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Positronium: review of symmetry, conserved quantities and decay for the radiological physicist.

机译:正电子:审查放射物理学家的对称性,保守量和衰变。

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摘要

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.
机译:PET-CT扫描仪将高空间分辨率的CT图像叠加在相对低分辨率的生理PET图像上,大大提高了PET成像模式的功效。随着放射医学和医学物理学界中PET成像技术的出现,医学物理学家可以期望在这种新形式的验收测试,质量保证,辐射安全和住院医师教学方面承担专业责任。考虑到这一点,我们对PET的一个微妙方面进行了回顾:正电子的形成,对称性和衰变;在an灭之前形成的氢样正电子-电子络合物。

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