Effect of Amplitude Modulation on Selective Excitation in NMR Imaging
- 1 December 1983
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Medical Imaging
- Vol. 2 (4) , 169-175
- https://doi.org/10.1109/TMI.1983.4307636
Abstract
If NMR imaging uses selective excitation, then it has to do it correctly as it affects the image resolution. We have related the properties of the selected slice, such as its width, its rate of attenuation, and its side lobes to the amplitude modulation of the radio frequency pulse. An interesting observation was that multiplying sinc(t) function by a triangle can give better results than multiplying it with a Gauss function. We have used computer simulation and tried to emphasize the qualitative relationship between the properties. We conclude with some practical requirements and show the need of a numerical design procedure if the slice properties have to be optimized.Keywords
This publication has 3 references indexed in Scilit:
- Computer simulation of selective excitation in n.m.r. imagingPhilosophical Transactions of the Royal Society of London. B, Biological Sciences, 1980
- Selective pulses in NMR imaging: A reply to criticismJournal of Magnetic Resonance (1969), 1979
- Three-dimensional NMR imaging using selective excitationJournal of Physics E: Scientific Instruments, 1978