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Measurement of System Functions With Extended Field-of-View

机译：扩展视野下的系统功能测量

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摘要

The common way to obtain an image in magnetic particle imaging (MPI) is by inversion of a system function that describes the transformation between spatial distribution of the contrast agent and the measured signal. Recently, a concept of continuous motion of the field-of-view (FoV) has been introduced. In the latter, the MPI images were acquired during fast linear FoV motions. In this paper, we investigate the feasibility of more complex trajectories of the FoV in combination with adequate reconstruction. We compare the former proposed correction method with a large system function that contains the complex focus field movement. As a result, the approach to measure the complete system function yields in equal image quality for low FoV speed and slightly better image quality at the high-speed limit.
机译：在磁性粒子成像（MPI）中获得图像的常见方法是通过反转系统函数来描述造影剂的空间分布与测量信号之间的转换。近来，已经引入了视场连续运动（FoV）的概念。在后者中，MPI图像是在快速线性FoV运动期间获取的。在本文中，我们研究了结合足够的重构，FoV的更复杂轨迹的可行性。我们将前者提出的校正方法与包含复杂焦点场运动的大型系统函数进行了比较。结果，用于测量整个系统功能的方法在低FoV速度下产生了相同的图像质量，而在高速极限下产生的图像质量稍好。

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