Basic Experiments for new type PET using Compton scattering

PET是早期发现癌症的优秀医疗仪器。然而，需要更好的成像性能和更低的人体剂量。因此，我想到了利用塑料闪烁体中的康普顿散射来进行飞行时间PET的想法，并进行了构建原型探测器的基本实验。虽然我不能获得时间分辨率的世界纪录，但可以肯定的是，原型探测器可以获得500~600皮秒的时间分辨率。此外，我认识到，如果塑料闪烁体的尺寸变得更小，时间分辨率将提高抑制多次康普顿散射。

The PET is excellent medical instrument for the early discovery of cancers. However, better imaging performance and lower dose to human body are required. So I hit on the idea to utilize the Compton scattering in the plastic scintillator to Time-of-Flight PET and I have carried out the basic experiments constructing the prototype detector. Though I can not obtain the world record for the time resolution, it is confirmed that the prototype detector can obtain the time resolution of 500~600 psec. Moreover, I recognized that the time resolution will go up suppressing the multiple Compton scattering if the size of the plastic scintillator becomes smaller.