https://scholars.lib.ntu.edu.tw/handle/123456789/625080
標題: | Accelerating Image Reconstruction in Dual-Head PET System by GPU and Symmetry Properties | 作者: | Chou C.-Y Dong Y Hung Y Kao Y.-J Wang W Kao C.-M Chou, Cheng-Ying |
公開日期: | 2012 | 卷: | 7 | 期: | 12 | 來源出版物: | PLoS ONE | 摘要: | Positron emission tomography (PET) is an important imaging modality in both clinical usage and research studies. We have developed a compact high-sensitivity PET system that consisted of two large-area panel PET detector heads, which produce more than 224 million lines of response and thus request dramatic computational demands. In this work, we employed a state-of-the-art graphics processing unit (GPU), NVIDIA Tesla C2070, to yield an efficient reconstruction process. Our approaches ingeniously integrate the distinguished features of the symmetry properties of the imaging system and GPU architectures, including block/warp/thread assignments and effective memory usage, to accelerate the computations for ordered subset expectation maximization (OSEM) image reconstruction. The OSEM reconstruction algorithms were implemented employing both CPU-based and GPU-based codes, and their computational performance was quantitatively analyzed and compared. The results showed that the GPU-accelerated scheme can drastically reduce the reconstruction time and thus can largely expand the applicability of the dual-head PET system. © 2012 Chou et al. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871571367&doi=10.1371%2fjournal.pone.0050540&partnerID=40&md5=2ba103d5e12a34035b30690a50617992 https://scholars.lib.ntu.edu.tw/handle/123456789/625080 |
ISSN: | 19326203 | DOI: | 10.1371/journal.pone.0050540 | SDG/關鍵字: | algorithm; article; computer system; graphics processing unit; image processing; image reconstruction; imaging system; intermethod comparison; mathematical computing; positron emission tomography; quantitative analysis; Algorithms; Animals; Computer Graphics; Humans; Image Processing, Computer-Assisted; Positron-Emission Tomography; Software |
顯示於: | 應用數學科學研究所 |
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