Development of TOF-PET using Compton scattering by plastic scintillators
Development of TOF-PET using Compton scattering by plastic scintillators
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DOI：
10.1016/j.nima.2016.06.100
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发表时间：
2017-02
影响因子：
1.4
通讯作者：
M. Kuramoto;T. Nakamori;S. Kimura;S. Gunji;M. Takakura;J. Kataoka
中科院分区：
文献类型：
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作者：
M. Kuramoto;T. Nakamori;S. Kimura;S. Gunji;M. Takakura;J. Kataoka
我们提出了一种飞行时间（TOF）技术，使用塑料闪烁体，具有快速衰减时间的几个ns的正电子发射断层扫描（PET）。虽然塑料对511 keV伽马射线的光电吸收概率由于其小的密度和有效原子序数而非常低，但康普顿散射的截面与传统无机吸收剂的吸收截面相当。因此，我们提出了TOF-PET使用康普顿散射与塑料散射（康普顿PET），并进行了基础实验，探索康普顿PET的能力。我们证明了塑料闪烁器比LYSO（Ce）和GAGG（Ce）闪烁器具有更好的时间分辨率。此外，我们还评估了塑料反射器的相互作用深度分辨能力。
We propose a time-of-flight (TOF) technique using plastic scintillators which have fast decay time of a few ns for positron emission tomography (PET). While the photoelectric absorption probability of the plastic for 511 keV gamma rays are extremely low due to its small density and effective atomic number, the cross section of Compton scattering is comparable to that of absorption by conventional inorganic scintillators. We thus propose TOF-PET using Compton scattering with plastic scintillators (Compton-PET), and performed fundamental experiments towards exploration of the Compton-PET capability. We demonstrated that the plastic scintillators achieved the better time resolution in comparison to LYSO(Ce) and GAGG(Ce) scintillators. In addition we evaluated the depth-of-interaction resolving capability with the plastic scintillators.