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BibTeX
Magnetization transfer (MT) asymmetry around the water resonance in human cervical spinal cord
Journal of magnetic resonance imaging, 2009-03, Vol.29 (3), p.523-528
Ng, Man-Cheuk
Hua, Jun
Hu, Yong
Luk, Keith D.
Lam, Edmund Y.
2009
Details
Autor(en) / Beteiligte
Ng, Man-Cheuk
Hua, Jun
Hu, Yong
Luk, Keith D.
Lam, Edmund Y.
Titel
Magnetization transfer (MT) asymmetry around the water resonance in human cervical spinal cord
Ist Teil von
Journal of magnetic resonance imaging, 2009-03, Vol.29 (3), p.523-528
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2009
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Purpose To demonstrate the presence of magnetization transfer (MT) asymmetry in human cervical spinal cord due to the interaction between bulk water and semisolid macromolecules (conventional MT), and the chemical exchange dependent saturation transfer (CEST) effect. Materials and Methods MT asymmetry in the cervical spinal cord (C3/C4–C5) was investigated in 14 healthy male subjects with a 3T magnetic resonance (MR) system. Both spin‐echo (SE) and gradient‐echo (GE) echo‐planar imaging (EPI) sequences, with low‐power off‐resonance radiofrequency irradiation at different frequency offsets, were used. Results Our results show that the z‐spectrum in gray/white matter (GM/WM) is asymmetrical about the water resonance frequency in both SE‐EPI and GE‐EPI, with a more significant saturation effect at the lower frequencies (negative frequency offset) far away from water and at the higher frequencies (positive offset) close to water. These are attributed mainly to the conventional MT and CEST effects respectively. Furthermore, the amplitude of MT asymmetry is larger in the SE‐EPI sequence than in the GE‐EPI sequence in the frequency range of amide protons. Conclusion Our results demonstrate the presence of MT asymmetry in human cervical spinal cord, which is consistent with the ones reported in the brain. J. Magn. Reson. Imaging 2009;29:523–528. © 2009 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 1053-1807
eISSN: 1522-2586
DOI: 10.1002/jmri.21610
Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4485611
Format
–
Schlagworte
Adult
,
APT
,
asymmetry
,
Cervical Vertebrae - anatomy & histology
,
CEST
,
Humans
,
Image Processing, Computer-Assisted - methods
,
Magnetic Resonance Imaging - methods
,
magnetization transfer
,
Male
,
Reference Values
,
spinal cord
,
Spinal Cord - anatomy & histology
,
Water
,
Young Adult
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