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24 October 2024 SPECT with a Compton camera for thyroid cancer imaging
Yuxuan Liang, Mengzhou Li, Shuo Han, Hengyong Yu, Ge Wang
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Proceedings Volume 13152, Developments in X-Ray Tomography XV; 1315224 (2024) https://doi.org/10.1117/12.3028247
Event: Optical Engineering + Applications, 2024, San Diego, California, United States
Abstract
Single photon emission computed tomography (SPECT) is commonly used with radioiodine scintigraphy to evaluate patients with multiple diseases such as thyroid cancer. The clinical gamma camera for SPECT contains a mechanical collimator that greatly compromises dose efficiency and limits diagnostic performance. The Compton camera is emerging as a promising alternative for mapping the distribution of radio-pharmaceuticals in the thyroid, since the Compton camera does not require mechanical collimation and in principle does not reject gamma ray photons. In this study, a high-efficiency tomographic imaging system is designed with a Compton camera for thyroid cancer imaging. A Timepix3-based Compton camera is selected for collecting gamma photons emitted from an I-131 phantom, and the backprojection filtration algorithm is applied for image reconstruction. The results demonstrate the feasibility of the Compton camera for high efficiency SPECT imaging and also the limitations that need further efforts to address.
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Yuxuan Liang, Mengzhou Li, Shuo Han, Hengyong Yu, and Ge Wang "SPECT with a Compton camera for thyroid cancer imaging", Proc. SPIE 13152, Developments in X-Ray Tomography XV, 1315224 (24 October 2024); https://doi.org/10.1117/12.3028247
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KEYWORDS
Single photon emission computed tomography
Compton scattering
Imaging systems
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