Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Kouhei Nakanishi"'
In-vivo imaging of a mouse by detecting bremsstrahlung X-rays from 14C using a La-GPS imaging system
Autor:
Seiichi Yamamoto, Hideki Tomita, Ryohei Terabayashi, Kenji Yoshida, Kouhei Nakanishi, Takako Furukawa, Kei Kamada, Akira Yoshikawa
Publikováno v:
Journal of Nuclear Science and Technology. 59:1436-1447
Publikováno v:
2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC).
Publikováno v:
IEEE Transactions on Radiation and Plasma Medical Sciences. 3:371-376
Because the sensitivity of positron emission tomography (PET) system increases in proportion to the inverse of the diameter of the detector ring, brain PET systems are being planned and developed. However, count losses due to the dead-time of the det
Autor:
Kouhei Nakanishi, Seiichi Yamamoto
Publikováno v:
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 176
Positron emission tomography (PET) is a powerful tool because we can acquire functional information of tissue from the images with high sensitivity and relatively high spatial resolution. However, high-spatial-resolution PET imaging for high-energy p
Autor:
Jun Hatazawa, Kazuko Kaneda-Nakashima, Atsushi Shinohara, Akira Yoshikawa, Kei Kamada, Atsushi Toyoshima, Seiichi Yamamoto, Yoshifumi Shirakami, Kouhei Nakanishi, Tadashi Watabe, Kazuhiro Ooe, Takahiro Teramoto
Publikováno v:
Medical physicsREFERENCES. 47(11)
Purpose Astatine-211 (At-211) is a promising alpha emitter for radionuclide therapy. High-resolution in vivo imaging of At-211 in small animals is needed for the development of At-211 radiopharmaceuticals. For this purpose, we developed a low-energy
Autor:
Shinji Abe, Seiichi Yamamoto, Kouhei Nakanishi, Katsuhiko Kato, Hiroshi Watabe, Naotoshi Fujita
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 880:118-124
In clinical situations, various breast-dedicated positron emission tomography (PET) systems have been used. However, clinical breast-dedicated PET systems have polygonal detector ring. Polygonal detector ring sometimes causes image artifact, so compl
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 872:107-111
Although Lu-based scintillators, including Ce-doped Lu 1 . 8 Y 0 . 2 SiO 5 (LYSO) scintillators, are often used for positron emission tomography (PET) detectors, they are not commonly used in gamma cameras for single-photon emission computed tomograp
Autor:
Seiichi Yamamoto, Kouhei Nakanishi
Publikováno v:
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 160
For the imaging using low energy pure beta-emitting radionuclides, autoradiography is used by slicing the subjects because the range of beta particles is short and thought to be impossible to detect beta particles from outside the subjects. Contrary
Autor:
Seiichi Yamamoto, Takako Furukawa, Akira Yoshikawa, Kouhei Nakanishi, Kei Kamada, Hideki Tomita
Publikováno v:
Journal of Instrumentation. 15:P04006-P04006
Tritium (H-3) is a pure beta-emitting radionuclide and beta particles have extremely low energy (maximum energy: 18.6 keV). Thus the in-vivo imaging of H-3 is thought to be impossible. However, beta particles emit bremsstrahlung X-rays in subjects th
Publikováno v:
Topics in Catalysis. 57:960-966
Smooth, reversible and Markovnikov selective alkene insertion of ethyl acrylate, acrylonitrile, and ethylene to MHCp(CO)3 (M = Mo, W) or MnH(CO)5 has been catalyzed by Pd(PPh3)4 at 20 °C. Cis-selective insertion of acetylene and dimethyl acetylenedi