| Oxygen-enhanced lung magnetic resonance imaging: influence of inversion pulse slice selectivity on inversion recovery half-Fourier single-shot turbo spin-echo signal. | |
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MedLine Citation:
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PMID: 21607837 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this study was to evaluate in vivo the influence of inversion pulse slice selectivity on oxygen-enhanced magnetic resonance imaging (MRI). MATERIALS AND METHODS: Thirteen healthy volunteers were studied with a two-dimensional cardiac- and respiratory-gated adiabatic inversion-recovery half-Fourier single-shot turbo spin-echo (HASTE) sequence with either slice-selective or non-slice-selective inversion recovery (IR) pulse at inversion times increasing from 300 to 1400 ms. The signal-to-noise ratio (SNR) at every inversion time (TI), real signal difference (ΔSI), and relative enhancement ratio of lung parenchyma at TI ≥ 800 ms were statistically compared for oxygen-enhanced and non-oxygen-enhanced MR images with slice-selective or non-slice-selective IR pulses. RESULTS: The SNRs of acquisitions with slice-selective IR pulses were significantly higher than those of non-sliceselective IR pulses (P < 0.05). At TI 800 ms, the ΔSI of lung parenchyma on IR-HASTE images with slice-selective inversion pulse type was significantly higher than on that with the non-slice-selective type (P < 0.05). Relative enhancement ratios of the slice-selective IR pulses were significantly lower than those of non-slice-selective IR pulses at TIs between 800 and 1400 ms (P < 0.05). CONCLUSION: Slice selectivity of inversion pulse type affects oxygen-enhanced MRI in vivo. |
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Authors:
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Daisuke Takenaka; Michael Puderbach; Yoshiharu Ohno; Frank Risse; Sebastian Ley; Kazuro Sugimura; Hans-Ulrich Kauczor |
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Publication Detail:
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Type: Journal Article Date: 2011-05-24 |
Journal Detail:
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Title: Japanese journal of radiology Volume: 29 ISSN: 1867-108X ISO Abbreviation: Jpn J Radiol Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-05-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101490689 Medline TA: Jpn J Radiol Country: Japan |
Other Details:
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Languages: eng Pagination: 244-50 Citation Subset: IM |
Affiliation:
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Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan, daisuket@med.kobe-u.ac.jp. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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