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Coronary wall MR Imaging in patients with rapid heart rates: a feasibility study of black-blood steady-state free precession (SSFP)

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机构: [1]Northwestern Univ, Dept Radiol, Chicago, IL 60611 USA; [2]Siemens Healthcare, Cardiovasc MR R&D, Chicago, IL 60611 USA; [3]Capital Med Univ, Beijing Anzhen Hosp, Dept Radiol, Beijing 100029, Peoples R China; [4]Cedars Sinai Med Ctr, 8700 Beverly Blvd, Los Angeles, CA 90048 USA
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关键词: Magnetic resonance imaging Coronary wall Fast heart rate

摘要:
We assessed the hypothesis that black-blood steady-state free precession (SSFP) would provide coronary wall images comparable to images from TSE and have better performance than TSE under conditions of fast heart rate. With IRB approval, thirty participants without a history of coronary artery disease (19 men, 11 women, 26-83 y/o) were scanned with a 1.5 T MR scanner. Cross-sectional black-blood images of the proximal portions of coronary arteries were acquired with a two-dimensional (2D), double inversion recovery (DIR) prepared TSE sequence and a 2D DIR SSFP sequence on the same planes. Image quality (ranked with a 4-point system, scored from 0 to 3), vessel wall area and thickness, signal-to-noise ratio (SNR) of the wall and contrast-to-noise ratio (CNR, wall to lumen) were compared between SSFP and TSE with SPSS software (v 13.0). Totally 28 scans were completed. For SSFP and TSE, there was no difference in image quality. SSFP had a higher SNR (23.7 +/- A 10.1 vs. 14.4 +/- A 5.2, P < 0.001) and wall-lumen CNR (8.8 +/- A 4.5 vs. 6.7 +/- A 3.2, P = 0.001). Good agreements between measured wall area (r = 0.701, P < 0.001) and thickness (r = 0.560, P < 0.001) were found. For 10 participants with heart rate more than 80 beats/min, the image quality of SSFP was higher than TSE (P = 0.016). SSFP provided image quality and measurement accuracy that was comparable to TSE. With its higher performance under fast heart rate conditions, SSFP may break through the existing thresholds for heart rate and extend clinical applicability of coronary wall MR imaging to a larger population.

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出版当年[2011]版:
大类 | 4 区 医学
小类 | 3 区 核医学 4 区 心脏和心血管系统
最新[2023]版:
大类 | 4 区 医学
小类 | 4 区 心脏和心血管系统 4 区 核医学
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出版当年[2010]版:
Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Q2 CARDIAC & CARDIOVASCULAR SYSTEMS
最新[2023]版:
Q3 CARDIAC & CARDIOVASCULAR SYSTEMS Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

影响因子: 最新[2023版] 最新五年平均 出版当年[2010版] 出版当年五年平均 出版前一年[2009版] 出版后一年[2011版]

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第一作者机构: [1]Northwestern Univ, Dept Radiol, Chicago, IL 60611 USA;
通讯作者:
通讯机构: [1]Northwestern Univ, Dept Radiol, Chicago, IL 60611 USA; [4]Cedars Sinai Med Ctr, 8700 Beverly Blvd, Los Angeles, CA 90048 USA
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