Traceable point-like 68Ge/68Ga source with a spherically symmetric positron absorber for PET scanners

被引：0
作者：
Tomoyuki Hasegawa
Mio Okamoto
Takahiro Yamada
Hidetake Ishizu
Takahiro Mikamoto
Yasushi Sato
Hiroki Miyatake
Kei Kikuchi
Yusuke Inoue
机构：
[1] Kitasato University,School of Allied Health Sciences
[2] Kitasato University,Graduate School of Medical Sciences
[3] Kindai University,Atomic Energy Research Institute
[4] Japan Radioisotope Association,Department of Radiology
[5] National Institute of Advanced Industrial Science and Technology,Department of Diagnostic Radiology
[6] Kitasato University Hospital,undefined
[7] Kitasato University School of Medicine,undefined
来源：
Radiological Physics and Technology | 2020年 / 13卷
关键词：
PET; Point-like source; Calibration; Quality control;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel traceable point-like 68Ge/68Ga source was developed for calibration of positron emission tomography (PET) scanners. The source was equipped with a spherically symmetric acrylic positron absorber. The physical characteristics of photons emitted from the point-like source were evaluated by Monte Carlo simulation, considering possible geometrical uncertainties. The calibration factor of a clinical PET/CT scanner was evaluated using four manufactured point-like sources as a practical application of the point-like source. The results were consistent with that determined by the conventional cross-calibration method. The traceable point-like 68Ge/68Ga source is expected to be a simple and practical tool for determining the calibration factor and evaluating the physical characteristics of PET scanners.
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页码：170 / 176
页数：6
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