Investigation of a high performance DOI-PET detector by using the scintillation crystals cut as triangular prisms

正电子发射断层扫描（PET）是诊断和早期发现癌症的有力工具。交互深度（DOI）探测器提供三维的辐射探测位置，对于PET扫描仪具有精确的图像起着重要作用。在本研究中，我从一个新的角度，即改变探测器晶体的形状，开发了一种具有高位置分辨率的DOI探测器。用这种方法，我可以达到8个分区的DOI探测器的位置分辨率，而其他研究小组达到2或3个分区的分辨率。该方法也可以应用于任何类型的探测器晶体。

Positron emission tomography (PET) is a powerful tool in the diagnosis and early detection of cancer. The depth-of-interaction (DOI) detector which provides a radiation detected location 3-dimensionally plays an important role for a PET scanner to have an accurate image. In this study, I developed a DOI detector having high position resolution by a new standpoint, that is, changing the shape of detector crystals. With this method I could attain the position resolution of 8 divisions in the DOI detector whereas other research groups attained the resolutions of 2 or 3 divisions. The method can be also applied to any kind of detector crystals.