Prototype time-of-flight PET utilizing capacitive multiplexing readout method

Choe, Hyeokjun; Choi, Yong; Kwak, Dong Jin; Lee, Junyung

doi:10.1016/j.nima.2018.12.030

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…H.-j. Choe et al also showed their results that all 64 crystals of an 8×8 SiPM array were clearly resolved in the flood image with the extended 64:4 capacitive multiplexing circuit [19].…”

Section: Decoded 2d Position Histogrammentioning

confidence: 92%

“…Therefore, the good timing and energy resolution performance of the Ce: GAGG-SiPM combination can be maintained. An extension of the current 16:4 capacitive multiplexing circuit has been developed for SiPM based TOF PET detectors, and 64 outputs of an 8×8 SiPM array were reduced to 4 position-weighted signals [19]. The energy (E) and position (X, Y) of a detection event are calculated as follows:…”

Section: Jinst 16 P01027mentioning

confidence: 99%

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A prototype of SiPM-based scintillator Compton camera with capacitive multiplexing readout

et al. 2021

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Compton camera is capable of visualizing the distribution of radioactivity based on the Compton scattering kinematics, and can be applied in nuclear accident emergency response, radioactivity decontamination, homeland security and etc. A prototype of Compton camera has been constructed consisting of two 4×4 SiPM-Ce: GAGG scintillator arrays. The signals of a SiPM array were converted into 4 position-weighted outputs with capacitive network circuit and collected by a CAEN digitizer. Two-dimensional flood images and energy responses of two detector modules were obtained. The average energy resolution of single elements of the two detector modules was 6.6% FWHM at 662 keV. Imaging performance of the prototype camera was evaluated with a 137 Cs point source and a 22 Na point source. Efficiency of the prototype for the 137 Cs point source located right in front was measured to be 0.09%. The angular resolution of a 137 Cs point source placed right in front of the camera was 7.2 • FWHM. Isotopic images of the two gamma-ray sources were obtained with spatial resolutions of 8.2 • FWHM for 137 Cs and 8.8 • FWHM for 22 Na.

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“…H.-j. Choe et al also showed their results that all 64 crystals of an 8×8 SiPM array were clearly resolved in the flood image with the extended 64:4 capacitive multiplexing circuit [19].…”

Section: Decoded 2d Position Histogrammentioning

confidence: 92%

Section: Jinst 16 P01027mentioning

confidence: 99%

A prototype of SiPM-based scintillator Compton camera with capacitive multiplexing readout

et al. 2021

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“…A brief comparison of different approaches that imply computation of histograms is shown in Table 1. It can be noted how, as previously introduced, histograms are involved in different fields: the top part of the table refers to solutions for time domain experiments ( [32]- [35]), while the lower part features applications in the field of computer vision and image processing ( [11], [12], [36]- [38]). The implementation trend results in FPGAs as the dominating technology and strictly follows the field of application, making the listed solutions not very suitable for an easy cross-domain utilization, but rather for operating in the environment they were created for in the first place.…”

Section: Trend Of Implementation Strategy and State-of-the-artmentioning

confidence: 99%

High-Performance Computing of Real-Time and Multichannel Histograms: A Full FPGA Approach

et al. 2022

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In a world heading towards applications, in science and industry, based on big data processing, the ability to elaborate streams of data is becoming more important every day. Applications of various natures, ranging from biology to chemistry, from medical imaging to spectroscopy, need systems able to detect, process and store huge amounts of data in real-time. In this context, techniques such as histogramming come into play. Histograms are able to represent data shapes and retrieve statistical information, favoring further processing. This kind of processing is usually done with the help of general purpose processors, relying on temporal computing, with their pros (simplicity and fast operating frequencies) and cons (inability to exploit parallel computation). Both Industry and Academia have, however, proposed many solutions to this need, delivering histogram generators both in full-custom Application-Specific Integrated Circuits (ASICs) and Field-Programmable Gate Array (FPGA) IP-Cores, preferred over processors thanks to their superior parallel computing power. In this work, we present a full FPGA approach to this issue, resulting in a high-performance IP-Core for generating and managing multiple histograms in real time, each supporting a data flow up to 224 MSps, with a strong focus on overall flexibility and area efficiency, using as low as < 250 LUTs and 300 FFs resources for a 16 bit-wide, 4096-bin histogram implementation. The IP-Core has been successfully integrated and validated in a high-performance time-mode application: an FPGA-based Time-to-Digital Converter. The resulting IP-Core is, more in general, a single solution perfectly adaptable to any field of application and FPGA device.INDEX TERMS Field-programmable gate array (FPGA), histograms, real-time systems, IP-Cores, throughput.

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Prototypes of SiPM-GAGG Scintillator Compton Cameras

Yan

2022

Advanced X-Ray Radiation Detection:

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Prototype time-of-flight PET utilizing capacitive multiplexing readout method

Cited by 8 publications

References 24 publications

A prototype of SiPM-based scintillator Compton camera with capacitive multiplexing readout

A prototype of SiPM-based scintillator Compton camera with capacitive multiplexing readout

High-Performance Computing of Real-Time and Multichannel Histograms: A Full FPGA Approach

Prototypes of SiPM-GAGG Scintillator Compton Cameras

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