No Evidence for Impairment of Venous Hemodynamics in Children or Young Adults with Pediatric-Onset Multiple Sclerosis

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

From the Departments of Diagnostic Imaging (S.L., J.T.), Medical Biophysics (C.K.M., K.C.), and Neuroscience and Mental Health (S.K., B.B.), The Hospital for Sick Children and Research Institute, University of Toronto, Ontario, Canada; McConnell Brain Imaging Center (D.L.A.), McGill University, Montreal, Quebec, Canada; Departments of Internal Medicine (Neurology) and Community Health Sciences (R.A.M.), University of Manitoba, Winnipeg, Manitoba, Canada; and Department of Neurology (B.B.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.