New calibration and evaluation method for PET scanners using point-like radioactive sources

被引：0

作者：

Hasegawa, Tomoyuki ^{[1
]}

Oda, Keiichi ^{[2
]}

Sato, Yasushi ^{[3
]}

Wada, Yasuhiro ^{[4
]}

Yamada, Takahiro ^{[5
]}

Yoshida, Eiji ^{[6
]}

Murayama, Hideo ^{[6
]}

Saito, Kyoko ^{[7
]}

Takeda, Toru ^{[7
]}

Kikuchi, Kei ^{[8
]}

机构：

[1] Kitasato Univ, Sch Allied Hlth Sci, Minami Ku, Kitasato 1-15-1, Sagamihara, Kanagawa 2520373, Japan

[2] Tokyo Metropolitan Inst Gerontol, Ctr Med, Tokyo, Japan

[3] Adv Ind Sci & Technol, Ibaraki, Japan

[4] RIKEN Ctr Mol Imaging Sci, Hyogo, Japan

[5] Japan Radiolog Assoc, Tokyo, Japan

[6] Natl Inst Radiolog Sci, Chiba, Japan

[7] Kitasato Univ, Sch Allied Hlth Sci, Kanagawa, Japan

[8] Kitasato Univ Hosp, Div Radiol, Kanagawa, Japan

来源：

2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) | 2010年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Objective: In order to improve the convenience and reliability of the calibration procedure with respect to the quantitative aspects of PET scanners, we have been developing new methods that rely on the use of point-like radioactive sources. The aim of this study is to report the results of the application of the proposed method for obtaining the cross-calibration factors (CCFs) of a clinical PET scanner for the first time. Methods: A Na-22 point-like source was moved in the axial direction to cover the axial field-of-view (FOV) of a commercial PET scanner, SET-2400W (Shimadzu). From reconstructed images, saturated regions-of-interest (ROI) values were used to calculate the CCFs that were defined slice by slice. Results: It was possible to obtain CCFs that were practically equivalent to those obtained by the standard method with cylindrical water phantoms. The variations in the CCFs obtained over about a half-year were well reproduced by the proposed method. Conclusion: The proposed calibration method, which is based on the use of a point-like radioactive source, is useful for determining CCFs and their variations for a clinical PET scanner.

引用

页码：2929 / +

页数：2

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