11C-acetate positron emission tomography imaging and image fusion with computed tomography and magnetic resonance imaging in patients with recurrent prostate cancer: Wachter S, Tomek S, Kurtaran A, Wachter-Gerstner N, Djavan B, Becherer A, Mitterhauser M, Dobrozemsky G, Li S, Pötter R, Dudczak R, Kletter K, Departments of Nuclear Medicine, Radiotherapy, and Urology and Clinical Division of Oncology, Department of Medicine I, Hospital Pharmacy of the General Hospital of Vienna, Medical University of Vienna, Vienna, Austria