White matter abnormalities in patients with treated hyperphenylalaninaemia: Magnetic resonance relaxometry and proton spectroscopy findingsUlrich Bick, U. Wendel, Kurt Ullrich et al.|European Journal of Pediatrics|1993Cited by 111
Brain Imaging and Proton Magnetic Resonance Spectroscopy in Patients With PhenylketonuriaHarald E. Möller, Kurt Ullrich, J. Weglage et al.|PEDIATRICS|2003Cited by 48
Kinetics of phenylalanine transport at the human blood–brain barrier investigated in vivoHarald E. Möller, Kurt Ullrich, J. Weglage et al.|Brain Research|1997Cited by 47
White matter abnormalities in phenylketonuria: results of magnetic resonance measurementsKurt Ullrich, HG Koch, Harald E. Möller et al.|Acta Paediatrica|1994Cited by 45
Magnetic resonance imaging and proton spectroscopy in PKUKurt Ullrich, Alexander Ludolph, B. Fünders et al.|Max Planck Institute for Plasma Physics|1995Cited by 4