Three-gamma annihilation imaging in positron emission tomography
Three-gamma annihilation imaging in positron emission tomography
复制标题
正电子发射断层扫描中的三伽马湮灭成像
DOI：
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复制
发表时间：
2004
影响因子：
10.6
通讯作者：
F. Smith
中科院分区：
文献类型：
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作者：
K. Kacperski;N. Spyrou;F. Smith
有人认为，正电子湮灭产生三个光子的情况虽然相当罕见，但仍可作为正电子发射断层扫描的一种新的成像模式。探测到三个衰变光子时所获得的信息明显多于511 keV双伽马湮灭的情况。文中讨论了三伽马成像在所需探测器性能、空间分辨率和计数率方面的表现。一个简单的原理验证实验证实了这种新成像方法的可行性。
It is argued that positron annihilation into three photons, although quite rare, could still be used as a new imaging modality of positron emission tomography. The information gained when the three decay photons are detected is significantly higher than in the case of 511 keV two-gamma annihilation. The performance of three-gamma imaging in terms of the required detector properties, spatial resolution and counting rates is discussed. A simple proof-of-principle experiment confirms the feasibility of the new imaging method.