"Shim pulses" for NMR spectroscopy and imaging

Daniel Topgaard; RW Martin; D Sakellariou; CA Meriles; A Pines

doi:10.1073/pnas.0408296102

"Shim pulses" for NMR spectroscopy and imaging

Daniel Topgaard, RW Martin, D Sakellariou, CA Meriles, A Pines

University of California, Berkeley

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

Sammanfattning

A way to use adiabatic radiofrequency pulses and modulated magnetic-field gradient pulses, together constituting a "shim pulse," for NMR spectroscopy and imaging is demonstrated. These pulses capitalize on phase shifts derived from probe gradient coils to compensate for nonlinear intrinsic main magnetic field homogeneity for spectroscopy, as well as for deviations from linear gradients for imaging. This approach opens up the possibility of exploiting cheaper, less-than-perfect magnets and gradient coils for NMR applications.

Originalspråk	engelska
Sidor (från-till)	17576-17581
Tidskrift	Proceedings of the National Academy of Sciences
Volym	101
Nummer	51
DOI	https://doi.org/10.1073/pnas.0408296102
Status	Published - 2004
Externt publicerad	Ja

Ämnesklassifikation (UKÄ)

Fysikalisk kemi (Här ingår: Yt- och kolloidkemi)

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10.1073/pnas.0408296102

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title = "{"}Shim pulses{"} for NMR spectroscopy and imaging",

abstract = "A way to use adiabatic radiofrequency pulses and modulated magnetic-field gradient pulses, together constituting a {"}shim pulse,{"} for NMR spectroscopy and imaging is demonstrated. These pulses capitalize on phase shifts derived from probe gradient coils to compensate for nonlinear intrinsic main magnetic field homogeneity for spectroscopy, as well as for deviations from linear gradients for imaging. This approach opens up the possibility of exploiting cheaper, less-than-perfect magnets and gradient coils for NMR applications.",

keywords = "numerical, pulse sequence, MRI, adiabatic, modulated gradient, optimization",

author = "Daniel Topgaard and RW Martin and D Sakellariou and CA Meriles and A Pines",

year = "2004",

doi = "10.1073/pnas.0408296102",

language = "English",

volume = "101",

pages = "17576--17581",

journal = "Proceedings of the National Academy of Sciences",

issn = "1091-6490",

publisher = "National Academy of Sciences",

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TY - JOUR

T1 - "Shim pulses" for NMR spectroscopy and imaging

AU - Topgaard, Daniel

AU - Martin, RW

AU - Sakellariou, D

AU - Meriles, CA

AU - Pines, A

PY - 2004

Y1 - 2004

N2 - A way to use adiabatic radiofrequency pulses and modulated magnetic-field gradient pulses, together constituting a "shim pulse," for NMR spectroscopy and imaging is demonstrated. These pulses capitalize on phase shifts derived from probe gradient coils to compensate for nonlinear intrinsic main magnetic field homogeneity for spectroscopy, as well as for deviations from linear gradients for imaging. This approach opens up the possibility of exploiting cheaper, less-than-perfect magnets and gradient coils for NMR applications.

AB - A way to use adiabatic radiofrequency pulses and modulated magnetic-field gradient pulses, together constituting a "shim pulse," for NMR spectroscopy and imaging is demonstrated. These pulses capitalize on phase shifts derived from probe gradient coils to compensate for nonlinear intrinsic main magnetic field homogeneity for spectroscopy, as well as for deviations from linear gradients for imaging. This approach opens up the possibility of exploiting cheaper, less-than-perfect magnets and gradient coils for NMR applications.

KW - numerical

KW - pulse sequence

KW - MRI

KW - adiabatic

KW - modulated gradient

KW - optimization

U2 - 10.1073/pnas.0408296102

DO - 10.1073/pnas.0408296102

M3 - Article

SN - 1091-6490

VL - 101

SP - 17576

EP - 17581

JO - Proceedings of the National Academy of Sciences

JF - Proceedings of the National Academy of Sciences

IS - 51

ER -

"Shim pulses" for NMR spectroscopy and imaging

Sammanfattning

Ämnesklassifikation (UKÄ)

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