한국의학물리학회지:의학물리 (Progress in Medical Physics)

  • 제27권4호
  • /
  • Pages.236-240
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  • 2016
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  • 2508-4445(pISSN)
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  • 2508-4453(eISSN)
한국의학물리학회 (Korean Society of Medical Physics)
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Conceptual Study of Brain Dedicated PET Improving Sensitivity

  • Shin, Han-Back (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Choi, Yong (Department of Electronic Engineering, Sogang University) ;
  • Huh, Yoonsuk (Department of Electronic Engineering, Sogang University) ;
  • Jung, Jin Ho (Department of Electronic Engineering, Sogang University) ;
  • Suh, Tae Suk (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea)
  • 투고 : 2016.12.16
  • 심사 : 2016.12.23
  • 발행 : 2016.12.31
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초록

The purpose of this study is to propose a novel high sensitivity neuro-PET design. The improvement of sensitivity in neuro-PET is important because it can reduce scan time and/or radiation dose. In this study, we proposed a novel PET detector design that combined conical shape detector with cylindrical one to obtain high sensitivity. The sensitivity as a function of the oblique angle and the ratio of the conical to cylindrical portion was estimated to optimize the design of brain PET using Monte Carlo simulation tool, GATE. An axial sensitivity and misplacement rate by penetration of ${\gamma}$ rays were also estimated to evaluate the performance of the proposed PET. The sensitivity was improved by 36% at the center of axial FOV. This value was similar to the calculated value. The misplacement rate of conical shaped PET was about 5% higher than the conventional PET. The results of this study demonstrated the conical detector proposed in this study could provide subsequent improvement in sensitivity which could allow to design high sensitivity PET for brain imaging.

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참고문헌

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피인용 문헌

  1. Digital Imaging and Communications in Medicine (DICOM) information conversion procedure for SUV calculation of PET scanners with different DICOM header information vol.44, pp.None, 2016, https://doi.org/10.1016/j.ejmp.2017.05.063