Screening CT of the Brain Determined by CD4 Count in HIV-Positive Patients Presenting with Headache

aFrom the Mallinckrodt Institute of Radiology (C.B.G., F.J.W., T.K.P.), Washington University Medical Center, St. Louis, MO, and the Departments of Radiology (C.B.G., W.R.K.S.) and Internal Medicine, Infectious Diseases (E.J.F.), Medical College of Virginia/Virginia Commonwealth University, Richmond, VA.

aFrom the Mallinckrodt Institute of Radiology (C.B.G., F.J.W., T.K.P.), Washington University Medical Center, St. Louis, MO, and the Departments of Radiology (C.B.G., W.R.K.S.) and Internal Medicine, Infectious Diseases (E.J.F.), Medical College of Virginia/Virginia Commonwealth University, Richmond, VA.

aFrom the Mallinckrodt Institute of Radiology (C.B.G., F.J.W., T.K.P.), Washington University Medical Center, St. Louis, MO, and the Departments of Radiology (C.B.G., W.R.K.S.) and Internal Medicine, Infectious Diseases (E.J.F.), Medical College of Virginia/Virginia Commonwealth University, Richmond, VA.

aFrom the Mallinckrodt Institute of Radiology (C.B.G., F.J.W., T.K.P.), Washington University Medical Center, St. Louis, MO, and the Departments of Radiology (C.B.G., W.R.K.S.) and Internal Medicine, Infectious Diseases (E.J.F.), Medical College of Virginia/Virginia Commonwealth University, Richmond, VA.

aFrom the Mallinckrodt Institute of Radiology (C.B.G., F.J.W., T.K.P.), Washington University Medical Center, St. Louis, MO, and the Departments of Radiology (C.B.G., W.R.K.S.) and Internal Medicine, Infectious Diseases (E.J.F.), Medical College of Virginia/Virginia Commonwealth University, Richmond, VA.