On optimal liver T2* measurement: region of interest or pixel-wise?
On optimal liver T2* measurement: region of interest or pixel-wise?
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关于最佳肝脏 T2* 测量：感兴趣区域还是逐像素？
DOI：
10.1186/1532-429x-14-s1-p293
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发表时间：
2012-02-01
影响因子：
6.4
通讯作者：
He T
中科院分区：
文献类型：
--
作者：
Feng Y;Gatehouse PD;Liu P;Carpenter JP;Pennell DJ;Firmin DN;Chen W;He T
MRI T2* 测量在肝脏铁定量中起着重要作用。目前有两种临床方法测量感兴趣区域（ROI）中的T2*：第一种是拟合ROI中的信号均值（均值-ROI拟合，MRF），第二种是对ROI中的逐像素拟合（PWF）T2* s进行平均。在最近的一项研究中，Marro等人[1]通过数学模拟比较了PWF和MRF的性能，但仅评价了偏移模型。
BackgroundMRI T2* measurement is playing an important role in liver iron quantification. There are currently two clinical approaches measuring T2* in the region of interest (ROI): the first is to fit the means of signals in the ROI (mean-ROI fitting, MRF) and the second to average the pixel-wisely fitted (PWF) T2* s in the ROI. In a recent study, Marro et al [1] compared the performances of PWF and MRF through mathematical simulations but only the offset model was evaluated.