Improvement of INADEQUATE using compensated delays and pulses

A. M. Torres; T. T. Nakashima; R. E.D. McClung; D. R. Muhandiram

doi:10.1016/0022-2364(92)90158-4

Improvement of INADEQUATE using compensated delays and pulses

A. M. Torres, T. T. Nakashima, R. E.D. McClung, D. R. Muhandiram

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

A J-compensated homonuclear spin-echo sequence is developed from the 90_α^o180_α+2π/3^o composite pulse using a product-operator analogy between homonuclear spin-spin coupling and RF pulses, and a J-compensated INADEQUATE sequence is constructed using this spin-echo sequence. Detailed study of the efficiencies of various composite pulses in minimizing resonance-offset effects in INADEQUATE experiments showed that five-step symmetric phase-altemating composite pulses are most effective. The sequences C-INADEQUATE, which incorporates composite pulses, and JC-INADEQUATE, which includes both offset and J-compensation, are shown to have a sensitivity significantly higher than that of conventional INADEQUATE.

Original language	English
Pages (from-to)	99-117
Number of pages	19
Journal	Journal of Magnetic Resonance (1969)
Volume	99
Issue number	1
DOIs	https://doi.org/10.1016/0022-2364(92)90158-4
Publication status	Published - Aug 1992
Externally published	Yes

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title = "Improvement of INADEQUATE using compensated delays and pulses",

abstract = "A J-compensated homonuclear spin-echo sequence is developed from the 90αo180α+2π/3o composite pulse using a product-operator analogy between homonuclear spin-spin coupling and RF pulses, and a J-compensated INADEQUATE sequence is constructed using this spin-echo sequence. Detailed study of the efficiencies of various composite pulses in minimizing resonance-offset effects in INADEQUATE experiments showed that five-step symmetric phase-altemating composite pulses are most effective. The sequences C-INADEQUATE, which incorporates composite pulses, and JC-INADEQUATE, which includes both offset and J-compensation, are shown to have a sensitivity significantly higher than that of conventional INADEQUATE.",

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year = "1992",

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AU - Torres, A. M.

AU - Nakashima, T. T.

AU - McClung, R. E.D.

AU - Muhandiram, D. R.

PY - 1992/8

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N2 - A J-compensated homonuclear spin-echo sequence is developed from the 90αo180α+2π/3o composite pulse using a product-operator analogy between homonuclear spin-spin coupling and RF pulses, and a J-compensated INADEQUATE sequence is constructed using this spin-echo sequence. Detailed study of the efficiencies of various composite pulses in minimizing resonance-offset effects in INADEQUATE experiments showed that five-step symmetric phase-altemating composite pulses are most effective. The sequences C-INADEQUATE, which incorporates composite pulses, and JC-INADEQUATE, which includes both offset and J-compensation, are shown to have a sensitivity significantly higher than that of conventional INADEQUATE.

AB - A J-compensated homonuclear spin-echo sequence is developed from the 90αo180α+2π/3o composite pulse using a product-operator analogy between homonuclear spin-spin coupling and RF pulses, and a J-compensated INADEQUATE sequence is constructed using this spin-echo sequence. Detailed study of the efficiencies of various composite pulses in minimizing resonance-offset effects in INADEQUATE experiments showed that five-step symmetric phase-altemating composite pulses are most effective. The sequences C-INADEQUATE, which incorporates composite pulses, and JC-INADEQUATE, which includes both offset and J-compensation, are shown to have a sensitivity significantly higher than that of conventional INADEQUATE.

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Improvement of INADEQUATE using compensated delays and pulses

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