Application of sigmoidal optimization to reconstruct nuclear medicine image: Comparison with filtered back projection and iterative reconstruction method

Nuclear Engineering and Technology

Do-Kun Yoon¹  Tae Suk Suh²  Min-Geon Choi²  Moo-Sub Kim²  Byung Wook Choi³  Sungmin Kang³  Han-Back Shin⁴  Dong-Wook Kim⁴  Martin Law⁵  Shih-Kien Djeng⁵ 

[1] Corresponding author.;Department of Biomedical Engineering and Research Institute of Biomedical, Engineering, College of Medicine, Catholic University of Korea, Seoul, 06591, South Korea;Department of Nuclear Medicine, Daegu Catholic University Medical Center, Catholic University of Daegu School of Medicine, Daegu, 42471, South Korea;Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University, College of Medicine, Seoul, 03722, South Korea;Proton Therapy Pte Ltd, 1 Biopolis Drive, 138622, Singapore;

关键词: Sigmoid function;    Profile optimization;    PET;    SPECT;    Monte Carlo simulation;   

DOI  :  

来源: DOAJ

【 摘 要 】

High levels for noise and a loss of true signal make the quantitative interpretation of nuclear medicine (NM) images difficult. An application of profile optimization using a sigmoidal function in this study was used to acquire the NM images with high quality. And the images were acquired by using three kinds of reconstruction method using each same sinogram: a standard filtered back-projection (FBP), an iterative reconstruction (IR) technique, and the sigmoidal function profile optimization (SFPO). Comparison of image according to reconstruction method was performed to show a superiority of the SFPO for imaging. The images reconstructed by using the SFPO showed an average of 1.49 times and of 1.17 times better in contrast than the results obtained using the standard FBP and the IR technique, respectively. Higher signal to noise ratios were obtained as an average of 12.30 times and of 3.77 times than results obtained using the standard FBP and the IR technique, respectively. This study confirms that reconstruction with SFPO (vs FBP and vs IR) can lead to better lesion detectability and characterization with noise reduction. It can be developed for future reconstruction technique for the NM imaging.

【 授权许可】

Unknown