Spatially varying steady state longitudinal magnetization in distant dipolar field-based sequences

C. A. Corum; A. F. Gmitro

doi:10.1016/j.jmr.2004.08.005

Spatially varying steady state longitudinal magnetization in distant dipolar field-based sequences

C. A. Corum, A. F. Gmitro

Radiology

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

8 Scopus citations

Abstract

Sequences based on the distant dipolar field (DDF) have shown great promise for novel spectroscopy and imaging. Unless spatial variation in the longitudinal magnetization, M_z(s), is eliminated by relaxation, diffusion, or spoiling techniques by the end of a single repetition, unexpected results can be obtained due to spatial harmonics in the steady state M _z^ss(s) profile. This is true even in a homogeneous single-component sample. We have developed an analytical expression for the M_z^ss(s) profile that occurs in DDF sequences when smearing by diffusion is negligible in the TR period. The expression has been verified by directly imaging the M_z^ss(s) profile after establishing the steady state.

Original language	English (US)
Pages (from-to)	131-134
Number of pages	4
Journal	Journal of Magnetic Resonance
Volume	171
Issue number	1
DOIs	https://doi.org/10.1016/j.jmr.2004.08.005
State	Published - Nov 2004

Bibliographical note

Funding Information:
This work and preparation leading to it was carried out under the support of the Flinn Foundation, a State of Arizona Prop. 301 Imaging Fellowship, and NIH 5R24CA083148-05.

Keywords

DDF
Distant dipolar field
IMQC
Intermolecular multiple quantum coherence
Steady state longitudinal magnetization

Access

10.1016/j.jmr.2004.08.005

OpenUrl availability

Full text

Cite this

@article{323ae239800c425e8b4b951c0fca7e9b,

title = "Spatially varying steady state longitudinal magnetization in distant dipolar field-based sequences",

abstract = "Sequences based on the distant dipolar field (DDF) have shown great promise for novel spectroscopy and imaging. Unless spatial variation in the longitudinal magnetization, Mz(s), is eliminated by relaxation, diffusion, or spoiling techniques by the end of a single repetition, unexpected results can be obtained due to spatial harmonics in the steady state M zss(s) profile. This is true even in a homogeneous single-component sample. We have developed an analytical expression for the Mzss(s) profile that occurs in DDF sequences when smearing by diffusion is negligible in the TR period. The expression has been verified by directly imaging the Mzss(s) profile after establishing the steady state.",

keywords = "DDF, Distant dipolar field, IMQC, Intermolecular multiple quantum coherence, Steady state longitudinal magnetization",

author = "Corum, {C. A.} and Gmitro, {A. F.}",

note = "Funding Information: This work and preparation leading to it was carried out under the support of the Flinn Foundation, a State of Arizona Prop. 301 Imaging Fellowship, and NIH 5R24CA083148-05.",

year = "2004",

month = nov,

doi = "10.1016/j.jmr.2004.08.005",

language = "English (US)",

volume = "171",

pages = "131--134",

journal = "Journal of Magnetic Resonance",

issn = "1090-7807",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Spatially varying steady state longitudinal magnetization in distant dipolar field-based sequences

AU - Corum, C. A.

AU - Gmitro, A. F.

N1 - Funding Information: This work and preparation leading to it was carried out under the support of the Flinn Foundation, a State of Arizona Prop. 301 Imaging Fellowship, and NIH 5R24CA083148-05.

PY - 2004/11

Y1 - 2004/11

N2 - Sequences based on the distant dipolar field (DDF) have shown great promise for novel spectroscopy and imaging. Unless spatial variation in the longitudinal magnetization, Mz(s), is eliminated by relaxation, diffusion, or spoiling techniques by the end of a single repetition, unexpected results can be obtained due to spatial harmonics in the steady state M zss(s) profile. This is true even in a homogeneous single-component sample. We have developed an analytical expression for the Mzss(s) profile that occurs in DDF sequences when smearing by diffusion is negligible in the TR period. The expression has been verified by directly imaging the Mzss(s) profile after establishing the steady state.

AB - Sequences based on the distant dipolar field (DDF) have shown great promise for novel spectroscopy and imaging. Unless spatial variation in the longitudinal magnetization, Mz(s), is eliminated by relaxation, diffusion, or spoiling techniques by the end of a single repetition, unexpected results can be obtained due to spatial harmonics in the steady state M zss(s) profile. This is true even in a homogeneous single-component sample. We have developed an analytical expression for the Mzss(s) profile that occurs in DDF sequences when smearing by diffusion is negligible in the TR period. The expression has been verified by directly imaging the Mzss(s) profile after establishing the steady state.

KW - DDF

KW - Distant dipolar field

KW - IMQC

KW - Intermolecular multiple quantum coherence

KW - Steady state longitudinal magnetization

UR - http://www.scopus.com/inward/record.url?scp=7544230837&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=7544230837&partnerID=8YFLogxK

U2 - 10.1016/j.jmr.2004.08.005

DO - 10.1016/j.jmr.2004.08.005

M3 - Article

C2 - 15504691

AN - SCOPUS:7544230837

SN - 1090-7807

VL - 171

SP - 131

EP - 134

JO - Journal of Magnetic Resonance

JF - Journal of Magnetic Resonance

IS - 1

ER -

Spatially varying steady state longitudinal magnetization in distant dipolar field-based sequences

Abstract

Bibliographical note

Keywords

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this