A depth of interaction detector for PET with GSO crystals doped with different amount of Ce

Naoko Inadama; Hideo Murayama; Tomohide Omura; Takaji Yamashita; Seiichi Yamamoto; Hiroyuki Ishibashi; Hideyuki Kawai; Kenji Omi; Takaya Umehara; Takehiro Kasahara

A depth of interaction detector for PET with GSO crystals doped with different amount of Ce

Naoko Inadama^*, Hideo Murayama, Tomohide Omura, Takaji Yamashita, Seiichi Yamamoto, Hiroyuki Ishibashi, Hideyuki Kawai, Kenji Omi, Takaya Umehara, Takehiro Kasahara

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

Abstract

A new method for a 4-stage depth of interaction (DOI) detector was proposed. The 4-stage DOI detector is constructed with two kinds of Gd₂SiO₅:Ce (GSO) crystals doped with different amount Ce, 0.5mol% and 1.5mol%. The amount of Ce in GSO determines the scintillation decay time constant and it is 60ns for the 0.5mol% GSO and 35ns for 1.5mol% GSO. This difference led to introduce pulse shape discrimination, which would distinguish between two kinds event data from respective GSOs and sort them into two groups. By independently applying Anger-type position arithmetic to the data of each group, two 2-dimensional histograms are obtained. The crystal of interaction can be identified on these histograms in which only 0.5% or 1.5mol% GSO crystal elements are expressed. To evaluate this method, we constructed the 4-stage DOI detector by alternately stacking 1.5mol% GSO crystal stages and 0.5mol% stages. The result of ¹³⁷Cs gamma ray beam scanning measurement proved that the DOI detector had enough accuracy in crystal identification.

Original language	English
Pages	1099-1103
Number of pages	5
Publication status	Published - 2001
Externally published	Yes
Event	2001 IEEE Nuclear Science Symposium Conference Record - San Diege, CA, United States Duration: 2001 Nov 4 → 2001 Nov 10

Conference

Conference	2001 IEEE Nuclear Science Symposium Conference Record
Country/Territory	United States
City	San Diege, CA
Period	01/11/4 → 01/11/10

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging

Cite this

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title = "A depth of interaction detector for PET with GSO crystals doped with different amount of Ce",

abstract = "A new method for a 4-stage depth of interaction (DOI) detector was proposed. The 4-stage DOI detector is constructed with two kinds of Gd2SiO5:Ce (GSO) crystals doped with different amount Ce, 0.5mol% and 1.5mol%. The amount of Ce in GSO determines the scintillation decay time constant and it is 60ns for the 0.5mol% GSO and 35ns for 1.5mol% GSO. This difference led to introduce pulse shape discrimination, which would distinguish between two kinds event data from respective GSOs and sort them into two groups. By independently applying Anger-type position arithmetic to the data of each group, two 2-dimensional histograms are obtained. The crystal of interaction can be identified on these histograms in which only 0.5% or 1.5mol% GSO crystal elements are expressed. To evaluate this method, we constructed the 4-stage DOI detector by alternately stacking 1.5mol% GSO crystal stages and 0.5mol% stages. The result of 137Cs gamma ray beam scanning measurement proved that the DOI detector had enough accuracy in crystal identification.",

author = "Naoko Inadama and Hideo Murayama and Tomohide Omura and Takaji Yamashita and Seiichi Yamamoto and Hiroyuki Ishibashi and Hideyuki Kawai and Kenji Omi and Takaya Umehara and Takehiro Kasahara",

year = "2001",

language = "English",

pages = "1099--1103",

note = "2001 IEEE Nuclear Science Symposium Conference Record ; Conference date: 04-11-2001 Through 10-11-2001",

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T1 - A depth of interaction detector for PET with GSO crystals doped with different amount of Ce

AU - Inadama, Naoko

AU - Murayama, Hideo

AU - Omura, Tomohide

AU - Yamashita, Takaji

AU - Yamamoto, Seiichi

AU - Ishibashi, Hiroyuki

AU - Kawai, Hideyuki

AU - Omi, Kenji

AU - Umehara, Takaya

AU - Kasahara, Takehiro

PY - 2001

Y1 - 2001

N2 - A new method for a 4-stage depth of interaction (DOI) detector was proposed. The 4-stage DOI detector is constructed with two kinds of Gd2SiO5:Ce (GSO) crystals doped with different amount Ce, 0.5mol% and 1.5mol%. The amount of Ce in GSO determines the scintillation decay time constant and it is 60ns for the 0.5mol% GSO and 35ns for 1.5mol% GSO. This difference led to introduce pulse shape discrimination, which would distinguish between two kinds event data from respective GSOs and sort them into two groups. By independently applying Anger-type position arithmetic to the data of each group, two 2-dimensional histograms are obtained. The crystal of interaction can be identified on these histograms in which only 0.5% or 1.5mol% GSO crystal elements are expressed. To evaluate this method, we constructed the 4-stage DOI detector by alternately stacking 1.5mol% GSO crystal stages and 0.5mol% stages. The result of 137Cs gamma ray beam scanning measurement proved that the DOI detector had enough accuracy in crystal identification.

AB - A new method for a 4-stage depth of interaction (DOI) detector was proposed. The 4-stage DOI detector is constructed with two kinds of Gd2SiO5:Ce (GSO) crystals doped with different amount Ce, 0.5mol% and 1.5mol%. The amount of Ce in GSO determines the scintillation decay time constant and it is 60ns for the 0.5mol% GSO and 35ns for 1.5mol% GSO. This difference led to introduce pulse shape discrimination, which would distinguish between two kinds event data from respective GSOs and sort them into two groups. By independently applying Anger-type position arithmetic to the data of each group, two 2-dimensional histograms are obtained. The crystal of interaction can be identified on these histograms in which only 0.5% or 1.5mol% GSO crystal elements are expressed. To evaluate this method, we constructed the 4-stage DOI detector by alternately stacking 1.5mol% GSO crystal stages and 0.5mol% stages. The result of 137Cs gamma ray beam scanning measurement proved that the DOI detector had enough accuracy in crystal identification.

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M3 - Paper

AN - SCOPUS:0035552777

SP - 1099

EP - 1103

T2 - 2001 IEEE Nuclear Science Symposium Conference Record

Y2 - 4 November 2001 through 10 November 2001

ER -

A depth of interaction detector for PET with GSO crystals doped with different amount of Ce

Abstract

Conference

ASJC Scopus subject areas

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