• humans
  • Conclusion It is feasible to construct a double-quadrature 13C-1H surface coil for proton decoupled sensitivity enhanced 13C-NMR spectroscopy in humans at 7T. (epfl.ch)
  • GABA function can also be investigated indirectly in humans through the use of non-invasive transcranial magnetic stimulation (TMS) techniques that can be used to measure cortical excitability and GABA-mediated physiological inhibition. (ox.ac.uk)
  • Although proton magnetic resonance spectroscopy (1H-MRS) has been used with success to quantify vertebral MAT in humans, it is difficult to employ in laboratory animals. (wikipedia.org)
  • voxels
  • Multi-voxel spectroscopy provides information about group of voxels and data can be presented in 2D or 3D images, but it requires longer acquisition times and therefore temporal resolution is decreased. (wikipedia.org)
  • ratio
  • Moreover, our results strongly indicate that the resonance ratio of inositol (at 4.05 ppm) to creatine may help distinguish tumor type. (aacrjournals.org)
  • The signal-to-noise ratio (SNR) was measured on the glycogen and glucose resonances by 13C-MRS in vitro, compared with that obtained with a linear-13C/quadrature-1H coil, and validated by 13C-MRS in vivo in the human calf at 7T. (epfl.ch)
  • research
  • He was known for his studies on quantum-mechanical interpretation of magnetic resonance data and his contributions in developing IIT Kanpur into a Centre of Excellence in academic research in basic sciences. (wikipedia.org)
  • He organized an active research school at the Indian Institute of Technology, Kanpur featuring scholars from physics and chemistry departments which worked on the theoretical and experimental aspects of magnetic resonance. (wikipedia.org)
  • frequency
  • Purpose Carbon-13 magnetic resonance spectroscopy (13C-MRS) is challenging because of the inherent low sensitivity of 13C detection and the need for radiofrequency transmission at the 1H frequency while receiving the 13C signal, the latter requiring electrical decoupling of the 13C and 1H radiofrequency channels. (epfl.ch)
  • The values in the phase images are constrained from -π to π so if the value goes above π it wraps to -π, inhomogeneities in the magnetic field cause low frequency background gradients. (wikipedia.org)
  • medical
  • Magnetic resonance spectroscopy (MRS) is a non-invasive and non-ionizing technique that is well described in the human medical literature and is most frequently used to evaluate the metabolic activity of tissues with questionable malignant transformation. (illinois.edu)
  • small
  • Single Voxel Spectroscopy (SVS): has a minimum spatial resolution of approximately 1 cm3, and has the cleanest spectrum free from unwanted artefacts due to the small acquired volume. (wikipedia.org)
  • Therefore
  • Therefore this paper is of limited scope, giving an overview of technical issues that are important to clinical proton MRS, discussing some common clinical MRS problems, and suggest- ing how they might be resolved. (aapm.org)
  • common
  • Some fundamental issues covered in this paper are common to many forms of magnetic resonance spectroscopy and are written as an introduction for the reader to these methods. (aapm.org)
  • The nucleus of deuterium, called a deuteron, contains one proton and one neutron, whereas the far more common protium has no neutron in the nucleus. (wikipedia.org)
  • field
  • These steps include: Shimming the magnetic field: this step is taken to correct for the inhomogeneity of the magnetic field by tuning different pulses in the x, y, and z directions. (wikipedia.org)