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Spectral Artifacts Resulting from Multiple-Quantum Coherence Transfers by Spin Decoupling during Acquisition
Affiliation:1. Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, South Korea;2. Department of Biology and Biological Engineering, Division of Industrial Biotechnology, Chalmers University of Technology, Gothenburg, Sweden;3. Department of Biomedical Engineering, Pukyong National University, Busan 48513, South Korea;1. School of Infrastructure, Indian Institute of Technology Bhubaneswar, India;2. School of Architecture and Interior Design, SRM Institute of Science and Technology, India;3. Department of Civil Engineering, KIET Group of Institutions, Delhi NCR, India;1. Pediatric Hematology Oncology & Bone Marrow Transplant Unit, Department of Pediatrics, Fortis Memorial Research Institute, Gurgaon, Haryana, India;2. Department of Dermatology, Fortis Memorial Research Institute, Gurgaon, India
Abstract:Off-resonance coherent decoupling of spin X in a heteronuclear SXN spin system can result in a multiplet with overlapping lines of spin Sand an overall shape similar to that of a doublet. Such lineshape distortions occur if certain multiple-spin coherences are present when the decoupler is switched on. The distortion could cause an apparent change in the multiplicity of an M + 1 multiplet of an SXNYM spin system when a selective decoupling of spins X is applied after a polarization transfer from spins X to spin S by INEPT or DEPT. Possibilities for suppressing the distortions are discussed.
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