| Ultrashort TE T(1) ρ magic angle imaging. | |
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MedLine Citation:
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PMID: 22539354 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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An ultrashort TE T(1) ρ sequence was used to measure T(1) ρ of the goat posterior cruciate ligament (n = 1) and human Achilles tendon specimens (n = 6) at a series of angles relative to the B(0) field and spin-lock field strengths to investigate the contribution of dipole-dipole interaction to T(1) ρ relaxation. Preliminary results showed a significant magic angle effect. T(1) ρ of the posterior cruciate ligament increased from 6.9 ± 1.3 ms at 0° to 36 ± 5 ms at 55° and then gradually reduced to 12 ± 3 ms at 90°. Mean T(1) ρ of the Achilles tendon increased from 5.5 ± 2.2 ms at 0° to 40 ± 5 ms at 55°. T(1) ρ dispersion study showed a significant T(1) ρ increase from 2.3 ± 0.9 ms to 11 ± 3 ms at 0° as the spin-lock field strength increased from 150 Hz to 1 kHz, and from 30 ± 3 ms to 42 ± 4 ms at 55° as the spin-lock field strength increased from 100 to 500 Hz. These results suggest that dipolar interaction is the dominant T(1) ρ relaxation mechanism in tendons and ligaments. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc. |
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Authors:
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Jiang Du; Sheronda Statum; Richard Znamirowski; Graeme M Bydder; Christine B Chung |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-26 |
Journal Detail:
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Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: - ISSN: 1522-2594 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 Wiley Periodicals, Inc. |
Affiliation:
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Department of Radiology, University of California, San Diego, USA. jiangdu@ucsd.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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