Experimental evaluation of reconstruction algorithms for scintillation crystal array based on charge projection readout

Shi, Rengang; Chen, Ying; Dang, Xiaojun; Zhu, Bo; Wang, Zhonghai; Yang, Chaowen; Wei, Mengfu

doi:10.1016/j.nima.2019.05.064

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…However, for this to be achieved, advanced event positioning algorithms are required, which consider the truncation effects noted above. This demands more complex data output and readout architectures, and more data-intensive devices [109,110]. The MAGICS device provides an excellent example of the continuous-crystal detector design approach, using a 51 × 51 × 5 mm LaBr 3 detector coupled to an MPPC array with 256 readout channels.…”

Section: Continuous Scintillatorsmentioning

confidence: 99%

Intraoperative Gamma Cameras: A Review of Development in the Last Decade and Future Outlook

Farnworth

Bugby

2023

J. Imaging

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Portable gamma cameras suitable for intraoperative imaging are in active development and testing. These cameras utilise a range of collimation, detection, and readout architectures, each of which can have significant and interacting impacts on the performance of the system as a whole. In this review, we provide an analysis of intraoperative gamma camera development over the past decade. The designs and performance of 17 imaging systems are compared in depth. We discuss where recent technological developments have had the greatest impact, identify emerging technological and scientific requirements, and predict future research directions. This is a comprehensive review of the current and emerging state-of-the-art as more devices enter clinical practice.

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Section: Continuous Scintillatorsmentioning

confidence: 99%

Intraoperative Gamma Cameras: A Review of Development in the Last Decade and Future Outlook

Farnworth

Bugby

2023

J. Imaging

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“…From the simplest center of gravity algorithms [44,45] to the sophisticated solid angle based models [17,19,25,46] there exist many analytical light-yield models available in the literature for the position reconstruction of a γ-ray interaction in a monolithic PSD. In this work, we have selected and compared a few of them.…”

Section: Light Yield Models For γ-Ray Interaction Position Reconstruc...mentioning

confidence: 99%

Machine Learning aided 3D-position reconstruction in large LaCl$_{3}$ crystals

Balibrea-Correa,

Lerendegui-Marco,

Babiano

et al. 2020

Preprint

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We investigate five different models to reconstruct the 3D γ-ray hit coordinates in five large LaCl 3 (Ce) monolithic crystals optically coupled to pixelated silicon photomultipliers. These scintillators have a base surface of 50 × 50 mm 2 and five different thicknesses, from 10 mm to 30 mm. Four of these models are analytical prescriptions and one is based on a Convolutional Neural Network. Average resolutions close to 1-2 mm fwhm are obtained in the transverse crystal plane for crystal thicknesses between 10 mm and 20 mm using analytical models. For thicker crystals average resolutions of about 3-5 mm fwhm are obtained. Depth of interaction resolutions between 1 mm and 4 mm are achieved depending on the distance of the interaction point to the photosensor surface. We propose a Machine Learning algorithm to correct for linearity distortions and pin-cushion effects. The latter allows one to keep a large field of view of about 70-80% of the crystal surface, regardless of crystal thickness. This work is aimed at optimizing the performance of the so-called Total Energy Detector with Compton imaging capability (i-TED) for time-of-flight neutron capture cross-section measurements.

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