Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Raj Kumar Parajuli"'
Autor:
Megumi Ueno, Raj Kumar Parajuli, Hiromu Ito, Megumi Iiyama, Saaya Suzuki, Ken-ichiro Matsumoto, Ikuo Nakanishi, Ichio Aoki, Akira Sumiyoshi
Publikováno v:
Advances in Redox Research, Vol 8, Iss , Pp 100067- (2023)
The effects of X-ray irradiation on the redox status of colorectal tissues were investigated using magnetic resonance redox imaging.The pyrrolidine-ring nitroxyl contrast agent, 3-carbamoyl-2,2,5,5-tetramethylpyrrolidine-N-oxyl (CmP), was used as a s
Externí odkaz:
https://doaj.org/article/c91f96c187594713827e5ae9e7fcb325
Autor:
Raj Kumar Parajuli, Makoto Sakai, Kazuo Arakawa, Yoshiki Kubota, Nobuteru Kubo, Mutsumi Tashiro
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract Carbon ion radiotherapy is a sophisticated radiation treatment modality because of its superiority in achieving precise dosage distribution and high biological effectiveness. However, there exist beam range uncertainties that affect treatmen
Externí odkaz:
https://doaj.org/article/23bcaa0360df4118ad8956af5c4a622e
Publikováno v:
Sensors, Vol 22, Iss 19, p 7374 (2022)
The history of Compton cameras began with the detection of radiation sources originally for applications in astronomy. A Compton camera is a promising γ-ray detector that operates in the wide energy range of a few tens of keV to MeV. The γ-ray dete
Externí odkaz:
https://doaj.org/article/6a01d1833f1d4674a2bf03fed89e1720
Autor:
Shintaro Shiba, Raj Kumar Parajuli, Makoto Sakai, Takahiro Oike, Tatsuya Ohno, Takashi Nakano
Publikováno v:
Frontiers in Oncology, Vol 10 (2020)
The application of annihilation gamma-ray monitoring to the adaptive therapy of carbon ion radiotherapy (C-ion RT) requires identification of the peak intensity position and confirmation of activated elements with annihilation gamma-rays generated at
Externí odkaz:
https://doaj.org/article/ac5a3d9c9a4b46ec84572602e885529f
Autor:
Makoto Sakai, Raj Kumar Parajuli, Yoshiki Kubota, Nobuteru Kubo, Mikiko Kikuchi, Kazuo Arakawa, Takashi Nakano
Publikováno v:
PLoS ONE, Vol 15, Iss 3, p e0229366 (2020)
A Compton camera is a device for imaging a radio-source distribution without using a mechanical collimator. Ordered-subset expectation-maximization (OS-EM) is widely used to reconstruct Compton images. However, the OS-EM algorithm tends to over-conce
Externí odkaz:
https://doaj.org/article/2c8f4e636ce549f5bcce7b3e51b93cbe
Autor:
Megumi Ueno, Raj Kumar Parajuli, Hiromu Ito, Megumi Iiyama, Saaya Suzuki, Ken-ichiro Matsumoto, Ikuo Nakanishi, Ichio Aoki, Akira Sumiyoshi
Publikováno v:
Free Radical Biology and Medicine. 192:128-129
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2d519e1010bcd8e97a6f6446457c2fd
https://doi.org/10.1016/j.freeradbiomed.2022.10.238
https://doi.org/10.1016/j.freeradbiomed.2022.10.238
Autor:
Tomihiro Kamiya, Ivan Sudić, Kenta Miura, Naoto Yamada, Makoto Sakai, Masashi Koka, Shunsuke Kawabata, Wataru Kada, Suzuya Yamada, Takahiro Sekine, Milko Jakšić, Junichi Susaki, Natko Skukan, Takahiro Satoh, Osamu Hanaizumi, Raj Kumar Parajuli
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Two different types of SiAlON phosphors, namely, α-SiAlON:Eu and β-SiAlON:Eu, that have been developed as scintillators are evaluated for their luminescent properties by ion-beam-induced luminescence (IBIL) analysis under 2–3-MeV H+-microbeam irr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77bd02e271342c0ccc1d399bbd64fbe3
https://doi.org/10.1016/j.nimb.2018.09.002
https://doi.org/10.1016/j.nimb.2018.09.002
Autor:
Ivan, Sudić(RBI研), Natko, Skukan(RBI研), Raj, Kumar Parajuli(群馬大学), Milko, Jakšić (RBI研), Sato, Takahiro, Parajuli, Raj, Yamada, Naoto
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 450:157-162
Two different types of SiAlON phosphors, namely, α-SiAlON:Eu and β-SiAlON:Eu, that have been developed as scintillators are evaluated for their luminescent properties by ion-beam-induced luminescence (IBIL) analysis under 2–3-MeV H+-microbeam irr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::d2c68ea3b4f3d80825b777125fc08d56
https://repo.qst.go.jp/records/76219
https://repo.qst.go.jp/records/76219
Autor:
Kazuo Arakawa, Raj Kumar Parajuli, Makoto Sakai, Yoshiki Kubota, Mutsumi Tashiro, Naoki Kawachi, Nobuteru Kubo, Yuto Nagao, Mitsutaka Yamaguchi, Mikiko Kikuchi
Publikováno v:
Sensors (Basel, Switzerland)
Sensors
Volume 20
Issue 9
Sensors
Volume 20
Issue 9
Compton cameras can simultaneously detect multi-isotopes
however, when simultaneous imaging is performed, crosstalk artifacts appear on the images obtained using a low-energy window. In conventional single-photon emission computed tomography, a
however, when simultaneous imaging is performed, crosstalk artifacts appear on the images obtained using a low-energy window. In conventional single-photon emission computed tomography, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b168318ad6b00dbf22d2db9508871965
https://pubmed.ncbi.nlm.nih.gov/32357411
https://pubmed.ncbi.nlm.nih.gov/32357411
Autor:
Raj Kumar Parajuli, Mikiko Kikuchi, Naoki Kawachi, Kazuo Arakawa, Yuto Nagao, Takashi Nakano, Makoto Sakai, Mitsutaka Yamaguchi
Publikováno v:
Physica Medica. 56:1-9
Introduction We have been developing a medical imaging technique using a Compton camera, which is expected to reconstruct three-dimensional images. If the number of views is not sufficient, star-shaped artifacts (streak artifacts) could arise in cros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be36d4880e4b8c5daee4edc1d1acec61
https://repo.qst.go.jp/records/49337
https://repo.qst.go.jp/records/49337