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- W4205888555 abstract "Positronium (Ps) lifetime imaging is gaining attention to bring out additional biomedical information from positron emission tomography (PET). The lifetime of Psin vivocan change depending on the physical and chemical environments related to some diseases. Due to the limited sensitivity, Ps lifetime imaging may require merging some voxels for statistical accuracy. This paper presents a method for separating the lifetime components in the voxel to avoid information loss due to averaging. The mathematics for this separation is the inverse Laplace transform (ILT), and the authors examined an iterative numerical ILT algorithm using Tikhonov regularization, namely CONTIN, to discriminate a small lifetime difference due to oxygen saturation. The separability makes it possible to merge voxels without missing critical information on whether they contain abnormally long or short lifetime components. The authors conclude that ILT can compensate for the weaknesses of Ps lifetime imaging and extract the maximum amount of information." @default.
- W4205888555 created "2022-01-25" @default.
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- W4205888555 date "2022-01-21" @default.
- W4205888555 modified "2023-09-30" @default.
- W4205888555 title "Using inverse Laplace transform in positronium lifetime imaging" @default.
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- W4205888555 doi "https://doi.org/10.1088/1361-6560/ac499b" @default.
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