TY - JOUR
T1 - Development of Electron Tracking Compton Camera using micro pixel gas chamber for medical imaging
AU - Kabuki, Shigeto
AU - Hattori, Kaori
AU - Kohara, Ryota
AU - Kunieda, Etsuo
AU - Kubo, Atsushi
AU - Kubo, Hidetoshi
AU - Miuchi, Kentaro
AU - Nakahara, Tadaki
AU - Nagayoshi, Tsutomu
AU - Nishimura, Hironobu
AU - Okada, Yoko
AU - Orito, Reiko
AU - Sekiya, Hiroyuki
AU - Shirahata, Takashi
AU - Takada, Atsushi
AU - Tanimori, Toru
AU - Ueno, Kazuki
N1 - Funding Information:
This work was supported by a Grant-in-Aid in Scientific Research of the Japan Ministry of Education, Culture, Science, Sports and Technology, Health Labor Sciences Research Grant (Research on Advanced Medical Technology), SENTAN of Japan Science and Technology Agency, and a Grant-in-Aid for the 21st Century COE “Center for Diversity and Universality in Physics”.
PY - 2007/10/1
Y1 - 2007/10/1
N2 - We have developed the Electron Tracking Compton Camera (ETCC) with reconstructing the 3-D tracks of the scattered electron in Compton process for both sub-MeV and MeV gamma rays. By measuring both the directions and energies of not only the recoil gamma ray but also the scattered electron, the direction of the incident gamma ray is determined for each individual photon. Furthermore, a residual measured angle between the recoil electron and scattered gamma ray is quite powerful for the kinematical background rejection. For the 3-D tracking of the electrons, the Micro Time Projection Chamber (μ-TPC) was developed using a new type of the micro pattern gas detector. The ETCC consists of this μ-TPC (10×10×8 cm3) and the 6×6×13 mm3 GSO crystal pixel arrays with a flat panel photo-multiplier surrounding the μ-TPC for detecting recoil gamma rays. The ETCC provided the angular resolution of 6.6° (FWHM) at 364 keV of 131I. A mobile ETCC for medical imaging, which is fabricated in a 1 m cubic box, has been operated since October 2005. Here, we present the imaging results for the line sources and the phantom of human thyroid gland using 364 keV gamma rays of 131I.
AB - We have developed the Electron Tracking Compton Camera (ETCC) with reconstructing the 3-D tracks of the scattered electron in Compton process for both sub-MeV and MeV gamma rays. By measuring both the directions and energies of not only the recoil gamma ray but also the scattered electron, the direction of the incident gamma ray is determined for each individual photon. Furthermore, a residual measured angle between the recoil electron and scattered gamma ray is quite powerful for the kinematical background rejection. For the 3-D tracking of the electrons, the Micro Time Projection Chamber (μ-TPC) was developed using a new type of the micro pattern gas detector. The ETCC consists of this μ-TPC (10×10×8 cm3) and the 6×6×13 mm3 GSO crystal pixel arrays with a flat panel photo-multiplier surrounding the μ-TPC for detecting recoil gamma rays. The ETCC provided the angular resolution of 6.6° (FWHM) at 364 keV of 131I. A mobile ETCC for medical imaging, which is fabricated in a 1 m cubic box, has been operated since October 2005. Here, we present the imaging results for the line sources and the phantom of human thyroid gland using 364 keV gamma rays of 131I.
KW - Compton camera
KW - Micro pattern gaseous detector
KW - Nuclear medicine imaging
KW - TPC
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U2 - 10.1016/j.nima.2007.06.098
DO - 10.1016/j.nima.2007.06.098
M3 - Article
AN - SCOPUS:34548515997
SN - 0168-9002
VL - 580
SP - 1031
EP - 1035
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2
ER -