What Does the Boxed Warning Tell Us? Safe Practice of Using Ferumoxytol as an MRI Contrast Agent

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.

From the Departments of Radiology (C.G.V., J.P.N.), Neurology (C.G.V., G.B.T., J.P.N., J.F., P.A., E.A.N.), Medical Informatics and Clinical Epidemiology (R.F.), and Neurosurgery (E.A.N.) and School of Public Health (R.F.), Oregon Health & Science University, Portland, Oregon; and Portland Veterans Affairs Medical Center (E.A.N.), Portland, Oregon.