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2022-01-01

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/214176

HRFlexToT: A High Dynamic Range ASIC for Time-of-Flight Positron Emission Tomography

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https://doi.org/10.1109/TRPMS.2021.3066426

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Abstract: Time-of-Flight positron emission tomography scanners demand fast and efficient photo sensors and scintillators coupled to fast readout electronics. This article presents the high resolution flexible Time-over-Threshold (HRFlexToT), a 16-channel application-specific-integrated circuit for silicon photomultipliers (SiPM) anode readout manufactured using XFAB 0.18- μm CMOS technology. The main features of the HRFlexToT are a linear Time-over-Threshold with an extended dynamic range (10 bits) for energy measurement, low power consumption (≈ 3.5 mW/ch), and an excellent timing response. The experimental measurements show an energy linearity error of ≈ 3% and an energy resolution of about 12% at 511 keV. Single-photon time resolution measurements performed using an Fondazione Bruno Kessler (FBK) SiPM NUV-HD ( 4×4 mm2 pixel, 40- μm cell) and a Hamamatsu SiPM S13360-3050CS are around 142 and 167 ps full width at half maximum (FWHM), respectively. Coincidence time resolution (CTR) measurements with small cross-section pixelated crystals (LSO:Ce,Ca 0.4%, 2×2×5 mm3) coupled to the same Hamamatsu S13360-3050CS and FBK NUV-HD sensors yield a CTR of 117 ps and 119 ps, respectively. Measurements performed with a large cross-section monolithic crystal (LFS crystal measuring 25×25×20 mm3) and a Hamamatsu SiPM array S13361-6050NE-04 show a CTR of 324 ps FWHM after time-walk and time-skew correction.

Matèries

Tomografia per emissió de positrons, Fotoelectroquímica

Matèries (anglès)

Positron emission tomography, Photoelectrochemistry

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Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

Citació

SÁNCHEZ, David, et al. HRFlexToT: A High Dynamic Range ASIC for Time-of-Flight Positron Emission Tomography. IEEE Transactions on Radiation and Plasma Medical Sciences. 2022. Vol. 6, num. 1, pags. 51-67. ISSN 2469-7311. [consulted: 30 of June of 2026]. Available at: https://hdl.handle.net/2445/214176

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