R
R. de Graaf
Researcher at Utrecht University
Publications - 180
Citations - 14811
R. de Graaf is an academic researcher from Utrecht University. The author has contributed to research in topics: Population & Mental health. The author has an hindex of 55, co-authored 164 publications receiving 13165 citations. Previous affiliations of R. de Graaf include Maastricht University Medical Centre & Maastricht University.
Papers
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Journal ArticleDOI
B1-Insensitive, Single-Shot Localization and Water Suppression
TL;DR: Computer simulations based on the Bloch equations, experimental images of the localized volume, and in vivo 1H spectroscopy experiments demonstrate the excellent spatial localization and water suppression.
Journal ArticleDOI
Cerebral ischemia and white matter edema in experimental hydrocephalus: a combined in vivo MRI and MRS study.
K.P.J. Braun,Rick M. Dijkhuizen,R. de Graaf,Klaas Nicolay,W. P. Vandertop,Rob H. J. M. Gooskens,Kees A. F. Tulleken +6 more
TL;DR: Phosphocreatine (PCr)/inorganic phosphate (Pi) ratios in hydrocephalic animals were decreased compared to controls, and lactate was detected during the acute and chronic stages of hydrocephalus.
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Sexual minority status and psychotic symptoms: findings from the Netherlands Mental Health Survey and Incidence Studies (NEMESIS)
Martin Gevonden,Jean-Paul Selten,Inez Myin-Germeys,R. de Graaf,M. ten Have,S. van Dorsselaer,J. van Os,Wim Veling +7 more
TL;DR: The finding that LGB orientation is associated with psychotic symptoms adds to the growing body of literature linking minority status with psychosis and other mental health problems, and suggests that exposure to minority stress represents an important mechanism.
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Subthreshold symptoms and obsessive-compulsive disorder: evaluating the diagnostic threshold
TL;DR: In this article, the authors compared subjects with obsessive and/or compulsive symptoms who did not meet all criteria for obsessive-compulsive disorder (OCD) (subthreshold subjects) to subjects with full-blown OCD and also to subjects without obsessions or compulsions.
Journal ArticleDOI
Adiabatic water suppression using frequency selective excitation.
R. de Graaf,Klaas Nicolay +1 more
TL;DR: A new method for B1‐insensitive water suppression using adiabatic RF pulses is described, which was evalu ated by simulations based on the Bloch equations, in vitro experiments and an in vivo verification on neonatal and adult rat brain.