MR imaging with phase encoding of intermolecular multiple quantum coherences.
Novel 2D and 3D pulse sequences producing images through the phase encoding of intermolecular multiple quantum coherences (i-MQCs) are presented. The signal acquired with these sequences is free from intermolecular zero quantum coherences (i-ZQCs) which are not phase encoded and additional phase cycling eliminates artifacts. Phase encoding during the n-quantum evolution period provides n times the resolution expected from equivalent phase encoding of the reconverted single quantum coherences. These sequences have potential applications for producing i-MQC images of biological tissues as well as nonbiological materials with substantial amounts of water.
Sendhil Velan
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S
Biological Imaging Center, 139-74 Beckman Institute, California Institute of Technology, Pasadena, California 91125, USA.
Narasimhan
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PT
Jacobs
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RE
D008279:Magnetic Resonance Imaging / Q000379:methods*; D008433:Mathematics; D011789:Quantum Theory