Diagnostic approach of using an electron tracking compton gamma-ray camera based on small animal and phantom experiments

Diagnostic approach of using an electron tracking compton gamma-ray camera based on small animal and phantom experiments
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基于小动物和体模实验的电子跟踪康普顿伽马射线相机诊断方法

DOI:
10.1109/nssmic.2007.4436859
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发表时间:
2007
期刊:
2007 IEEE Nuclear Science Symposium Conference Record
影响因子:
--
通讯作者:
K. Ogawa
K. Ogawa
中科院分区:
--
文献类型:
--
作者:
S. Kabuki;K. Hattori;S. Kurosawa;K. Miuchi;T. Nagayoshi;H. Nishimura;Y. Okada;H. Sekiya;A. Takada;T. Tanimori;K. Ueno;H. Kawashima;H. Kimura;H. Saji;M. Ueda;R. Kohara;O. Miyasaki;T. Nakazawa;T. Shirahata;E. Yamamoto;A. Kubo;E. Kunieda;T. Nakahara;Y. Nakamoto;T. Okada;K. Togashi;K. Ogawa

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传统的康普顿照相机将γ射线的初始方向重建为圆。我们研制的康普顿γ射线照相机可以探测电子径迹。所以我们的相机可以将最初的伽马射线重建为电弧。使图像的噪声得到了很好的抑制。本文报道了三种电子跟踪照相机的实验结果。一种是10 x 10 x 10 cm<sup>3</sup>时间投影室(TPC)作为散射探测器,15 x 15 cm<sup>2</sup> GSO像素闪烁体阵列(PSA)作为吸收体。第二种是10 x 10 x 10 cm<sup>3</sup> TPC和10 x 10 cm 2 LaBr<sub>3</sub> PSA。<sub>LaBr3</sub>闪烁体的能量分辨率约为GSO闪烁体的2倍。第三个是30 x 30 x 15 cm<sup>3</sup> TPC和30 x 30 cm<sup>2</sup> GSO像素PSA。该系统的效率优于10立方厘米康普顿γ照相机。<sup></sup>
A conventional Compton camera reconstructs initial gamma-rays direction as circle. A Compton gamma-ray camera which we have developed can detect electron tracks. So our camera can reconstruct the initial gamma-rays as arc. It makes getting the low noise of image. In this paper, we report the results of three version of electron tracking camera. One is 10 x 10 x 10 cm<sup>3</sup> Time Projection Chamber (TPC) as a scatter detector and 15 x 15 cm<sup>2</sup> GSO pixel scintillator array (PSA) as an absorber. Second is a 10 x 10 x 10 cm<sup>3</sup> TPC and a 10 x 10 cm2 LaBr<sub>3</sub> PSA. The energy resolution of LaBr<sub>3</sub> scintillator is about 2 times better than GSO scintillator. Third is a 30 x 30 x 15 cm<sup>3</sup> TPC and a 30 x 30 cm<sup>2</sup> GSO pixel PSA. The efficiency of this system is better than 10 cm<sup>3</sup> cube Compton gammra-ray camera.
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