[1] Department of Radiology,
[2] Karl-Franzens Medical School and University Hospital,undefined
[3] Auenbruggerplatz 9,undefined
[4] A-8036 Graz,undefined
[5] Austria,undefined
[6] Fax: + 43-3 16-3 85 38 51,undefined
[7] Institute of Pathology,undefined
[8] Karl-Franzens Medical School and University Hospital,undefined
[9] Graz,undefined
[10] Austria,undefined
[11] Department of Neurosurgery,undefined
[12] Karl-Franzens Medical School and University Hospital,undefined
[13] Graz,undefined
[14] Austria,undefined