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  • magnetic
  • Because the magnetic label decays with the blood T1 (typically between 1.2 and 1.8 s at clinical magnetic field strengths), the ASL signal will not accurately represent CBF in these regions under normal operating conditions. (ahajournals.org)
  • The present invention relates to a method and system for conducting a magnetic resonance fluid flow study by conducting a labeling procedure and a control procedure and combining datasets from those procedures to create a dataset for the fluid flow study. (freepatentsonline.com)
  • An amplitude modulated magnetic field gradient and amplitude modulated RF irradiation may be applied during a labeling procedure. (freepatentsonline.com)
  • Important advantages of this technique are its noninvasiveness (since magnetically labeled protons in blood are used as a tracer) and short acquisition time at high magnetic field strengths (3.0 T) [ 18 ]. (hindawi.com)
  • To determine whether arterial spin-labeling (ASL) magnetic resonance (MR) imaging findings at baseline and early during antiangiogenic therapy can predict later resistance to therapy. (nih.gov)
  • quantification
  • 16 ASL has distinct advantages in children because of lack of contrast requirement, high SNR, labeling efficiency, and the potential for CBF quantification. (ajnr.org)
  • conformational
  • The large computational effort associated with such modelling with molecular dynamics (MD) simulations can be avoided by a rotamer library approach based on a coarse-grained representation of the conformational space of the spin label . (rsc.org)
  • diffusible tracer
  • Although labeled arterial blood water is nominally a diffusible tracer, T1 relaxation is relatively short compared with transit time, and most labeled blood will relax during transit through capillaries, before exchange with brain tissue water. (ajnr.org)
  • moiety
  • The spin label moiety was attached to phenytoin either at position 3- N via a carbimidomethyl linkage (Compound II) or at a 4'-phenyl position via an amide linkage (Compounds III-V). Two of the phenyl labels (Compounds III and IV) differed only in the presence of a double bond in the pyrroline ring in Compound IV, and Compound V had the amide linkage reversed as compared with Compound III. (aspetjournals.org)
  • spectra
  • B ) Pressure dependence of the EPR spectra normalized to the same number of spins. (pnas.org)
  • behavior
  • Phase transitions and fatty acid spin label behavior in interdigitated lipid phases induced by glycerol and polymyxin. (biomedsearch.com)
  • In the present study we have investigated the phase behavior of PC and PG in the presence of glycerol and polymyxin by differential scanning calorimetry and the use of fatty acid spin labels. (biomedsearch.com)
  • spectrum
  • However, rotameric exchange of the spin label side chain can also give rise to multiple components in the EPR spectrum. (pnas.org)
  • relaxation
  • Owenius R, Eaton GR, Eaton SS (2005) Frequency (250 MHz to 9.2 GHz) and viscosity dependence of electron spin relaxation of triarylmethyl radicals at room temperature. (springer.com)
  • approach
  • Suggestions for the selection of labelling sites in proteins are given, limitations of the approach discussed, and requirements for further development are outlined. (rsc.org)