Zobrazeno 1 - 10
of 10
pro vyhledávání: '"J. H. N. Creyghton"'
Publikováno v:
Magnetic Resonance Materials in Biology, Physics, and Medicine. 6:37-43
After a bolus injection of Gd-DTPA, a fast tracer uptake in rat brain tumours was already observed during the tracer bolus passage. For the quantification of the uptake rate constant, pharmacokinetic models are commonly used. For a good quantificatio
Autor:
G. Quack, R.A.F.M. Chamuleau, J. H. N. Creyghton, J. Slotboom, B.A.P.M. Vogels, J.G. Dehaan, W.M.M.J. Bovee
Publikováno v:
Journal of Magnetic Resonance, Series B. 105:147-156
Using the SADLOVE (single-shot adiabatic localized volume excitation) localization technique with reduced specific absorption rate phase-compensated 2π pulses for localization, in vivo rat brain spectra were obtained in order to study the possible b
Publikováno v:
Journal of Magnetic Resonance, Series B. 101:87-90
Publikováno v:
Magnetic resonance in medicine. 30(6)
Spectrometers make use of D/A converters to generate RF and gradient shapes. This paper examines by exact simulations the time and amplitude digitization effects, inherent to the use of D/A converters, on the performance of amplitude modulated (AM) f
Publikováno v:
Magnetic resonance in medicine. 29(4)
It is shown that the signal of intracellular and extracellular sodium of red blood cells can be separated by a difference in diffusion. Comparison with proton diffusion experiments conducted in parallel showed that this difference was caused by restr
Autor:
J. Smidt, M. A. Moerland, Robert A. F. M. Chamuleau, I. De Nie, O. R. Van Der Lende, J. H. N. Creyghton
Publikováno v:
Hepatology (Baltimore, Md.), 8(2), 217-221. John Wiley and Sons Ltd
During the development of liver fibrosis in rats by an individual dose-titrated CCl4 administration, hepatic proton spin-lattice relaxation time (T1) has been measured in vivo every 2 weeks for 8 weeks. Liver content of collagen, triglycerides and wa
Publikováno v:
Journal of Physics C: Solid State Physics. 11:L223-L226
It is shown that in samples submitted to a magnetic field gradient, after a spin-lock experiment, where a pi /2 RF pulse is followed by a lock field of amplitude omega 1, only those spins are measured with off-set frequencies close to omega 1. In thi
Publikováno v:
Magnetic Resonance in Medicine. 2:86-89
A parametric spectral analysis based on linear prediction and singular value decomposition has been applied to the 31P FID of a tumor implanted in a mouse. It is found that a number of complications that may arise in in vivo FFT NMR can be circumvent
Autor:
K. H. J. Buschow, J. H. N. Creyghton
Publikováno v:
The Journal of Chemical Physics. 57:3910-3914
The magnetic properties and the lattice constants of the rare earth tetraborides RB4 have been determined. The compound PrB4 is ferromagnetic. The compounds in which R represents Nd, Sm, Gd, Tb, Dy, and Ho are antiferromagnetic while ErB4 and YbB4 sh
Autor:
L. Smid, J. Lindeman, R. A. Wind, K. W. Getreuer, H. Posthuma, J. Smidt, Steven Lobregt, W. M. M. J. Bovée, J. H. N. Creyghton, D. Korbee
Publikováno v:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences. 289(1037)
It is found that fat and non-fatty tissue in dissected samples of the mamma differ in their T 1 / T 2 ratios. This opens the possibility of locating tumours by n.m.r. imaging, because they have a lower fat content than their surroundings. By means of