• Title/Summary/Keyword: Nuclear medicine physics

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Nuclear Medicine Physics: Review of Advanced Technology

  • Oh, Jungsu S.
    • Progress in Medical Physics
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    • v.31 no.3
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    • pp.81-98
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    • 2020

  • This review aims to provide a brief, comprehensive overview of advanced technologies of nuclear medicine physics, with a focus on recent developments from both hardware and software perspectives. Developments in image acquisition/reconstruction, especially the time-of-flight and point spread function, have potential advantages in the image signal-to-noise ratio and spatial resolution. Modern detector materials and devices (including lutetium oxyorthosilicate, cadmium zinc tellurium, and silicon photomultiplier) as well as modern nuclear medicine imaging systems (including positron emission tomography [PET]/computerized tomography [CT], whole-body PET, PET/magnetic resonance [MR], and digital PET) enable not only high-quality digital image acquisition, but also subsequent image processing, including image reconstruction and post-reconstruction methods. Moreover, theranostics in nuclear medicine extend the usefulness of nuclear medicine physics far more than quantitative image-based diagnosis, playing a key role in personalized/precision medicine by raising the importance of internal radiation dosimetry in nuclear medicine. Now that deep-learning-based image processing can be incorporated in nuclear medicine image acquisition/processing, the aforementioned fields of nuclear medicine physics face the new era of Industry 4.0. Ongoing technological developments in nuclear medicine physics are leading to enhanced image quality and decreased radiation exposure as well as quantitative and personalized healthcare.

  • https://doi.org/10.14316/pmp.2020.31.3.81 인용 PDF KSCI

Effects of Scintillation Crystal Surface Treatments on Gamma Camera Imaging (섬광체 옆표면처리가 감마카메라 영상에 미치는 효과)

  • Kim, J.H.;Choi, Y.;Oh, C.H.;Kim, J.Y.;Lee, M.Y.;Kim, S.E.;Choe, Y.S.;Joo, K.S.;Kim, B.T.
    • Proceedings of the KOSOMBE Conference
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    • v.1998 no.11
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    • pp.303-304
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    • 1998

  • We investigated the effects of scintillation crystal surface treatment on gamma camera imaging. The NaI(Tl) and CsI(Tl) (20 mm (dia.) $\times10mm$ (thick) plate) scintillators were chosen for this study. Two different surface treatments, white and black reflectors, were applied to NaI(Tl) and CsI(Tl). The optical properties of generated scintillation light were evaluated using Monte Carlo simulation and postion sensitive photo multiplier tube (PSPMT). We measured sensitivity, energy resolution and spatial resolution of a gamma camera system with the scintillators coupled to a PSPMT. Based on the results, we concluded that the careful consideration of surface treatments of the scintillator was necessary in order to develop the gamma camera having good sensitivity and spatial resolution.

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