Positronium: Review of symmetry, conserved quantities and decay for the radiological physicist
Positronium: Review of symmetry, conserved quantities and decay for the radiological physicist
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DOI：
10.1118/1.1630494
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发表时间：
2004-01-01
期刊：
影响因子：
3.8
通讯作者：
Harpen, MD
中科院分区：
文献类型：
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作者：
Harpen, MD
正电子发射断层扫描 - 计算机断层扫描（PET - CT）扫描仪将高空间分辨率的CT图像叠加在分辨率相对较低的生理PET图像上，极大地提高了PET成像模式的效能。随着PET成像应用的增加，在放射学和医学物理学领域，医学物理学家在这种新成像模式的验收测试、质量保证、辐射安全以及住院医师教学方面可能要承担专业责任。考虑到这一点，我们对PET的一个细微方面进行综述：正电子素的形成、对称特性和衰变；即在湮灭之前形成的类似氢的正电子 - 电子复合物。（C）2004年美国医学物理学家协会
The PET-CT scanner, which overlays a high spatial resolution CT image on a relatively low resolution physiologic PET image, has greatly increased the efficacy of the PET imaging modality. With the resulting increase in the presence of PET imaging,in the radiologic and medical physics communities, medical physicists can expect professional responsibilities in acceptance testing, quality assurance, radiation safety and resident teaching of this new modality. With this in mind we present a review of a subtle aspect of PET: the formation, symmetry properties and decay of positronium; the hydrogen like positron-electron complex which forms prior to annihilation. (C) 2004 American Association of Physicists in Medicine.