Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Kenta, Miwa"'
Autor:
Kei Wagatsuma, Muneyuki Sakata, Kenta Miwa, Yumi Hamano, Hirofumi Kawakami, Yuto Kamitaka, Tensho Yamao, Noriaki Miyaji, Kenji Ishibashi, Tetsuro Tago, Jun Toyohara, Kenji Ishii
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-16 (2024)
Abstract Purpose Bayesian penalised likelihood (BPL) reconstruction, which incorporates point-spread-function (PSF) correction, provides higher signal-to-noise ratios and more accurate quantitation than conventional ordered subset expectation maximiz
Externí odkaz:
https://doaj.org/article/a7bcf83c9f3d45dc93081246bd589657
Autor:
Tensho Yamao, Kenta Miwa, Yuta Kaneko, Noriyuki Takahashi, Noriaki Miyaji, Koki Hasegawa, Kei Wagatsuma, Yuto Kamitaka, Hiroshi Ito, Hiroshi Matsuda
Publikováno v:
Brain Sciences, Vol 14, Iss 4, p 406 (2024)
Background: Standard methods for deriving Centiloid scales from amyloid PET images are time-consuming and require considerable expert knowledge. We aimed to develop a deep learning method of automating Centiloid scale calculations from amyloid PET im
Externí odkaz:
https://doaj.org/article/28edc846c63743b0a868be4707612fe2
Autor:
Kenta Miwa, Tokiya Yoshii, Kei Wagatsuma, Shogo Nezu, Yuto Kamitaka, Tensho Yamao, Rinya Kobayashi, Shohei Fukuda, Yu Yakushiji, Noriaki Miyaji, Kenji Ishii
Publikováno v:
EJNMMI Physics, Vol 10, Iss 1, Pp 1-12 (2023)
Abstract Background The Bayesian penalized likelihood PET reconstruction (BPL) algorithm, Q.Clear (GE Healthcare), has recently been clinically applied to clinical image reconstruction. The BPL includes a relative difference penalty (RDP) as a penalt
Externí odkaz:
https://doaj.org/article/d1d8252c65884dacbcfc88f09e67ffc1
Autor:
Hajime Ichikawa, Toyohiro Kato, Kenta Miwa, Takayuki Shibutani, Koichi Okuda, Akio Nagaki, Hiroyuki Tsushima, Masahisa Onoguchi
Publikováno v:
Asia Oceania Journal of Nuclear Medicine and Biology, Vol 9, Iss 2, Pp 158-166 (2021)
Objectives: Combined positron emission tomography/computed tomography (PET/CT) has gradually advanced with the introduction of newly developed techniques. However, the recent status of imaging techniques (e.g., scanning range, availability of correct
Externí odkaz:
https://doaj.org/article/ab239197b6204499938168996b39479e
Autor:
Makito Suga, Ryuichi Nishii, Kenta Miwa, Yuto Kamitaka, Kana Yamazaki, Kentaro Tamura, Naoyoshi Yamamoto, Ryosuke Kohno, Masato Kobayashi, Katsuyuki Tanimoto, Hiroshi Tsuji, Tatsuya Higashi
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract The differentiation of non-small cell lung cancer (NSCLC) and radiation pneumonitis (RP) is critically essential for selecting optimal clinical therapeutic strategies to manage post carbon-ion radiotherapy (CIRT) in patients with NSCLC. The
Externí odkaz:
https://doaj.org/article/a13deed6066f4c098068515e1d25d262
Autor:
Tokiya Yoshii, Kenta Miwa, Masashi Yamaguchi, Kai Shimada, Kei Wagatsuma, Tensho Yamao, Yuto Kamitaka, Seiya Hiratsuka, Rinya Kobayashi, Hajime Ichikawa, Noriaki Miyaji, Tsuyoshi Miyazaki, Kenji Ishii
Publikováno v:
EJNMMI Physics, Vol 7, Iss 1, Pp 1-14 (2020)
Abstract Background The Bayesian penalized likelihood (BPL) algorithm Q.Clear (GE Healthcare) allows fully convergent iterative reconstruction that results in better image quality and quantitative accuracy, while limiting image noise. The present stu
Externí odkaz:
https://doaj.org/article/62f1e81a2d584e62a8f21cb104de9f96
Autor:
Hajime Ichikawa, Kenta Miwa, Koichi Okuda, Takayuki Shibutani, Toyohiro Kato, Akio Nagaki, Hiroyuki Tsushima, Masahisa Onoguchi
Publikováno v:
Asia Oceania Journal of Nuclear Medicine and Biology, Vol 8, Iss 2, Pp 116-122 (2020)
Objective(s): Nuclear medicine technologists in Japan often perform additional single-photon emission computed tomography (SPECT) with or without computed tomography (CT) after whole-body imaging for bone scintigraphy. In this study, we wanted to ide
Externí odkaz:
https://doaj.org/article/55142f70f447438c8671e0230b5da451
Autor:
Noriaki Miyaji, Kenta Miwa, Ayaka Tokiwa, Hajime Ichikawa, Takashi Terauchi, Mitsuru Koizumi, Masahisa Onoguchi
Publikováno v:
EJNMMI Research, Vol 10, Iss 1, Pp 1-12 (2020)
Abstract Background Two novel methods of image reconstruction, xSPECT Quant (xQ) and xSPECT Bone (xB), that use an ordered subset conjugate gradient minimizer (OSCGM) for SPECT/CT reconstruction have been proposed. The present study compares the perf
Externí odkaz:
https://doaj.org/article/c0d7b8f364894692add598e147f5c5ff
Autor:
Kenta Miwa, Reo Nemoto, Hirotsugu Masuko, Tensho Yamao, Rinya Kobayashi, Noriaki Miyaji, Kosuke Inoue, Hiroya Onodera
Publikováno v:
PLoS ONE, Vol 17, Iss 6 (2022)
Although scatter correction improves SPECT image contrast and thus image quality, the effects of quantitation accuracy under various conditions remain unclear. The present study aimed to empirically define the conditions for the optimal scatter corre
Externí odkaz:
https://doaj.org/article/73405a721afe43e192669f2c29238d8f
Autor:
Win Thet Pe, Yoshiyuki Hosokai, Takashi Minagawa, Kenzo Muroi, Kenta Miwa, Ayaka Maruyama, Toshiya Yamaguchi, Kazuto Okano, Htwe Khin Moh Moh, Haruo Saito
Publikováno v:
Asia Oceania Journal of Nuclear Medicine and Biology, Vol 7, Iss 1, Pp 58-70 (2019)
Objective(s): Alternative normalization methods were proposed to solve the biased information of SPM in the study of neurodegenerative disease. The objective of this study was to determine the most suitable count normalization method for SPM analysis
Externí odkaz:
https://doaj.org/article/60e26666e1dc42deb1e4028c3574c49a