Material‐specific imaging and virtual monochromatic imaging/analysis are the two forms of spectral imaging in CT implemented via either energy‐integration or photon‐counting data acquisition. Aimed at further understanding the fundamentals and providing guidelines on its design and implementation, we quantitatively investigate the conditioning (sufficiency in dimensionality, well‐posedness in basis functions, and matching of K‐edge materials) of basis materials and its impact on the performance of spectral imaging in photon‐counting CT.

中文翻译：

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光子计数CT中基础材料的条件及其对基于多材料分解的光谱成像的影响

特定材料成像和虚拟单色成像/分析是CT中通过能量积分或光子计数数据采集实现的两种光谱成像形式。为了进一步了解基础知识并为其设计和实施提供指导，我们定量研究了基础材料的条件（尺寸足够，基础函数的适度性以及K-edge材料的匹配）及其对基础性能的影响。光子计数CT中的光谱成像。