Study of Ferumoxytol and Gadolinium Magnetic Resonance Imaging at 3T and 7T in Subjects With Primary or Metastatic Brain Tumors Either Before or After Therapy
Study ID: NCT00659126
Brief Summary: This phase II trial studies how well magnetic resonance imaging (MRI) using contrast imaging agent ferumoxytol works in comparison to standard imaging agent gadolinium in measuring tumors in patients undergoing treatment for brain tumors or other tumors that have spread to the brain. Diagnostic procedures, such as MRI, may help find and diagnose disease and find out how far the disease has spread. MRI scans use radio waves and a powerful magnet linked to a computer to create detailed pictures of areas inside the body. The contrast imaging agent ferumoxytol consists of small iron particles taken by the blood stream to the brain and to the area of the tumor. It is highly visible on the MRI, and may help visualize the blood flow going through the tumor better than gadolinium can. Using a more sensitive and faster 7 Tesla (7T) magnet MRI in conjunction with a contrast imaging agent may provide a better way to measure tumors than the 3 Tesla (3T) magnet MRI in patients with brain tumors.
Detailed Description: PRIMARY OBJECTIVES: I. To compare quantitative blood brain barrier permeability measurements (derived transfer coefficient \[Ktrans\]) of a standard gadolinium (Gd) MRI contrast agent at 3T and 7T using dynamic contrast enhancement (DCE) MRI. II. To compare dynamic susceptibility contrast (DSC) based perfusion measures at 3T and 7T. SECONDARY OBJECTIVES: I. To describe the blood brain barrier permeability to ferumoxytol (ferumoxytol non-stoichiometric magnetite) and to a standard gadolinium-based MRI contrast agent using signal intensity changes as described above. II. To describe cerebral blood volume (CBV) measurements obtained using a standard gadolinium MRI contrast agent and ferumoxytol. III. To evaluate tumor microvascularity on susceptibility-weighted images (SWI). IV. To describe the microscopic distribution of ferumoxytol particles in tissue removed from subjects undergoing surgery. OUTLINE: Patients are assigned to 3T or 7T magnet within the subgroups. Patients receive gadolinium intravenously (IV) on day 1 and ferumoxytol non-stoichiometric magnetite IV on day 2. Patients undergo anatomical MRI sequences with 3T or 7T at baseline and on days 1-3. Patients also undergo DSC MRI and DCE MRI on days 1-2. Day 1 and day 2 imaging sessions may be separated by up to 7 days. After completion of study, patients are followed up at approximately 4-6 weeks.
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: ALL
Healthy Volunteers: No
OHSU Knight Cancer Institute, Portland, Oregon, United States
Name: Edward Neuwelt
Affiliation: OHSU Knight Cancer Institute
Role: PRINCIPAL_INVESTIGATOR