Assessment of myocardial function with interactive non-breath-hold real-time MR imaging:: Comparison with echocardiography and breath-hold cine MR imaging
Assessment of myocardial function with interactive non-breath-hold real-time MR imaging:: Comparison with echocardiography and breath-hold cine MR imaging
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DOI：
10.1148/radioi.2311021237
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发表时间：
2004-04-01
期刊：
影响因子：
19.7
通讯作者：
Buecker, A
中科院分区：
文献类型：
--
作者：
Kühl, HP;Spuentrup, E;Buecker, A
目的：比较螺旋梯度回波序列和径向稳态自由进动序列，并与二维超声心动图(ECHO)比较这两种交互式实时心脏磁共振(MR)检查对局部心肌功能的评价。材料和方法：以心电触发屏气稳态自由进动(BH-SSFP)MR成像为参照标准。纳入35例未经选择的常规超声心动图患者。从相应的两腔、三腔和四腔长轴视图和室中短轴视图中获取数据。图像质量和节段性室壁运动的描述采用美国超声心动图学会的16节段模型进行半定量评分。采用重复测量方差分析评估四种成像方法在图像质量和室壁运动描述评分方面的差异。结果：与BH-SSFP MR成像相比，放射状MR成像的图像质量相近(无显著差异)，而螺旋MR成像和ECHO成像的图像质量明显低于BH-SSFP成像(P<；.0001)。长轴和短轴切面的图像质量在放射状和BH-SSFP序列之间没有显著差异，而长轴螺旋(P<；0.05)和短轴和长轴回声(P<；0.0001)的图像质量低于BH-SSFP序列。与BH-SSFP MR的平均室壁运动积分相比，放射状MR的平均室壁运动积分无显著差异，但ECHO(P<；.05)和螺旋MR(P=.0003)的平均室壁运动积分显著低于BH-SSFP MR。与BH-SSFP序列比较，在室壁运动评分方面与BH-SSFP序列符合的Cohen kappa系数分别为0.47、0.67和0.89。结论：与BH-SSFP序列相比，径向序列能够更准确地评价局部室壁运动，图像质量优于螺旋序列和回声序列。(C)RSNA，2004年。
PURPOSE: To compare a spiral gradient-echo sequence with a radial steady-state free precession sequence and to compare these two interactive real-time cardiac magnetic resonance (MR) imaging examinations with harmonic two-dimensional echocardiography (ECHO) for the evaluation of regional myocardial function.MATERIALS AND METHODS: Electrocardiographically triggered breath-hold steady-state free precession (BH-SSFP) MR imaging was the reference standard. Thirty-five nonselected patients scheduled for routine ECHO were included. Data from corresponding two-, three-, and four-chamber long-axis views and a midventricular short-axis view were acquired with each modality. Image quality and depiction of segmental wall motion were scored semiquantitatively by using the 16-segment model of the American Society of Echocardiography. Repeated-measures analysis of variance was performed to assess differences in image quality and wall motion depiction scores among the four imaging methods. Agreement was assessed by using Cohen kappa statistics.RESULTS: Compared with the image quality achieved with BH-SSFP MR imaging, the image quality achieved with radial MR imaging was similar (nonsignificant difference), but that achieved with spiral MR imaging and ECHO was significantly inferior (P < .0001). There were no significant differences in the image quality of the long- and short-axis views between the radial and BH-SSFP sequences, while the image quality of the long-axis spiral (P < .05) and the short- and long-axis ECHO (P < .0001) views was lower than that of the BH-SSFP views. Compared with the mean wall motion score for BH-SSFP MR imaging, the mean wall motion score for radial MR imaging was not significantly different, but those for ECHO (P < .05) and spiral MR imaging (P = .0003) were significantly lower. Cohen kappa coefficients for agreement with the BH-SSFP sequence regarding wall motion scoring were 0.47 for ECHO, 0.67 for the spiral sequence, and 0.89 for the radial sequence.CONCLUSION: The radial sequence enables similar accurate assessment of regional wall motion compared with the BH-SSFP sequence and yields image quality that is superior to that yielded by the spiral sequence and ECHO. (C) RSNA, 2004.