Data underlying the publication: "NaI gamma camera performance for high energies: Effects of crystal thickness, photomultiplier tube geometry and light guide thickness".

This work focused on the study of NaI gamma cameras, with particular attention to scintillator thickness, PMT size and layout, and light guide thickness. The motivation for this study stems from the growing interest in gamma imaging beyond the conventional clinical energy range, for example in theranostic applications and preclinical multi-isotope PET and PET-SPECT imaging. However, standard gamma cameras are typically equipped with 9.5 mm thick NaI crystals, which can lead to limited sensitivity at higher energies. To address this limitation, we investigated the extent to which increasing the scintillator thickness can improve photopeak sensitivity for high-energy isotopes while maintaining acceptable spatial resolution. This led to a systematic study in which different combinations of scintillator thickness, light guide thickness, and PMT type were compared through performance analysis. The collected data include simulation macros, performance analysis scripts, and reconstructed images. All datasets, scripts, and software used in the paper <em>“NaI gamma camera performance for high energies: Effects of crystal thickness, photomultiplier tube geometry and light guide thickness”</em> have been archived. A user manual detailing how to operate the software tools employed in this work is also included.

本研究针对碘化钠（NaI）伽马相机开展相关研究，重点关注闪烁体（scintillator）厚度、光电倍增管（Photomultiplier Tube，PMT）的尺寸与布局，以及光导（light guide）厚度。本研究的动机源于学界对超出常规临床能量范围的伽马成像技术愈发广泛的研究兴趣，例如治疗诊断学（theranostic）应用场景，以及临床前多同位素正电子发射断层扫描（PET）与PET-单光子发射计算机断层显像（SPECT）成像场景。然而，标准伽马相机通常配备厚度为9.5 mm的碘化钠晶体，这会导致其在较高能量区间内的灵敏度受限。为解决这一局限，本研究探究了在保持可接受的空间分辨率的前提下，增加闪烁体厚度可在多大程度上提升高能同位素的光电峰（photopeak）灵敏度。基于此，本研究开展了系统性研究，通过性能分析对比了闪烁体厚度、光导厚度与光电倍增管类型的多种组合方案。所收集的数据集包含仿真宏脚本、性能分析脚本与重建图像。本论文<em>"NaI伽马相机的高能性能：晶体厚度、光电倍增管几何结构与光导厚度的影响"</em>中使用的全部数据集、脚本与软件均已完成归档存储。本研究还附带一份用户手册，详细说明了如何操作本研究中使用的各类软件工具。