Performance of 3-T Nonenhanced Whole-Heart bSSFP Coronary MR Angiography: A Comparison with 3-T Modified Dixon Water-Fat Separation Sequence.
IF 3.8
Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Yong Yuan, Yue Jiang, Guang Ming Lu, Dongsheng Jin, Wei Bo Chen, Baijun Wang, Tong Chen, Qiuju Hu, Jiajia Zhu, Yane Zhao
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引用次数: 0
Abstract
Purpose To compare the performance of improved nonenhanced whole-heart balanced steady-state free precession (bSSFP) coronary MR angiography (CMRA) with that of the modified Dixon (mDixon) water-fat separation method at 3-T imaging. Materials and Methods From September 2023 to December 2023, patients with suspected coronary artery disease who underwent bSSFP and mDixon CMRA after coronary CT angiography (CCTA) were consecutively recruited. The two sequences' acquisition success rates, subjective image quality scores, objective image quality measurements, and diagnostic performance for coronary stenosis with CCTA as the reference standard were analyzed. Results Sixty-two participants completed two CMRA sequences. Data from 49 participants (30 male and 19 female participants; mean age, 62 years ± 10 [SD]) were ultimately analyzed. The acquisition success rates, overall subjective image quality scores, apparent signal-to-noise ratios, and contrast-to-noise ratios of bSSFP and mDixon were significantly different: 93.5% versus 80.6% (P = .021), 5 versus 4 (P < .001), 33.4 ± 10.6 versus 20.7 ± 7.5 (P < .001), and 14.9 ± 6.2 versus 7.0 ± 3.1 (P < .001), respectively. The sensitivity and specificity of bSSFP in predicting stenosis greater than or equal to 50% were 94.7% (95% CI: 71.9, 99.7) and 96.7% (95% CI: 80.9, 99.8) per participant, 95.8% (95% CI: 76.9, 99.8) and 96.7% (95% CI: 91.3, 98.9) per vessel, and 96.6% (95% CI: 80.4, 99.8) and 99.0% (95% CI: 97.3, 99.7) per segment, respectively. Conclusion Compared with the mDixon water-fat separation method, the improved nonenhanced whole-heart bSSFP sequence performed excellently at 3-T imaging. Nonenhanced bSSFP CMRA sequences at 3-T imaging may be recommended for broader clinical applications. Keywords: Coronary Arteries, Imaging Sequences, Comparative Studies, Technology Assessment, Cardiac, MR Angiography, Coronary Angiography, MRI, Image Quality Enhancement Supplemental material is available for this article. © RSNA, 2025.
3-T非增强全心bSSFP冠状动脉磁共振成像的性能:与3-T改良Dixon水脂分离序列的比较
目的比较改良非增强全心平衡稳态自由旋进(bSSFP)冠状动脉MR血管造影(CMRA)与改良Dixon水脂分离(mDixon)法在3-T成像中的表现。材料与方法于2023年9月至2023年12月,连续招募冠状动脉CT血管造影(CCTA)后行bSSFP和mDixon CMRA的疑似冠状动脉疾病患者。分析两个序列的采集成功率、主观图像质量评分、客观图像质量测量值以及CCTA作为参考标准对冠状动脉狭窄的诊断效果。结果62名参与者完成了2个CMRA序列。数据来自49名参与者(30名男性和19名女性参与者;平均年龄62岁±10 [SD])。bSSFP和mDixon的采集成功率、总体主观图像质量评分、表观信噪比和噪比差异显著:分别为93.5%比80.6% (P = 0.021)、5比4 (P < 0.001)、33.4±10.6比20.7±7.5 (P < 0.001)、14.9±6.2比7.0±3.1 (P < 0.001)。bSSFP预测狭窄大于或等于50%的敏感性和特异性分别为每位受试者94.7% (95% CI: 71.9, 99.7)和96.7% (95% CI: 80.9, 99.8),每条血管95.8% (95% CI: 76.9, 99.8)和96.7% (95% CI: 91.3, 98.9),每节段96.6% (95% CI: 80.4, 99.8)和99.0% (95% CI: 97.3, 99.7)。结论与mDixon水脂分离法相比,改进的非增强全心bSSFP序列在3-T成像上表现优异。3-T成像的非增强bSSFP CMRA序列可能被推荐用于更广泛的临床应用。关键词:冠状动脉,成像序列,比较研究,技术评估,心脏,磁共振血管造影,冠状动脉造影,MRI,图像质量增强©rsna, 2025。
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