[1] Univ Hosp Geneva, DISIM, Dept Neuroradiol, CH-1211 Geneva 04, Switzerland
[2] Univ Hosp Geneva, Dept Nucl Med, CH-1211 Geneva 04, Switzerland
[3] Univ Hosp Geneva, Dept Neurosurg, CH-1211 Geneva 04, Switzerland
[4] Waldau Univ Hosp, Dept Psychiat, CH-3000 Bern 07, Switzerland
[5] Univ Hosp Geneva, Dept Radiol, CH-1211 Geneva 04, Switzerland
[6] Univ Hosp Geneva, Dept Neurol, CH-1211 Geneva 04, Switzerland