부산대학교 도서관

Creating an organ-dedicated PET system facilitates compact high-sensitivity geometries capable of high spatial resolution with a good image signal-to-noise ratio. The Molecular Imaging Instrumentation Laboratory has dedicated effort to developing an economically friendly brain-dedicated insert intended for simultaneous PET/MR imaging. This first-generation insert has been structurally modified for clinical translation with the near completion of the algorithmic foundation for maximum image quality. This work reports the accuracy and impact of data corrections such as normalization, randoms subtraction, attenuation correction, and scatter correction on a contrast phantom prepared with a signal-to-background ratio of 4:1. The final contrast ratio was calculated to be 2.64 for the largest rod in our phantom. Scatter estimation proved especially difficult given the compact system geometry.