Pulse timing in edge-readout PET detectors

Xin Li; Maria Ruiz-Gonzalez; Lars R Furenlid

doi:10.1117/12.2279228

Pulse timing in edge-readout PET detectors

Xin Li, Maria Ruiz-Gonzalez, Lars R Furenlid

Medical Imaging

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We have proposed a novel edge-readout detector design for PET, which can easily provide sub-millimeter in-plane spatial resolution together with DOI information with resolution determined by the thickness of the crystal layers. Multiple factors that can potentially affect the coincidence resolving time (CRT) have been studied in this work. The result indicates there is a strong correlation between the coincidence resolving time and the parameters of a constant fraction discriminator (CFD), while the correlation between CRT and other factors such as inclusion of optical barriers, locations of gamma-ray interactions in the detector and light-coupling material's refractive index (between crystal and SiPM's silicon substrate) is weak. With optimum CFD parameters, a 200-ps CTR can be achieved.

Original language	English (US)
Title of host publication	Radiation Detectors in Medicine, Industry, and National Security XVIII
Publisher	SPIE
Volume	10393
ISBN (Electronic)	9781510612433
DOIs	https://doi.org/10.1117/12.2279228
State	Published - Jan 1 2017
Event	Radiation Detectors in Medicine, Industry, and National Security XVIII 2017 - San Diego, United States Duration: Aug 9 2017 → Aug 10 2017

Other

Other	Radiation Detectors in Medicine, Industry, and National Security XVIII 2017
Country	United States
City	San Diego
Period	8/9/17 → 8/10/17

Keywords

coincidence resolving time
PET
side-readout

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2279228

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Cite this

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title = "Pulse timing in edge-readout PET detectors",

abstract = "We have proposed a novel edge-readout detector design for PET, which can easily provide sub-millimeter in-plane spatial resolution together with DOI information with resolution determined by the thickness of the crystal layers. Multiple factors that can potentially affect the coincidence resolving time (CRT) have been studied in this work. The result indicates there is a strong correlation between the coincidence resolving time and the parameters of a constant fraction discriminator (CFD), while the correlation between CRT and other factors such as inclusion of optical barriers, locations of gamma-ray interactions in the detector and light-coupling material's refractive index (between crystal and SiPM's silicon substrate) is weak. With optimum CFD parameters, a 200-ps CTR can be achieved.",

keywords = "coincidence resolving time, PET, side-readout",

author = "Xin Li and Maria Ruiz-Gonzalez and Furenlid, {Lars R}",

year = "2017",

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doi = "10.1117/12.2279228",

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volume = "10393",

booktitle = "Radiation Detectors in Medicine, Industry, and National Security XVIII",

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T1 - Pulse timing in edge-readout PET detectors

AU - Li, Xin

AU - Ruiz-Gonzalez, Maria

AU - Furenlid, Lars R

PY - 2017/1/1

Y1 - 2017/1/1

N2 - We have proposed a novel edge-readout detector design for PET, which can easily provide sub-millimeter in-plane spatial resolution together with DOI information with resolution determined by the thickness of the crystal layers. Multiple factors that can potentially affect the coincidence resolving time (CRT) have been studied in this work. The result indicates there is a strong correlation between the coincidence resolving time and the parameters of a constant fraction discriminator (CFD), while the correlation between CRT and other factors such as inclusion of optical barriers, locations of gamma-ray interactions in the detector and light-coupling material's refractive index (between crystal and SiPM's silicon substrate) is weak. With optimum CFD parameters, a 200-ps CTR can be achieved.

AB - We have proposed a novel edge-readout detector design for PET, which can easily provide sub-millimeter in-plane spatial resolution together with DOI information with resolution determined by the thickness of the crystal layers. Multiple factors that can potentially affect the coincidence resolving time (CRT) have been studied in this work. The result indicates there is a strong correlation between the coincidence resolving time and the parameters of a constant fraction discriminator (CFD), while the correlation between CRT and other factors such as inclusion of optical barriers, locations of gamma-ray interactions in the detector and light-coupling material's refractive index (between crystal and SiPM's silicon substrate) is weak. With optimum CFD parameters, a 200-ps CTR can be achieved.

KW - coincidence resolving time

KW - PET

KW - side-readout

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BT - Radiation Detectors in Medicine, Industry, and National Security XVIII

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