[1] Helmholtz Zentrum Dresden Rossendorf, PET Ctr, Dresden, Germany
[2] Katholieke Univ Leuven, Med Imaging Res Ctr, Leuven, Belgium
[3] Tech Univ Dresden, Univ Hosp Carl Gustav Carus, Dept Nucl Med, D-01062 Dresden, Germany
[4] Tech Univ Dresden, Univ Hosp Carl Gustav Carus, Dept Radiol, D-01062 Dresden, Germany