Random noise selective excitation pulses.
Several methods for the spatial localization of NMR signals from well-defined regions of tissue within extended specimens have been proposed. Most of these techniques are prone to signal error which can arise from large volumes of sample that surround the region of interest. These errors can theoretically be reduced by several orders of magnitude by the application of a radiofrequency prepulse. The pulse acts to randomize the unwanted spin magnetization prior to the application of a spatial localization technique.
Ordidge
R J
RJ
Department of Physics, University of Nottingham, University Park, England.
D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D011846:Radio Waves; D013113:Spin Labels
D013113:Spin Labels