نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده مهندسی انرژی، دانشگاه صنعتی شریف، صندوق پستی: 14565-1114، تهران- ایران
2 دپارتمان پزشکی هستهای، بیمارستان امام خمینی، دانشگاه علوم پزشکی تهران، صندوق پستی: 1419733141، تهران- ایران
3 دپارتمان فیزیک پزشکی و مهندسی پزشکی، دانشگاه علوم پزشکی تهران، صندوق پستی: 1461884513، تهران- ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
Dynamic Positron Emission Tomography (PET) imaging has significant potential for extracting kinetic parameters of tracers, particularly the Ki parameter. This study evaluates the use of the Dual Time Point (DTP) technique to generate parametric Ki images from two 3-minute static PET scans. A simulation study was conducted using the XCAT phantom, generating six realistic heterogeneous tumors embedded in lung and liver tissues with various levels of [18F] FDG uptake. Parametric Ki images were generated and evaluated using Patlak analysis and a population-based input function (PBIF). Additionally, TBR and CNR parameters in SUV images and parametric images produced by DTP and full dynamic methods were compared and analyzed. The results showed a significant correlation (> 0.9) between the Ki parameter derived from DTP and full dynamic imaging methods. Moreover, the high TBR parameter in DTP images compared to SUV images (70% for lung tumors, 35% for liver tumors) indicates improved contrast and image quality. Consequently, DTP images can be a suitable alternative to complete dynamic PET and SUV images in clinical settings.
کلیدواژهها English