Improved coronary MR angiography using wideband steady state free precession at 3 tesla with sub-millimeter resolution.

Improved coronary MR angiography using wideband steady state free precession at 3 tesla with sub-millimeter resolution.
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DOI:
10.1002/jmri.22150
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发表时间:
2010-05
影响因子:
4.4
通讯作者:
Nayak, Krishna S.
Nayak, Krishna S.
中科院分区:
医学2区
文献类型:
--
作者:
Lee, Hsu-Lei;Shankaranarayanan, Ajit;Pohost, Gerald M.;Nayak, Krishna S.

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To suppress off-resonance artifacts in coronary artery imaging at 3 Tesla, and therefore improve spatial resolution. Wideband SSFP sequences utilize an oscillating steady state to reduce banding artifacts. Coronary artery images were obtained at 3T using three-dimensional navigated gradient echo, balanced SSFP, and wideband SSFP sequences. The highest in-plane resolution of left coronary artery images was 0.68 mm in the frequency-encoding direction. Wideband SSFP produced an average SNR efficiency of 70% relative to conventional balanced SSFP and suppressed off-resonance artifacts. Wideband SSFP was found to be a promising approach for obtaining non-contrast, high-resolution coronary artery images at 3 Tesla with reliable image quality.
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