Fast Broadband Inversion by Adiabatic Pulses

Tsang Lin Hwang; Peter C.M. Van Zijl; Michael Garwood

doi:10.1006/jmre.1998.1441

Fast Broadband Inversion by Adiabatic Pulses

Tsang Lin Hwang, Peter C.M. Van Zijl, Michael Garwood

Center for Magnetic Resonance Research

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

117 Scopus citations

Abstract

Despite the advantages of compensation for resonance offset and B ₁ inhomogeneity, adiabatic pulses are not yet in general use in high-resolution NMR, often because of the conception that these pulses require longer time or increased power to perform. We show that adiabatic pulses with tangential frequency sweeps and other frequency-modulation functions can be optimized to accomplish ¹³ C and ¹ H broadband inversion using pulse lengths of 192 and 64 μs, respectively, at B ₁ strengths available with modern high-resolution probes.

Original language	English (US)
Pages (from-to)	200-203
Number of pages	4
Journal	Journal of Magnetic Resonance
Volume	133
Issue number	1
DOIs	https://doi.org/10.1006/jmre.1998.1441
State	Published - Jul 1998

Bibliographical note

Funding Information:
This research was supported by NIH Grants RR11115 (PvZ) and RR08079 (MG), and, in part, via a subcontract of NIH STTR Grant GM55441 to Adiabatics, Inc., of which M.G. and P.v.Z. are officers. The terms of this agreement have been reviewed and approved by the Johns Hopkins University in accordance with its conflict of interest policies.

Keywords

Adiabatic pulses
Fast broadband inversion
Tangential frequency sweep

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abstract = " Despite the advantages of compensation for resonance offset and B 1 inhomogeneity, adiabatic pulses are not yet in general use in high-resolution NMR, often because of the conception that these pulses require longer time or increased power to perform. We show that adiabatic pulses with tangential frequency sweeps and other frequency-modulation functions can be optimized to accomplish 13 C and 1 H broadband inversion using pulse lengths of 192 and 64 μs, respectively, at B 1 strengths available with modern high-resolution probes.",

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AU - Van Zijl, Peter C.M.

AU - Garwood, Michael

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PY - 1998/7

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N2 - Despite the advantages of compensation for resonance offset and B 1 inhomogeneity, adiabatic pulses are not yet in general use in high-resolution NMR, often because of the conception that these pulses require longer time or increased power to perform. We show that adiabatic pulses with tangential frequency sweeps and other frequency-modulation functions can be optimized to accomplish 13 C and 1 H broadband inversion using pulse lengths of 192 and 64 μs, respectively, at B 1 strengths available with modern high-resolution probes.

AB - Despite the advantages of compensation for resonance offset and B 1 inhomogeneity, adiabatic pulses are not yet in general use in high-resolution NMR, often because of the conception that these pulses require longer time or increased power to perform. We show that adiabatic pulses with tangential frequency sweeps and other frequency-modulation functions can be optimized to accomplish 13 C and 1 H broadband inversion using pulse lengths of 192 and 64 μs, respectively, at B 1 strengths available with modern high-resolution probes.

KW - Adiabatic pulses

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KW - Tangential frequency sweep

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Fast Broadband Inversion by Adiabatic Pulses

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