[1] Univ Klinikum Tubingen, Diagnost & Intervent Radiol, Hoppe Seyler Str 3, D-72076 Tubingen, Germany
[2] Univ Klinkum Tubingen, Inst Pathol & Neuropathol, Tubingen, Germany
[3] NYU, Radiol, Med Ctr, New York, NY USA
[4] RNR Radiol & Neuroradiol Glattzentrum, Radiol, Wallisellen, Switzerland