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Quantitative pixel-wise measurement of myocardial blood flow: The impact of surface coil-related field inhomogeneity and a comparison of methods for its correction

机译:心肌血流的逐像素定量测量:与表面线圈相关的场不均匀性的影响及其校正方法的比较

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摘要

BackgroundSurface coil-related field inhomogeneity potentially confounds pixel-wise quantitative analysis of perfusion CMR images. This study assessed the effect of surface coil-related field inhomogeneity on the spatial variation of pixel-wise myocardial blood flow (MBF), and assessed its impact on the ability of MBF quantification to differentiate ischaemic from remote coronary territories. Two surface coil intensity correction (SCIC) techniques were evaluated: 1) a proton density-based technique (PD-SCIC) and; 2) a saturation recovery steady-state free precession-based technique (SSFP-SCIC).
机译:背景与表面线圈相关的场不均匀性可能会混淆灌注CMR图像的逐像素定量分析。这项研究评估了表面线圈相关场的不均匀性对逐像素心肌血流(MBF)空间变化的影响,并评估了其对MBF定量区分缺血性和远端冠状动脉区域的能力的影响。评估了两种表面线圈强度校正(SCIC)技术:1)基于质子密度的技术(PD-SCIC);以及2)基于饱和恢复的稳态无进动技术(SSFP-SCIC)。

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