[1] Departments of Radiology and Nuclear Medicine,
[2] Virchow-Klinikum,undefined
[3] Charité,undefined
[4] Humboldt-University,undefined
[5] Augustenburger Platz 1,undefined
[6] 13353 Berlin,undefined
[7] Germany e-mail: karl-titus.hoffmann@charite.de Tel.: +30 45 05 70 02 Fax: +30 45 05 79 01,undefined
[8] PET-Centre Berlin,undefined
[9] Virchow-Klinikum,undefined
[10] Charité,undefined
[11] Humboldt-University,undefined
[12] Berlin,undefined
[13] Germany,undefined
[14] Department of Neurosurgery,undefined
[15] Virchow-Klinikum,undefined
[16] Charité,undefined
[17] Humboldt-University,undefined
[18] Berlin,undefined
[19] Germany,undefined