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New exponential functions based on CT density to estimate the percentage of liver that is fat

机译:基于CT密度的新指数函数可估算脂肪肝的百分比

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摘要

Objective:In fluorine-18 fludeoxyglucose positron emission tomography/CT, hepatic standardized uptake value (SUV) is reduced through “signal dilution” by hepatic fat. The maximum SUV (SUVmax) is less affected than the mean SUV (SUVmean), therefore SUVmax/SUVmean correlates with hepatic fat. The SUV can be corrected for signal dilution using an equation relating CT density (CTD) to %fat. The objective was to exploit the relationship between SUV indices and CTD to assess the validity of two previously published equations (one linear and one sigmoid) for estimating %fat from CTD and two new exponential equations.
机译:目的:在氟-18氟葡萄糖葡萄糖正电子发射断层扫描/ CT中,通过肝脏脂肪的“信号稀释”降低肝脏标准摄取值(SUV)。最大SUV(SUVmax)的影响小于平均SUV(SUVmean),因此SUVmax / SUVmean与肝脂肪相关。可以使用将CT密度(CTD)与%fat相关的方程式对SUV进行信号稀释校正。目的是利用SUV指数和CTD之间的关系来评估两个先前发布的方程(一个线性和一个S型)从CTD估算%fat和两个新的指数方程的有效性。

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